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- <!-- JSON-LD Schema --> - <script type="application/ld+json"> +<!-- JSON-LD Schema --> +<script type="application/ld+json"> { "@context": "https://schema.org", "@type": "TechArticle", @@ -348,1127 +345,1105 @@ </script> </head> <body> - - <header class="page-header"> - <div class="container"> - <h1><i class="bi bi-vial"></i> Engineering Metals & Alloys Cheatsheet <small class="text-white-50" style="font-size: 0.6em;">Lab Edition</small></h1> - <p class="lead">A technical reference for comparing common engineering metals and alloys. Includes properties, applications, limitations, common equivalents, and typical forms to aid material selection.</p> - <p class="last-updated">Last Updated: May 28, 2025</p> - </div> - </header> - - <main class="container" id="main-container"> - - <div class="search-bar-container"> - <div class="input-group mb-3"> - <span class="input-group-text" id="search-addon"><i class="bi bi-search"></i></span> - <input type="text" class="form-control form-control-lg" id="searchInput" placeholder="Search metals, properties, equivalents, forms..." aria-label="Search metals" aria-describedby="search-addon"> - </div> - </div> - - <!-- Introductory Sections for Beginners --> - <section id="beginner-guides" class="intro-section"> - <h2 class="section-title" style="margin-top: 0; font-size: 1.5rem;"><i class="bi bi-book-half"></i> Beginner's Guide to Base Metals & Alloying</h2> - - <div class="accordion" id="beginnerAccordion"> - <div class="accordion-item"> - <h3 class="accordion-header" id="headingIronSteel"> - <button class="accordion-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseIronSteel" aria-expanded="false" aria-controls="collapseIronSteel"> +<header class="page-header"> +<div class="container"> +<h1><i class="bi bi-vial"></i> Engineering Metals & Alloys Cheatsheet <small class="text-white-50" style="font-size: 0.6em;">Lab Edition</small></h1> +<p class="lead">A technical reference for comparing common engineering metals and alloys. Includes properties, applications, limitations, common equivalents, and typical forms to aid material selection.</p> +<p class="last-updated">Last Updated: May 28, 2025</p> +</div> +</header> +<main class="container" id="main-container"> +<div class="search-bar-container"> +<div class="input-group mb-3"> +<span class="input-group-text" id="search-addon"><i class="bi bi-search"></i></span> +<input aria-describedby="search-addon" aria-label="Search metals" class="form-control form-control-lg" id="searchInput" placeholder="Search metals, properties, equivalents, forms..." type="text"/> +</div> +</div> +<!-- Introductory Sections for Beginners --> +<section class="intro-section" id="beginner-guides"> +<h2 class="section-title" style="margin-top: 0; font-size: 1.5rem;"><i class="bi bi-book-half"></i> Beginner's Guide to Base Metals & Alloying</h2> +<div class="accordion" id="beginnerAccordion"> +<div class="accordion-item"> +<h3 class="accordion-header" id="headingIronSteel"> +<button aria-controls="collapseIronSteel" aria-expanded="false" class="accordion-button collapsed" data-bs-target="#collapseIronSteel" data-bs-toggle="collapse" type="button"> Understanding Iron (Fe) and Steel </button> - </h3> - <div id="collapseIronSteel" class="accordion-collapse collapse" aria-labelledby="headingIronSteel" data-bs-parent="#beginnerAccordion"> - <div class="accordion-body"> - <p><strong>Iron (Fe)</strong> is a relatively soft, malleable, and ductile metal. It's strongly magnetic and rusts easily in moist air. Pure iron has limited engineering applications due to its low strength.</p> - <p><strong>Steel</strong> is an alloy of iron and carbon, typically with a carbon content between 0.2% and 2.1% by weight. Carbon is the primary hardening element. Steels offer a vast range of mechanical properties and are the most widely used metallic materials in construction and engineering.</p> - <h4>Common Alloying Elements in Steel and Their Effects:</h4> - <ul> - <li><span class="term">Carbon (C):</span> The most crucial alloying element. Increases hardness, tensile strength, and responsiveness to heat treatment. Decreases ductility and weldability.</li> - <li><span class="term">Manganese (Mn):</span> Increases strength, hardness, and hardenability. Acts as a deoxidizer and desulfurizer, improving hot workability.</li> - <li><span class="term">Chromium (Cr):</span> Increases hardness, toughness, and wear resistance. Crucially, it imparts corrosion resistance (essential for stainless steels, typically >10.5% Cr). Improves high-temperature strength.</li> - <li><span class="term">Nickel (Ni):</span> Increases strength, toughness (especially at low temperatures), and corrosion resistance. Important in austenitic stainless steels.</li> - <li><span class="term">Molybdenum (Mo):</span> Increases strength, hardness, hardenability, and toughness, especially at elevated temperatures (creep resistance). Enhances corrosion resistance, particularly against pitting in stainless steels.</li> - <li><span class="term">Silicon (Si):</span> Acts as a deoxidizer. Increases strength and hardness. In cast irons, promotes graphite formation.</li> - <li><span class="term">Vanadium (V):</span> Increases strength, toughness, and wear resistance. Promotes fine grain structure.</li> - </ul> - </div> - </div> - </div> - - <div class="accordion-item"> - <h3 class="accordion-header" id="headingAluminum"> - <button class="accordion-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseAluminum" aria-expanded="false" aria-controls="collapseAluminum"> +</h3> +<div aria-labelledby="headingIronSteel" class="accordion-collapse collapse" data-bs-parent="#beginnerAccordion" id="collapseIronSteel"> +<div class="accordion-body"> +<p><strong>Iron (Fe)</strong> is a relatively soft, malleable, and ductile metal. It's strongly magnetic and rusts easily in moist air. Pure iron has limited engineering applications due to its low strength.</p> +<p><strong>Steel</strong> is an alloy of iron and carbon, typically with a carbon content between 0.2% and 2.1% by weight. Carbon is the primary hardening element. Steels offer a vast range of mechanical properties and are the most widely used metallic materials in construction and engineering.</p> +<h4>Common Alloying Elements in Steel and Their Effects:</h4> +<ul> +<li><span class="term">Carbon (C):</span> The most crucial alloying element. Increases hardness, tensile strength, and responsiveness to heat treatment. Decreases ductility and weldability.</li> +<li><span class="term">Manganese (Mn):</span> Increases strength, hardness, and hardenability. Acts as a deoxidizer and desulfurizer, improving hot workability.</li> +<li><span class="term">Chromium (Cr):</span> Increases hardness, toughness, and wear resistance. Crucially, it imparts corrosion resistance (essential for stainless steels, typically >10.5% Cr). Improves high-temperature strength.</li> +<li><span class="term">Nickel (Ni):</span> Increases strength, toughness (especially at low temperatures), and corrosion resistance. Important in austenitic stainless steels.</li> +<li><span class="term">Molybdenum (Mo):</span> Increases strength, hardness, hardenability, and toughness, especially at elevated temperatures (creep resistance). Enhances corrosion resistance, particularly against pitting in stainless steels.</li> +<li><span class="term">Silicon (Si):</span> Acts as a deoxidizer. Increases strength and hardness. In cast irons, promotes graphite formation.</li> +<li><span class="term">Vanadium (V):</span> Increases strength, toughness, and wear resistance. Promotes fine grain structure.</li> +</ul> +</div> +</div> +</div> +<div class="accordion-item"> +<h3 class="accordion-header" id="headingAluminum"> +<button aria-controls="collapseAluminum" aria-expanded="false" class="accordion-button collapsed" data-bs-target="#collapseAluminum" data-bs-toggle="collapse" type="button"> Basics of Aluminum (Al) and Its Alloys </button> - </h3> - <div id="collapseAluminum" class="accordion-collapse collapse" aria-labelledby="headingAluminum" data-bs-parent="#beginnerAccordion"> - <div class="accordion-body"> - <p><strong>Aluminum (Al)</strong> is a lightweight, silvery-white, non-magnetic, and ductile metal. It has excellent corrosion resistance due to the formation of a passive oxide layer. It's a good thermal and electrical conductor. Pure aluminum is relatively soft and not very strong, so it's often alloyed.</p> - <h4>Common Alloying Elements in Aluminum and Their Effects:</h4> - <ul> - <li><span class="term">Silicon (Si):</span> Improves fluidity and reduces solidification shrinkage, making it excellent for casting alloys. Increases strength and hardness, and wear resistance.</li> - <li><span class="term">Copper (Cu):</span> Significantly increases strength and hardness, especially through heat treatment (precipitation hardening). Can reduce corrosion resistance and weldability.</li> - <li><span class="term">Magnesium (Mg):</span> Increases strength through solid solution strengthening and improves strain hardening ability. When combined with silicon (as Mg₂Si), allows for heat treatment (6xxx series alloys). Generally improves corrosion resistance.</li> - <li><span class="term">Manganese (Mn):</span> Increases strength somewhat through solution strengthening. Improves strain hardening and controls grain structure.</li> - <li><span class="term">Zinc (Zn):</span> When combined with magnesium (and sometimes copper), produces the highest strength heat-treatable aluminum alloys (7xxx series).</li> - <li><span class="term">Titanium (Ti):</span> Used as a grain refiner, improving mechanical properties and preventing cracking in castings and welds.</li> - </ul> - </div> - </div> - </div> - - <div class="accordion-item"> - <h3 class="accordion-header" id="headingTitanium"> - <button class="accordion-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseTitanium" aria-expanded="false" aria-controls="collapseTitanium"> +</h3> +<div aria-labelledby="headingAluminum" class="accordion-collapse collapse" data-bs-parent="#beginnerAccordion" id="collapseAluminum"> +<div class="accordion-body"> +<p><strong>Aluminum (Al)</strong> is a lightweight, silvery-white, non-magnetic, and ductile metal. It has excellent corrosion resistance due to the formation of a passive oxide layer. It's a good thermal and electrical conductor. Pure aluminum is relatively soft and not very strong, so it's often alloyed.</p> +<h4>Common Alloying Elements in Aluminum and Their Effects:</h4> +<ul> +<li><span class="term">Silicon (Si):</span> Improves fluidity and reduces solidification shrinkage, making it excellent for casting alloys. Increases strength and hardness, and wear resistance.</li> +<li><span class="term">Copper (Cu):</span> Significantly increases strength and hardness, especially through heat treatment (precipitation hardening). Can reduce corrosion resistance and weldability.</li> +<li><span class="term">Magnesium (Mg):</span> Increases strength through solid solution strengthening and improves strain hardening ability. When combined with silicon (as Mg₂Si), allows for heat treatment (6xxx series alloys). Generally improves corrosion resistance.</li> +<li><span class="term">Manganese (Mn):</span> Increases strength somewhat through solution strengthening. Improves strain hardening and controls grain structure.</li> +<li><span class="term">Zinc (Zn):</span> When combined with magnesium (and sometimes copper), produces the highest strength heat-treatable aluminum alloys (7xxx series).</li> +<li><span class="term">Titanium (Ti):</span> Used as a grain refiner, improving mechanical properties and preventing cracking in castings and welds.</li> +</ul> +</div> +</div> +</div> +<div class="accordion-item"> +<h3 class="accordion-header" id="headingTitanium"> +<button aria-controls="collapseTitanium" aria-expanded="false" class="accordion-button collapsed" data-bs-target="#collapseTitanium" data-bs-toggle="collapse" type="button"> Understanding Titanium (Ti) and Its Alloys </button> - </h3> - <div id="collapseTitanium" class="accordion-collapse collapse" aria-labelledby="headingTitanium" data-bs-parent="#beginnerAccordion"> - <div class="accordion-body"> - <p><strong>Titanium (Ti)</strong> is a strong, lightweight, corrosion-resistant metal with a silver color. It has a very high strength-to-density ratio. Its excellent corrosion resistance is due to a stable, protective oxide layer. Titanium exists in two main crystallographic forms (alpha and beta), which influences alloying behavior.</p> - <h4>Common Alloying Elements in Titanium and Their Effects:</h4> - <ul> - <li><span class="term">Aluminum (Al):</span> Primarily an alpha stabilizer. Increases strength (both at room and elevated temperatures) and lowers density. Too much Al can lead to embrittlement.</li> - <li><span class="term">Vanadium (V):</span> A beta stabilizer. Improves hardenability and strength. Ti-6Al-4V is the most common titanium alloy, where Vanadium contributes significantly to its heat treatability and strength.</li> - <li><span class="term">Molybdenum (Mo):</span> A strong beta stabilizer. Increases strength, hardenability, and high-temperature properties.</li> - <li><span class="term">Chromium (Cr):</span> A beta stabilizer. Similar effects to Molybdenum, enhances strength and hardenability.</li> - <li><span class="term">Iron (Fe):</span> A beta stabilizer. Can increase strength but may reduce ductility if present in high amounts or as undesirable phases.</li> - <li><span class="term">Oxygen (O), Nitrogen (N), Carbon (C):</span> Interstitial elements. Small amounts can significantly increase strength and hardness but drastically reduce ductility and toughness. Controlled additions are used in some CP (Commercially Pure) grades.</li> - </ul> - </div> - </div> - </div> - <div class="accordion-item"> - <h3 class="accordion-header" id="headingCopper"> - <button class="accordion-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseCopper" aria-expanded="false" aria-controls="collapseCopper"> +</h3> +<div aria-labelledby="headingTitanium" class="accordion-collapse collapse" data-bs-parent="#beginnerAccordion" id="collapseTitanium"> +<div class="accordion-body"> +<p><strong>Titanium (Ti)</strong> is a strong, lightweight, corrosion-resistant metal with a silver color. It has a very high strength-to-density ratio. Its excellent corrosion resistance is due to a stable, protective oxide layer. Titanium exists in two main crystallographic forms (alpha and beta), which influences alloying behavior.</p> +<h4>Common Alloying Elements in Titanium and Their Effects:</h4> +<ul> +<li><span class="term">Aluminum (Al):</span> Primarily an alpha stabilizer. Increases strength (both at room and elevated temperatures) and lowers density. Too much Al can lead to embrittlement.</li> +<li><span class="term">Vanadium (V):</span> A beta stabilizer. Improves hardenability and strength. Ti-6Al-4V is the most common titanium alloy, where Vanadium contributes significantly to its heat treatability and strength.</li> +<li><span class="term">Molybdenum (Mo):</span> A strong beta stabilizer. Increases strength, hardenability, and high-temperature properties.</li> +<li><span class="term">Chromium (Cr):</span> A beta stabilizer. Similar effects to Molybdenum, enhances strength and hardenability.</li> +<li><span class="term">Iron (Fe):</span> A beta stabilizer. Can increase strength but may reduce ductility if present in high amounts or as undesirable phases.</li> +<li><span class="term">Oxygen (O), Nitrogen (N), Carbon (C):</span> Interstitial elements. Small amounts can significantly increase strength and hardness but drastically reduce ductility and toughness. Controlled additions are used in some CP (Commercially Pure) grades.</li> +</ul> +</div> +</div> +</div> +<div class="accordion-item"> +<h3 class="accordion-header" id="headingCopper"> +<button aria-controls="collapseCopper" aria-expanded="false" class="accordion-button collapsed" data-bs-target="#collapseCopper" data-bs-toggle="collapse" type="button"> Basics of Copper (Cu) and Its Alloys (Brass, Bronze) </button> - </h3> - <div id="collapseCopper" class="accordion-collapse collapse" aria-labelledby="headingCopper" data-bs-parent="#beginnerAccordion"> - <div class="accordion-body"> - <p><strong>Copper (Cu)</strong> is a ductile metal with very high thermal and electrical conductivity. It's reddish-brown, relatively soft, and has good corrosion resistance in many environments. Pure copper is widely used for electrical wiring and plumbing.</p> - <p><strong>Brasses</strong> are primarily alloys of copper and zinc. <strong>Bronzes</strong> are primarily alloys of copper, usually with tin as the main additive, but the term is also used for alloys with other elements like aluminum or silicon.</p> - <h4>Common Alloying Elements in Copper and Their Effects:</h4> - <ul> - <li><span class="term">Zinc (Zn):</span> Forms <span class="term">Brass</span>. Increases strength, hardness, and ductility (up to ~35% Zn). Improves castability and machinability (especially with lead additions). Reduces cost compared to pure copper. Higher Zn content can decrease corrosion resistance (dezincification).</li> - <li><span class="term">Tin (Sn):</span> Forms <span class="term">Bronze</span>. Significantly increases strength, hardness, and wear resistance. Improves corrosion resistance. Reduces electrical conductivity more than zinc.</li> - <li><span class="term">Aluminum (Al):</span> Forms <span class="term">Aluminum Bronze</span>. Provides high strength, excellent corrosion resistance (especially in seawater), and good wear resistance.</li> - <li><span class="term">Silicon (Si):</span> Forms <span class="term">Silicon Bronze</span>. Increases strength and corrosion resistance. Improves castability and weldability.</li> - <li><span class="term">Nickel (Ni):</span> Forms <span class="term">Copper-Nickel alloys (Cupronickels)</span>. Greatly enhances corrosion resistance, especially in seawater and against biofouling. Improves strength at elevated temperatures.</li> - <li><span class="term">Lead (Pb):</span> Added to brasses and bronzes (typically up to ~3%) to significantly improve machinability by acting as a chip breaker. Reduces ductility and strength.</li> - <li><span class="term">Phosphorus (P):</span> Often used as a deoxidizer in copper alloys. Can increase strength and hardness but significantly reduces electrical conductivity.</li> - </ul> - </div> - </div> - </div> - <div class="accordion-item"> - <h3 class="accordion-header" id="headingNickel"> - <button class="accordion-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseNickel" aria-expanded="false" aria-controls="collapseNickel"> +</h3> +<div aria-labelledby="headingCopper" class="accordion-collapse collapse" data-bs-parent="#beginnerAccordion" id="collapseCopper"> +<div class="accordion-body"> +<p><strong>Copper (Cu)</strong> is a ductile metal with very high thermal and electrical conductivity. It's reddish-brown, relatively soft, and has good corrosion resistance in many environments. Pure copper is widely used for electrical wiring and plumbing.</p> +<p><strong>Brasses</strong> are primarily alloys of copper and zinc. <strong>Bronzes</strong> are primarily alloys of copper, usually with tin as the main additive, but the term is also used for alloys with other elements like aluminum or silicon.</p> +<h4>Common Alloying Elements in Copper and Their Effects:</h4> +<ul> +<li><span class="term">Zinc (Zn):</span> Forms <span class="term">Brass</span>. Increases strength, hardness, and ductility (up to ~35% Zn). Improves castability and machinability (especially with lead additions). Reduces cost compared to pure copper. Higher Zn content can decrease corrosion resistance (dezincification).</li> +<li><span class="term">Tin (Sn):</span> Forms <span class="term">Bronze</span>. Significantly increases strength, hardness, and wear resistance. Improves corrosion resistance. Reduces electrical conductivity more than zinc.</li> +<li><span class="term">Aluminum (Al):</span> Forms <span class="term">Aluminum Bronze</span>. Provides high strength, excellent corrosion resistance (especially in seawater), and good wear resistance.</li> +<li><span class="term">Silicon (Si):</span> Forms <span class="term">Silicon Bronze</span>. Increases strength and corrosion resistance. Improves castability and weldability.</li> +<li><span class="term">Nickel (Ni):</span> Forms <span class="term">Copper-Nickel alloys (Cupronickels)</span>. Greatly enhances corrosion resistance, especially in seawater and against biofouling. Improves strength at elevated temperatures.</li> +<li><span class="term">Lead (Pb):</span> Added to brasses and bronzes (typically up to ~3%) to significantly improve machinability by acting as a chip breaker. Reduces ductility and strength.</li> +<li><span class="term">Phosphorus (P):</span> Often used as a deoxidizer in copper alloys. Can increase strength and hardness but significantly reduces electrical conductivity.</li> +</ul> +</div> +</div> +</div> +<div class="accordion-item"> +<h3 class="accordion-header" id="headingNickel"> +<button aria-controls="collapseNickel" aria-expanded="false" class="accordion-button collapsed" data-bs-target="#collapseNickel" data-bs-toggle="collapse" type="button"> Understanding Nickel (Ni) and Its Alloys (Superalloys) </button> - </h3> - <div id="collapseNickel" class="accordion-collapse collapse" aria-labelledby="headingNickel" data-bs-parent="#beginnerAccordion"> - <div class="accordion-body"> - <p><strong>Nickel (Ni)</strong> is a silvery-white, hard, ductile, and ferromagnetic metal. It exhibits excellent corrosion resistance in many environments, especially alkaline solutions. Pure nickel is used for plating, coinage, and specialized chemical equipment.</p> - <p><strong>Nickel-based Superalloys</strong> are complex alloys designed for outstanding strength, creep resistance, and oxidation/corrosion resistance at very high temperatures (typically above 650°C / 1200°F). They are essential in gas turbines, jet engines, and other extreme environments.</p> - <h4>Common Alloying Elements in Nickel Alloys/Superalloys and Their Effects:</h4> - <ul> - <li><span class="term">Chromium (Cr):</span> Essential for high-temperature oxidation and corrosion resistance (forms a stable Cr₂O₃ protective scale). Contributes to solid solution strengthening. Key in alloys like Inconel.</li> - <li><span class="term">Molybdenum (Mo):</span> Provides significant solid solution strengthening. Enhances resistance to pitting and crevice corrosion. Important in alloys like Hastelloy.</li> - <li><span class="term">Cobalt (Co):</span> Can increase strength at high temperatures and improve creep resistance. Often used in conjunction with other elements.</li> - <li><span class="term">Aluminum (Al) & Titanium (Ti):</span> These are key precipitation hardening elements in many nickel superalloys. They form fine, coherent gamma prime (γ' - Ni₃(Al,Ti)) precipitates that dramatically increase high-temperature strength and creep resistance.</li> - <li><span class="term">Iron (Fe):</span> Can be a base element (e.g., Incoloy series) or an addition to nickel-based alloys to modify properties and reduce cost. Often improves weldability.</li> - <li><span class="term">Niobium (Nb) / Columbium (Cb) & Tantalum (Ta):</span> Form carbides and contribute to precipitation hardening (gamma double prime γ'' in Inconel 718). Improve creep strength and weldability in some alloys.</li> - <li><span class="term">Tungsten (W):</span> Potent solid solution strengthener at high temperatures. Increases creep resistance.</li> - <li><span class="term">Carbon (C):</span> Forms carbides with elements like Cr, Mo, Ti, Nb, W. Carbides can strengthen grain boundaries or contribute to wear resistance, but their morphology and location must be carefully controlled to avoid embrittlement.</li> - </ul> - </div> - </div> - </div> - </div> - </section> - - - <div id="metals-data-container"> - <!-- Carbon & Alloy Steels Section --> - <section id="carbon-alloy-steels" data-section-id="carbon-alloy-steels"> - <h2 class="section-title"><i class="bi bi-grid-1x2-fill"></i> Carbon & Alloy Steels</h2> - <div class="table-responsive"> - <table class="table table-bordered table-hover metal-table"> - <thead> - <tr> - <th>Material</th> - <th>Common Equivalents</th> - <th>Typical Forms</th> - <th>Yield (MPa)</th> - <th>Tensile (MPa)</th> - <th>Modulus (GPa)</th> - <th>Density (g/cm³)</th> - <th>Hardness</th> - <th>Cost Tier</th> - <th>Details</th> - </tr> - </thead> - <tbody> - <tr> - <td data-label="Material">A36 Carbon Steel</td> - <td data-label="Equivalents">UNS K02600, ASTM A36, EN S275JR</td> - <td data-label="Forms">Plate, Shapes (Beams, Angles, Channels), Bar</td> - <td data-label="Yield">250</td> - <td data-label="Tensile">400-550</td> - <td data-label="Modulus">200</td> - <td data-label="Density">7.85</td> - <td data-label="Hardness">~120-160 HB</td> - <td data-label="Cost Tier" class="cost-tier cost-tier-1">$</td> - <td> - <button class="btn btn-sm btn-outline-secondary details-toggle" type="button" data-bs-toggle="collapse" data-bs-target="#details-a36" aria-expanded="false" aria-controls="details-a36"> +</h3> +<div aria-labelledby="headingNickel" class="accordion-collapse collapse" data-bs-parent="#beginnerAccordion" id="collapseNickel"> +<div class="accordion-body"> +<p><strong>Nickel (Ni)</strong> is a silvery-white, hard, ductile, and ferromagnetic metal. It exhibits excellent corrosion resistance in many environments, especially alkaline solutions. Pure nickel is used for plating, coinage, and specialized chemical equipment.</p> +<p><strong>Nickel-based Superalloys</strong> are complex alloys designed for outstanding strength, creep resistance, and oxidation/corrosion resistance at very high temperatures (typically above 650°C / 1200°F). They are essential in gas turbines, jet engines, and other extreme environments.</p> +<h4>Common Alloying Elements in Nickel Alloys/Superalloys and Their Effects:</h4> +<ul> +<li><span class="term">Chromium (Cr):</span> Essential for high-temperature oxidation and corrosion resistance (forms a stable Cr₂O₃ protective scale). Contributes to solid solution strengthening. Key in alloys like Inconel.</li> +<li><span class="term">Molybdenum (Mo):</span> Provides significant solid solution strengthening. Enhances resistance to pitting and crevice corrosion. Important in alloys like Hastelloy.</li> +<li><span class="term">Cobalt (Co):</span> Can increase strength at high temperatures and improve creep resistance. Often used in conjunction with other elements.</li> +<li><span class="term">Aluminum (Al) & Titanium (Ti):</span> These are key precipitation hardening elements in many nickel superalloys. They form fine, coherent gamma prime (γ' - Ni₃(Al,Ti)) precipitates that dramatically increase high-temperature strength and creep resistance.</li> +<li><span class="term">Iron (Fe):</span> Can be a base element (e.g., Incoloy series) or an addition to nickel-based alloys to modify properties and reduce cost. Often improves weldability.</li> +<li><span class="term">Niobium (Nb) / Columbium (Cb) & Tantalum (Ta):</span> Form carbides and contribute to precipitation hardening (gamma double prime γ'' in Inconel 718). Improve creep strength and weldability in some alloys.</li> +<li><span class="term">Tungsten (W):</span> Potent solid solution strengthener at high temperatures. Increases creep resistance.</li> +<li><span class="term">Carbon (C):</span> Forms carbides with elements like Cr, Mo, Ti, Nb, W. Carbides can strengthen grain boundaries or contribute to wear resistance, but their morphology and location must be carefully controlled to avoid embrittlement.</li> +</ul> +</div> +</div> +</div> +</div> +</section> +<div id="metals-data-container"> +<!-- Carbon & Alloy Steels Section --> +<section data-section-id="carbon-alloy-steels" id="carbon-alloy-steels"> +<h2 class="section-title"><i class="bi bi-grid-1x2-fill"></i> Carbon & Alloy Steels</h2> +<div class="table-responsive"> +<table class="table table-bordered table-hover metal-table"> +<thead> +<tr> +<th>Material</th> +<th>Common Equivalents</th> +<th>Typical Forms</th> +<th>Yield (MPa)</th> +<th>Tensile (MPa)</th> +<th>Modulus (GPa)</th> +<th>Density (g/cm³)</th> +<th>Hardness</th> +<th>Cost Tier</th> +<th>Details</th> +</tr> +</thead> +<tbody> +<tr> +<td data-label="Material">A36 Carbon Steel</td> +<td data-label="Equivalents">UNS K02600, ASTM A36, EN S275JR</td> +<td data-label="Forms">Plate, Shapes (Beams, Angles, Channels), Bar</td> +<td data-label="Yield">250</td> +<td data-label="Tensile">400-550</td> +<td data-label="Modulus">200</td> +<td data-label="Density">7.85</td> +<td data-label="Hardness">~120-160 HB</td> +<td class="cost-tier cost-tier-1" data-label="Cost Tier">$</td> +<td> +<button aria-controls="details-a36" aria-expanded="false" class="btn btn-sm btn-outline-secondary details-toggle" data-bs-target="#details-a36" data-bs-toggle="collapse" type="button"> Info <i class="bi bi-chevron-down"></i> - </button> - <div class="collapse collapse-content" id="details-a36"> - <h6>Key Performance:</h6> - <ul> - <li><span class="term">Corrosion Resistance</span>: Poor without coating.</li> - <li><span class="term">Machinability</span>: Good.</li> - <li><span class="term">Weldability</span>: Excellent.</li> - </ul> - <h6>Primary Applications:</h6> - <p>Structural beams (high-rise, bridges), general fabrication, plates, machinery parts, low-stress components.</p> - <h6>Critical Limitations:</h6> - <p>Corrosion in marine/chemical environments without coating. Limited to ~400°C service temperature due to strength loss.</p> - <h6>Processing:</h6> - <p>Readily weldable by common methods, good machinability. Not typically heat-treated for strength (used as-rolled).</p> - </div> - </td> - </tr> - <tr> - <td data-label="Material">4140 Alloy Steel</td> - <td data-label="Equivalents">UNS G41400, AISI 4140, EN 42CrMo4 (1.7225)</td> - <td data-label="Forms">Bar, Rod, Forging, Tube, Plate</td> - <td data-label="Yield">415 (Ann) - 655+ (Q&T)</td> - <td data-label="Tensile">655 (Ann) - 1020+ (Q&T)</td> - <td data-label="Modulus">205</td> - <td data-label="Density">7.85</td> - <td data-label="Hardness">~197 HB (Ann), 28-34 HRC (Q&T)</td> - <td data-label="Cost Tier" class="cost-tier cost-tier-2">$$</td> - <td> - <button class="btn btn-sm btn-outline-secondary details-toggle" type="button" data-bs-toggle="collapse" data-bs-target="#details-4140" aria-expanded="false" aria-controls="details-4140"> +</button> +<div class="collapse collapse-content" id="details-a36"> +<h6>Key Performance:</h6> +<ul> +<li><span class="term">Corrosion Resistance</span>: Poor without coating.</li> +<li><span class="term">Machinability</span>: Good.</li> +<li><span class="term">Weldability</span>: Excellent.</li> +</ul> +<h6>Primary Applications:</h6> +<p>Structural beams (high-rise, bridges), general fabrication, plates, machinery parts, low-stress components.</p> +<h6>Critical Limitations:</h6> +<p>Corrosion in marine/chemical environments without coating. Limited to ~400°C service temperature due to strength loss.</p> +<h6>Processing:</h6> +<p>Readily weldable by common methods, good machinability. Not typically heat-treated for strength (used as-rolled).</p> +</div> +</td> +</tr> +<tr> +<td data-label="Material">4140 Alloy Steel</td> +<td data-label="Equivalents">UNS G41400, AISI 4140, EN 42CrMo4 (1.7225)</td> +<td data-label="Forms">Bar, Rod, Forging, Tube, Plate</td> +<td data-label="Yield">415 (Ann) - 655+ (Q&T)</td> +<td data-label="Tensile">655 (Ann) - 1020+ (Q&T)</td> +<td data-label="Modulus">205</td> +<td data-label="Density">7.85</td> +<td data-label="Hardness">~197 HB (Ann), 28-34 HRC (Q&T)</td> +<td class="cost-tier cost-tier-2" data-label="Cost Tier">$$</td> +<td> +<button aria-controls="details-4140" aria-expanded="false" class="btn btn-sm btn-outline-secondary details-toggle" data-bs-target="#details-4140" data-bs-toggle="collapse" type="button"> Info <i class="bi bi-chevron-down"></i> - </button> - <div class="collapse collapse-content" id="details-4140"> - <h6>Key Performance:</h6> - <ul> - <li><span class="term">Corrosion Resistance</span>: Poor without plating/coating.</li> - <li><span class="term">Machinability</span>: Good in annealed state, fair when hardened.</li> - <li><span class="term">Weldability</span>: Fair, preheat/post-heat often required to prevent cracking.</li> - <li><span class="term">Hardenability</span>: Good, can be through-hardened in moderate sections.</li> - </ul> - <h6>Primary Applications:</h6> - <p>Automotive axles, crankshafts, medium-duty gears, bolts, couplings, spindles, tool holders.</p> - <h6>Critical Limitations:</h6> - <p>Requires proper heat treatment for optimal properties. Susceptible to temper embrittlement if not carefully processed. Not ideal for highly corrosive environments without protection.</p> - <h6>Processing:</h6> - <p>Responds well to heat treatment (quenching and tempering). Machinable. Weldable with pre/post heat treatment. Can be nitrided for surface hardness.</p> - </div> - </td> - </tr> - <tr> - <td data-label="Material">4340 Alloy Steel</td> - <td data-label="Equivalents">UNS G43400, AISI 4340, EN 34CrNiMo6 (1.6582)</td> - <td data-label="Forms">Bar, Rod, Forging, Plate, Tube</td> - <td data-label="Yield">470 (Ann) - 1515+ (Q&T)</td> - <td data-label="Tensile">745 (Ann) - 1895+ (Q&T)</td> - <td data-label="Modulus">205</td> - <td data-label="Density">7.85</td> - <td data-label="Hardness">~217 HB (Ann), 35-55 HRC (Q&T)</td> - <td data-label="Cost Tier" class="cost-tier cost-tier-3">$$$</td> - <td> - <button class="btn btn-sm btn-outline-secondary details-toggle" type="button" data-bs-toggle="collapse" data-bs-target="#details-4340" aria-expanded="false" aria-controls="details-4340"> +</button> +<div class="collapse collapse-content" id="details-4140"> +<h6>Key Performance:</h6> +<ul> +<li><span class="term">Corrosion Resistance</span>: Poor without plating/coating.</li> +<li><span class="term">Machinability</span>: Good in annealed state, fair when hardened.</li> +<li><span class="term">Weldability</span>: Fair, preheat/post-heat often required to prevent cracking.</li> +<li><span class="term">Hardenability</span>: Good, can be through-hardened in moderate sections.</li> +</ul> +<h6>Primary Applications:</h6> +<p>Automotive axles, crankshafts, medium-duty gears, bolts, couplings, spindles, tool holders.</p> +<h6>Critical Limitations:</h6> +<p>Requires proper heat treatment for optimal properties. Susceptible to temper embrittlement if not carefully processed. Not ideal for highly corrosive environments without protection.</p> +<h6>Processing:</h6> +<p>Responds well to heat treatment (quenching and tempering). Machinable. Weldable with pre/post heat treatment. Can be nitrided for surface hardness.</p> +</div> +</td> +</tr> +<tr> +<td data-label="Material">4340 Alloy Steel</td> +<td data-label="Equivalents">UNS G43400, AISI 4340, EN 34CrNiMo6 (1.6582)</td> +<td data-label="Forms">Bar, Rod, Forging, Plate, Tube</td> +<td data-label="Yield">470 (Ann) - 1515+ (Q&T)</td> +<td data-label="Tensile">745 (Ann) - 1895+ (Q&T)</td> +<td data-label="Modulus">205</td> +<td data-label="Density">7.85</td> +<td data-label="Hardness">~217 HB (Ann), 35-55 HRC (Q&T)</td> +<td class="cost-tier cost-tier-3" data-label="Cost Tier">$$$</td> +<td> +<button aria-controls="details-4340" aria-expanded="false" class="btn btn-sm btn-outline-secondary details-toggle" data-bs-target="#details-4340" data-bs-toggle="collapse" type="button"> Info <i class="bi bi-chevron-down"></i> - </button> - <div class="collapse collapse-content" id="details-4340"> - <h6>Key Performance:</h6> - <ul> - <li><span class="term">Corrosion Resistance</span>: Poor without plating/coating.</li> - <li><span class="term">Machinability</span>: Fair to good in annealed state, poor when fully hardened.</li> - <li><span class="term">Weldability</span>: Difficult, requires significant preheat, specific consumables, and post-weld stress relief to avoid cracking.</li> - <li><span class="term">Hardenability</span>: Excellent, deep hardening capabilities. High toughness.</li> - </ul> - <h6>Primary Applications:</h6> - <p>Aircraft landing gear, high-stress shafts and gears, military ordnance, connecting rods, structural parts requiring high strength and toughness.</p> - <h6>Critical Limitations:</h6> - <p>Notch-sensitive, requires careful design and heat treatment to avoid embrittlement. Prone to hydrogen embrittlement if improperly plated. Difficult to weld.</p> - <h6>Processing:</h6> - <p>Deep hardening. Requires specific heat treatments (austenitizing, quenching, tempering) for optimal properties. Weldable only with stringent procedures.</p> - </div> - </td> - </tr> - </tbody> - </table> - </div> - </section> - - <!-- Stainless Steels Section --> - <section id="stainless-steels" data-section-id="stainless-steels"> - <h2 class="section-title"><i class="bi bi-shield-check"></i> Stainless Steels</h2> - <div class="table-responsive"> - <table class="table table-bordered table-hover metal-table"> - <thead> - <tr> - <th>Material</th> - <th>Common Equivalents</th> - <th>Typical Forms</th> - <th>Yield (MPa)</th> - <th>Tensile (MPa)</th> - <th>Modulus (GPa)</th> - <th>Density (g/cm³)</th> - <th>Hardness</th> - <th>Cost Tier</th> - <th>Details</th> - </tr> - </thead> - <tbody> - <tr> - <td data-label="Material">304 SS (Austenitic)</td> - <td data-label="Equivalents">UNS S30400, AISI 304, EN 1.4301, JIS SUS304</td> - <td data-label="Forms">Sheet, Plate, Bar, Tube, Pipe, Wire, Fittings, Casting</td> - <td data-label="Yield">205-310</td> - <td data-label="Tensile">515-620</td> - <td data-label="Modulus">193-200</td> - <td data-label="Density">8.0</td> - <td data-label="Hardness">~85 HRB (Annealed)</td> - <td data-label="Cost Tier" class="cost-tier cost-tier-2">$$</td> - <td> - <button class="btn btn-sm btn-outline-secondary details-toggle" type="button" data-bs-toggle="collapse" data-bs-target="#details-304ss" aria-expanded="false" aria-controls="details-304ss"> +</button> +<div class="collapse collapse-content" id="details-4340"> +<h6>Key Performance:</h6> +<ul> +<li><span class="term">Corrosion Resistance</span>: Poor without plating/coating.</li> +<li><span class="term">Machinability</span>: Fair to good in annealed state, poor when fully hardened.</li> +<li><span class="term">Weldability</span>: Difficult, requires significant preheat, specific consumables, and post-weld stress relief to avoid cracking.</li> +<li><span class="term">Hardenability</span>: Excellent, deep hardening capabilities. High toughness.</li> +</ul> +<h6>Primary Applications:</h6> +<p>Aircraft landing gear, high-stress shafts and gears, military ordnance, connecting rods, structural parts requiring high strength and toughness.</p> +<h6>Critical Limitations:</h6> +<p>Notch-sensitive, requires careful design and heat treatment to avoid embrittlement. Prone to hydrogen embrittlement if improperly plated. Difficult to weld.</p> +<h6>Processing:</h6> +<p>Deep hardening. Requires specific heat treatments (austenitizing, quenching, tempering) for optimal properties. Weldable only with stringent procedures.</p> +</div> +</td> +</tr> +</tbody> +</table> +</div> +</section> +<!-- Stainless Steels Section --> +<section data-section-id="stainless-steels" id="stainless-steels"> +<h2 class="section-title"><i class="bi bi-shield-check"></i> Stainless Steels</h2> +<div class="table-responsive"> +<table class="table table-bordered table-hover metal-table"> +<thead> +<tr> +<th>Material</th> +<th>Common Equivalents</th> +<th>Typical Forms</th> +<th>Yield (MPa)</th> +<th>Tensile (MPa)</th> +<th>Modulus (GPa)</th> +<th>Density (g/cm³)</th> +<th>Hardness</th> +<th>Cost Tier</th> +<th>Details</th> +</tr> +</thead> +<tbody> +<tr> +<td data-label="Material">304 SS (Austenitic)</td> +<td data-label="Equivalents">UNS S30400, AISI 304, EN 1.4301, JIS SUS304</td> +<td data-label="Forms">Sheet, Plate, Bar, Tube, Pipe, Wire, Fittings, Casting</td> +<td data-label="Yield">205-310</td> +<td data-label="Tensile">515-620</td> +<td data-label="Modulus">193-200</td> +<td data-label="Density">8.0</td> +<td data-label="Hardness">~85 HRB (Annealed)</td> +<td class="cost-tier cost-tier-2" data-label="Cost Tier">$$</td> +<td> +<button aria-controls="details-304ss" aria-expanded="false" class="btn btn-sm btn-outline-secondary details-toggle" data-bs-target="#details-304ss" data-bs-toggle="collapse" type="button"> Info <i class="bi bi-chevron-down"></i> - </button> - <div class="collapse collapse-content" id="details-304ss"> - <h6>Key Performance:</h6> - <ul> - <li><span class="term">Corrosion Resistance</span>: Good in many atmospheric and mild chemical environments; susceptible to chlorides (pitting, crevice corrosion, SCC).</li> - <li><span class="term">Thermal Conductivity</span>: 16.2 W/m·K (Low).</li> - <li><span class="term">Electrical Conductivity</span>: ~2.4% IACS (Low).</li> - <li><span class="term">Machinability</span>: Poor (work hardening, gummy chips); use sharp tools, slow speeds, positive feeds, good coolant.</li> - <li><span class="term">Weldability</span>: Good by most fusion and resistance methods; susceptible to sensitization (loss of corrosion resistance at welds) if not low carbon (304L) or stabilized.</li> - </ul> - <h6>Primary Applications:</h6> - <p>Food processing equipment (tanks, piping), architectural trim, kitchen sinks, cutlery, brewery equipment, chemical tanks (mild service), exhaust systems.</p> - <h6>Critical Limitations:</h6> - <p>Chloride stress corrosion cracking (SCC) above ~60°C. Sensitization can reduce corrosion resistance at welds. Poor resistance to reducing acids.</p> - <h6>Processing:</h6> - <p>Non-hardenable by heat treatment. Strength increased by cold work. Excellent formability and ductility. Annealing restores ductility after cold work.</p> - </div> - </td> - </tr> - <tr> - <td data-label="Material">316 SS (Austenitic)</td> - <td data-label="Equivalents">UNS S31600, AISI 316, EN 1.4401/1.4436, JIS SUS316</td> - <td data-label="Forms">Sheet, Plate, Bar, Tube, Pipe, Wire, Fittings, Casting</td> - <td data-label="Yield">205-310</td> - <td data-label="Tensile">515-620</td> - <td data-label="Modulus">193-200</td> - <td data-label="Density">8.0</td> - <td data-label="Hardness">~85 HRB (Annealed)</td> - <td data-label="Cost Tier" class="cost-tier cost-tier-3">$$$</td> - <td> - <button class="btn btn-sm btn-outline-secondary details-toggle" type="button" data-bs-toggle="collapse" data-bs-target="#details-316ss" aria-expanded="false" aria-controls="details-316ss"> +</button> +<div class="collapse collapse-content" id="details-304ss"> +<h6>Key Performance:</h6> +<ul> +<li><span class="term">Corrosion Resistance</span>: Good in many atmospheric and mild chemical environments; susceptible to chlorides (pitting, crevice corrosion, SCC).</li> +<li><span class="term">Thermal Conductivity</span>: 16.2 W/m·K (Low).</li> +<li><span class="term">Electrical Conductivity</span>: ~2.4% IACS (Low).</li> +<li><span class="term">Machinability</span>: Poor (work hardening, gummy chips); use sharp tools, slow speeds, positive feeds, good coolant.</li> +<li><span class="term">Weldability</span>: Good by most fusion and resistance methods; susceptible to sensitization (loss of corrosion resistance at welds) if not low carbon (304L) or stabilized.</li> +</ul> +<h6>Primary Applications:</h6> +<p>Food processing equipment (tanks, piping), architectural trim, kitchen sinks, cutlery, brewery equipment, chemical tanks (mild service), exhaust systems.</p> +<h6>Critical Limitations:</h6> +<p>Chloride stress corrosion cracking (SCC) above ~60°C. Sensitization can reduce corrosion resistance at welds. Poor resistance to reducing acids.</p> +<h6>Processing:</h6> +<p>Non-hardenable by heat treatment. Strength increased by cold work. Excellent formability and ductility. Annealing restores ductility after cold work.</p> +</div> +</td> +</tr> +<tr> +<td data-label="Material">316 SS (Austenitic)</td> +<td data-label="Equivalents">UNS S31600, AISI 316, EN 1.4401/1.4436, JIS SUS316</td> +<td data-label="Forms">Sheet, Plate, Bar, Tube, Pipe, Wire, Fittings, Casting</td> +<td data-label="Yield">205-310</td> +<td data-label="Tensile">515-620</td> +<td data-label="Modulus">193-200</td> +<td data-label="Density">8.0</td> +<td data-label="Hardness">~85 HRB (Annealed)</td> +<td class="cost-tier cost-tier-3" data-label="Cost Tier">$$$</td> +<td> +<button aria-controls="details-316ss" aria-expanded="false" class="btn btn-sm btn-outline-secondary details-toggle" data-bs-target="#details-316ss" data-bs-toggle="collapse" type="button"> Info <i class="bi bi-chevron-down"></i> - </button> - <div class="collapse collapse-content" id="details-316ss"> - <h6>Key Performance:</h6> - <ul> - <li><span class="term">Corrosion Resistance</span>: Excellent, superior to 304 due to Molybdenum (resists pitting/crevice corrosion in chlorides and some acids).</li> - <li><span class="term">Thermal Conductivity</span>: 16.3 W/m·K (Low).</li> - <li><span class="term">Electrical Conductivity</span>: ~2.3% IACS (Low).</li> - <li><span class="term">Machinability</span>: Poor (work hardening), similar to 304, slightly more difficult.</li> - <li><span class="term">Weldability</span>: Good; 316L (low carbon) preferred to avoid sensitization and ensure intergranular corrosion resistance at welds.</li> - </ul> - <h6>Primary Applications:</h6> - <p>Marine hardware (boat fittings, propellers), pharmaceutical equipment, chemical processing (tanks, pipes for more aggressive media), food processing, medical implants, pulp & paper industry.</p> - <h6>Critical Limitations:</h6> - <p>Chloride SCC above ~60°C, though more resistant than 304. Galvanic corrosion with aluminum, carbon steel. More expensive than 304.</p> - <h6>Processing:</h6> - <p>Non-hardenable by heat treatment. Cold work increases strength. Good formability. Annealing restores ductility.</p> - </div> - </td> - </tr> - <tr> - <td data-label="Material">17-4 PH SS (Precipitation Hardening)</td> - <td data-label="Equivalents">UNS S17400, AISI 630, EN 1.4542</td> - <td data-label="Forms">Bar, Rod, Plate, Sheet, Wire, Forging, Casting</td> - <td data-label="Yield">720 (Sol. Ann.) - 1170-1310 (H900)</td> - <td data-label="Tensile">1000 (Sol. Ann.) - 1310-1450 (H900)</td> - <td data-label="Modulus">196</td> - <td data-label="Density">7.81</td> - <td data-label="Hardness">~35 HRC (Sol. Ann.), 38-45 HRC (H900)</td> - <td data-label="Cost Tier" class="cost-tier cost-tier-4">$$$$</td> - <td> - <button class="btn btn-sm btn-outline-secondary details-toggle" type="button" data-bs-toggle="collapse" data-bs-target="#details-174ph" aria-expanded="false" aria-controls="details-174ph"> +</button> +<div class="collapse collapse-content" id="details-316ss"> +<h6>Key Performance:</h6> +<ul> +<li><span class="term">Corrosion Resistance</span>: Excellent, superior to 304 due to Molybdenum (resists pitting/crevice corrosion in chlorides and some acids).</li> +<li><span class="term">Thermal Conductivity</span>: 16.3 W/m·K (Low).</li> +<li><span class="term">Electrical Conductivity</span>: ~2.3% IACS (Low).</li> +<li><span class="term">Machinability</span>: Poor (work hardening), similar to 304, slightly more difficult.</li> +<li><span class="term">Weldability</span>: Good; 316L (low carbon) preferred to avoid sensitization and ensure intergranular corrosion resistance at welds.</li> +</ul> +<h6>Primary Applications:</h6> +<p>Marine hardware (boat fittings, propellers), pharmaceutical equipment, chemical processing (tanks, pipes for more aggressive media), food processing, medical implants, pulp & paper industry.</p> +<h6>Critical Limitations:</h6> +<p>Chloride SCC above ~60°C, though more resistant than 304. Galvanic corrosion with aluminum, carbon steel. More expensive than 304.</p> +<h6>Processing:</h6> +<p>Non-hardenable by heat treatment. Cold work increases strength. Good formability. Annealing restores ductility.</p> +</div> +</td> +</tr> +<tr> +<td data-label="Material">17-4 PH SS (Precipitation Hardening)</td> +<td data-label="Equivalents">UNS S17400, AISI 630, EN 1.4542</td> +<td data-label="Forms">Bar, Rod, Plate, Sheet, Wire, Forging, Casting</td> +<td data-label="Yield">720 (Sol. Ann.) - 1170-1310 (H900)</td> +<td data-label="Tensile">1000 (Sol. Ann.) - 1310-1450 (H900)</td> +<td data-label="Modulus">196</td> +<td data-label="Density">7.81</td> +<td data-label="Hardness">~35 HRC (Sol. Ann.), 38-45 HRC (H900)</td> +<td class="cost-tier cost-tier-4" data-label="Cost Tier">$$$$</td> +<td> +<button aria-controls="details-174ph" aria-expanded="false" class="btn btn-sm btn-outline-secondary details-toggle" data-bs-target="#details-174ph" data-bs-toggle="collapse" type="button"> Info <i class="bi bi-chevron-down"></i> - </button> - <div class="collapse collapse-content" id="details-174ph"> - <h6>Key Performance:</h6> - <ul> - <li><span class="term">Corrosion Resistance</span>: Good, comparable to 304 in many media, but can vary with heat treat condition. Better than hardenable martensitic grades (e.g., 410).</li> - <li><span class="term">Thermal Conductivity</span>: 17.9 W/m·K (at 100°C for H900).</li> - <li><span class="term">Machinability</span>: Fair in annealed (Condition A) state, more difficult when aged/hardened.</li> - <li><span class="term">Weldability</span>: Good, usually welded in solution annealed condition, then aged. Pre-heating generally not required for thin sections.</li> - <li><span class="term">High Strength & Hardness:</span> Achieved through relatively simple, low-temperature aging treatment.</li> - </ul> - <h6>Primary Applications:</h6> - <p>Aerospace fasteners and structural components, valve components, pump shafts, gears, food processing equipment, nuclear reactor components.</p> - <h6>Critical Limitations:</h6> - <p>Loses toughness below approx. -30°C to -40°C in some heat treat conditions (e.g., H900). Optimum corrosion resistance achieved after aging. Not suitable for very high temperature service (strength drops above ~315°C / 600°F).</p> - <h6>Processing:</h6> - <p>Hardenable by precipitation aging heat treatment. Supplied in solution annealed (Condition A). Various aging treatments (e.g., H900, H1025, H1075, H1150) yield different balances of strength, toughness, and corrosion resistance.</p> - </div> - </td> - </tr> - </tbody> - </table> - </div> - </section> - - <!-- Aluminum Alloys Section --> - <section id="aluminum-alloys" data-section-id="aluminum-alloys"> - <h2 class="section-title"><i class="bi bi-feather"></i> Aluminum Alloys</h2> - <div class="table-responsive"> - <table class="table table-bordered table-hover metal-table"> - <thead> - <tr> - <th>Material</th> - <th>Common Equivalents</th> - <th>Typical Forms</th> - <th>Yield (MPa)</th> - <th>Tensile (MPa)</th> - <th>Modulus (GPa)</th> - <th>Density (g/cm³)</th> - <th>Hardness (HB)</th> - <th>Cost Tier</th> - <th>Details</th> - </tr> - </thead> - <tbody> - <tr> - <td data-label="Material">6061-T6</td> - <td data-label="Equivalents">UNS A96061, ISO AlMg1SiCu</td> - <td data-label="Forms">Sheet, Plate, Bar, Rod, Tube, Pipe, Extrusion, Wire, Forging</td> - <td data-label="Yield">276</td> - <td data-label="Tensile">310</td> - <td data-label="Modulus">68.9</td> - <td data-label="Density">2.70</td> - <td data-label="Hardness">95</td> - <td data-label="Cost Tier" class="cost-tier cost-tier-2">$$</td> - <td> - <button class="btn btn-sm btn-outline-secondary details-toggle" type="button" data-bs-toggle="collapse" data-bs-target="#details-6061t6" aria-expanded="false" aria-controls="details-6061t6"> +</button> +<div class="collapse collapse-content" id="details-174ph"> +<h6>Key Performance:</h6> +<ul> +<li><span class="term">Corrosion Resistance</span>: Good, comparable to 304 in many media, but can vary with heat treat condition. Better than hardenable martensitic grades (e.g., 410).</li> +<li><span class="term">Thermal Conductivity</span>: 17.9 W/m·K (at 100°C for H900).</li> +<li><span class="term">Machinability</span>: Fair in annealed (Condition A) state, more difficult when aged/hardened.</li> +<li><span class="term">Weldability</span>: Good, usually welded in solution annealed condition, then aged. Pre-heating generally not required for thin sections.</li> +<li><span class="term">High Strength & Hardness:</span> Achieved through relatively simple, low-temperature aging treatment.</li> +</ul> +<h6>Primary Applications:</h6> +<p>Aerospace fasteners and structural components, valve components, pump shafts, gears, food processing equipment, nuclear reactor components.</p> +<h6>Critical Limitations:</h6> +<p>Loses toughness below approx. -30°C to -40°C in some heat treat conditions (e.g., H900). Optimum corrosion resistance achieved after aging. Not suitable for very high temperature service (strength drops above ~315°C / 600°F).</p> +<h6>Processing:</h6> +<p>Hardenable by precipitation aging heat treatment. Supplied in solution annealed (Condition A). Various aging treatments (e.g., H900, H1025, H1075, H1150) yield different balances of strength, toughness, and corrosion resistance.</p> +</div> +</td> +</tr> +</tbody> +</table> +</div> +</section> +<!-- Aluminum Alloys Section --> +<section data-section-id="aluminum-alloys" id="aluminum-alloys"> +<h2 class="section-title"><i class="bi bi-feather"></i> Aluminum Alloys</h2> +<div class="table-responsive"> +<table class="table table-bordered table-hover metal-table"> +<thead> +<tr> +<th>Material</th> +<th>Common Equivalents</th> +<th>Typical Forms</th> +<th>Yield (MPa)</th> +<th>Tensile (MPa)</th> +<th>Modulus (GPa)</th> +<th>Density (g/cm³)</th> +<th>Hardness (HB)</th> +<th>Cost Tier</th> +<th>Details</th> +</tr> +</thead> +<tbody> +<tr> +<td data-label="Material">6061-T6</td> +<td data-label="Equivalents">UNS A96061, ISO AlMg1SiCu</td> +<td data-label="Forms">Sheet, Plate, Bar, Rod, Tube, Pipe, Extrusion, Wire, Forging</td> +<td data-label="Yield">276</td> +<td data-label="Tensile">310</td> +<td data-label="Modulus">68.9</td> +<td data-label="Density">2.70</td> +<td data-label="Hardness">95</td> +<td class="cost-tier cost-tier-2" data-label="Cost Tier">$$</td> +<td> +<button aria-controls="details-6061t6" aria-expanded="false" class="btn btn-sm btn-outline-secondary details-toggle" data-bs-target="#details-6061t6" data-bs-toggle="collapse" type="button"> Info <i class="bi bi-chevron-down"></i> - </button> - <div class="collapse collapse-content" id="details-6061t6"> - <h6>Key Performance:</h6> - <ul> - <li><span class="term">Corrosion Resistance</span>: Excellent.</li> - <li><span class="term">Thermal Conductivity</span>: 167 W/m·K (Good).</li> - <li><span class="term">Electrical Conductivity</span>: ~43% IACS.</li> - <li><span class="term">Machinability</span>: Good in T6 temper.</li> - <li><span class="term">Weldability</span>: Good (strength reduction in Heat Affected Zone - HAZ, often requires re-aging or used as-welded with lower strength).</li> - <li><span class="term">Formability:</span> Good in annealed (O) condition, fair in T4, limited in T6.</li> - </ul> - <h6>Primary Applications:</h6> - <p>Structural extrusions (window frames, architectural components), bicycle frames, automotive components (chassis parts, suspension), marine applications (small boats, fittings), piping, scuba tanks.</p> - <h6>Critical Limitations:</h6> - <p>Strength significantly reduced in weld zones unless post-weld heat treated (re-solutionize and age). Lower strength than 2xxx or 7xxx series. Not ideal for high fatigue applications without careful design.</p> - <h6>Processing:</h6> - <p>Age-hardenable (Mg₂Si precipitates). Excellent formability in annealed (O) condition. Easily extruded into complex shapes. T6 temper involves solution heat treating and artificial aging.</p> - </div> - </td> - </tr> - <tr> - <td data-label="Material">7075-T6</td> - <td data-label="Equivalents">UNS A97075, ISO AlZn5.5MgCu</td> - <td data-label="Forms">Sheet, Plate, Bar, Rod, Extrusion, Forging</td> - <td data-label="Yield">503</td> - <td data-label="Tensile">572</td> - <td data-label="Modulus">71.7</td> - <td data-label="Density">2.81</td> - <td data-label="Hardness">150</td> - <td data-label="Cost Tier" class="cost-tier cost-tier-3">$$$</td> - <td> - <button class="btn btn-sm btn-outline-secondary details-toggle" type="button" data-bs-toggle="collapse" data-bs-target="#details-7075t6" aria-expanded="false" aria-controls="details-7075t6"> +</button> +<div class="collapse collapse-content" id="details-6061t6"> +<h6>Key Performance:</h6> +<ul> +<li><span class="term">Corrosion Resistance</span>: Excellent.</li> +<li><span class="term">Thermal Conductivity</span>: 167 W/m·K (Good).</li> +<li><span class="term">Electrical Conductivity</span>: ~43% IACS.</li> +<li><span class="term">Machinability</span>: Good in T6 temper.</li> +<li><span class="term">Weldability</span>: Good (strength reduction in Heat Affected Zone - HAZ, often requires re-aging or used as-welded with lower strength).</li> +<li><span class="term">Formability:</span> Good in annealed (O) condition, fair in T4, limited in T6.</li> +</ul> +<h6>Primary Applications:</h6> +<p>Structural extrusions (window frames, architectural components), bicycle frames, automotive components (chassis parts, suspension), marine applications (small boats, fittings), piping, scuba tanks.</p> +<h6>Critical Limitations:</h6> +<p>Strength significantly reduced in weld zones unless post-weld heat treated (re-solutionize and age). Lower strength than 2xxx or 7xxx series. Not ideal for high fatigue applications without careful design.</p> +<h6>Processing:</h6> +<p>Age-hardenable (Mg₂Si precipitates). Excellent formability in annealed (O) condition. Easily extruded into complex shapes. T6 temper involves solution heat treating and artificial aging.</p> +</div> +</td> +</tr> +<tr> +<td data-label="Material">7075-T6</td> +<td data-label="Equivalents">UNS A97075, ISO AlZn5.5MgCu</td> +<td data-label="Forms">Sheet, Plate, Bar, Rod, Extrusion, Forging</td> +<td data-label="Yield">503</td> +<td data-label="Tensile">572</td> +<td data-label="Modulus">71.7</td> +<td data-label="Density">2.81</td> +<td data-label="Hardness">150</td> +<td class="cost-tier cost-tier-3" data-label="Cost Tier">$$$</td> +<td> +<button aria-controls="details-7075t6" aria-expanded="false" class="btn btn-sm btn-outline-secondary details-toggle" data-bs-target="#details-7075t6" data-bs-toggle="collapse" type="button"> Info <i class="bi bi-chevron-down"></i> - </button> - <div class="collapse collapse-content" id="details-7075t6"> - <h6>Key Performance:</h6> - <ul> - <li><span class="term">Corrosion Resistance</span>: Poor, especially to Stress Corrosion Cracking (SCC) in T6 temper. Requires coating/anodizing for most applications. T73/T76 tempers improve SCC resistance but reduce strength.</li> - <li><span class="term">Thermal Conductivity</span>: 130 W/m·K.</li> - <li><span class="term">Machinability</span>: Fair to good in T6 condition, produces small chips.</li> - <li><span class="term">Weldability</span>: Poor (prone to hot cracking), generally not recommended for fusion welding. Resistance welding is possible but limited.</li> - <li><span class="term">Strength-to-Weight Ratio:</span> Excellent.</li> - </ul> - <h6>Primary Applications:</h6> - <p>Aircraft structures (wing spars, fuselage frames), high-performance automotive components (connecting rods, gears), climbing gear, bicycle components, missile parts, firearm receivers.</p> - <h6>Critical Limitations:</h6> - <p>High susceptibility to SCC in T6 temper, especially in marine/humid environments. Strength degrades significantly above ~120-150°C sustained temperature. Poor weldability limits fabrication options.</p> - <h6>Processing:</h6> - <p>Age-hardenable (Zn, Mg, Cu precipitates). Limited formability in T6 condition; best formed in annealed (O) or W (solution treated) temper then aged. Overaging tempers (e.g., T73, T76) improve SCC resistance but reduce peak strength.</p> - </div> - </td> - </tr> - <tr> - <td data-label="Material">2024-T3/T4</td> - <td data-label="Equivalents">UNS A92024, ISO AlCu4Mg1</td> - <td data-label="Forms">Sheet, Plate, Bar, Rod, Extrusion, Wire</td> - <td data-label="Yield">324-345 (T3/T4)</td> - <td data-label="Tensile">469-483 (T3/T4)</td> - <td data-label="Modulus">73.1</td> - <td data-label="Density">2.78</td> - <td data-label="Hardness">120</td> - <td data-label="Cost Tier" class="cost-tier cost-tier-3">$$$</td> - <td> - <button class="btn btn-sm btn-outline-secondary details-toggle" type="button" data-bs-toggle="collapse" data-bs-target="#details-2024t3" aria-expanded="false" aria-controls="details-2024t3"> +</button> +<div class="collapse collapse-content" id="details-7075t6"> +<h6>Key Performance:</h6> +<ul> +<li><span class="term">Corrosion Resistance</span>: Poor, especially to Stress Corrosion Cracking (SCC) in T6 temper. Requires coating/anodizing for most applications. T73/T76 tempers improve SCC resistance but reduce strength.</li> +<li><span class="term">Thermal Conductivity</span>: 130 W/m·K.</li> +<li><span class="term">Machinability</span>: Fair to good in T6 condition, produces small chips.</li> +<li><span class="term">Weldability</span>: Poor (prone to hot cracking), generally not recommended for fusion welding. Resistance welding is possible but limited.</li> +<li><span class="term">Strength-to-Weight Ratio:</span> Excellent.</li> +</ul> +<h6>Primary Applications:</h6> +<p>Aircraft structures (wing spars, fuselage frames), high-performance automotive components (connecting rods, gears), climbing gear, bicycle components, missile parts, firearm receivers.</p> +<h6>Critical Limitations:</h6> +<p>High susceptibility to SCC in T6 temper, especially in marine/humid environments. Strength degrades significantly above ~120-150°C sustained temperature. Poor weldability limits fabrication options.</p> +<h6>Processing:</h6> +<p>Age-hardenable (Zn, Mg, Cu precipitates). Limited formability in T6 condition; best formed in annealed (O) or W (solution treated) temper then aged. Overaging tempers (e.g., T73, T76) improve SCC resistance but reduce peak strength.</p> +</div> +</td> +</tr> +<tr> +<td data-label="Material">2024-T3/T4</td> +<td data-label="Equivalents">UNS A92024, ISO AlCu4Mg1</td> +<td data-label="Forms">Sheet, Plate, Bar, Rod, Extrusion, Wire</td> +<td data-label="Yield">324-345 (T3/T4)</td> +<td data-label="Tensile">469-483 (T3/T4)</td> +<td data-label="Modulus">73.1</td> +<td data-label="Density">2.78</td> +<td data-label="Hardness">120</td> +<td class="cost-tier cost-tier-3" data-label="Cost Tier">$$$</td> +<td> +<button aria-controls="details-2024t3" aria-expanded="false" class="btn btn-sm btn-outline-secondary details-toggle" data-bs-target="#details-2024t3" data-bs-toggle="collapse" type="button"> Info <i class="bi bi-chevron-down"></i> - </button> - <div class="collapse collapse-content" id="details-2024t3"> - <h6>Key Performance:</h6> - <ul> - <li><span class="term">Corrosion Resistance</span>: Poor, requires coating/cladding (e.g., Alclad 2024 where a thin layer of pure aluminum is bonded to the surface) or anodizing for protection.</li> - <li><span class="term">Thermal Conductivity</span>: 121 W/m·K (T351).</li> - <li><span class="term">Machinability</span>: Good, especially in T3/T4 tempers.</li> - <li><span class="term">Weldability</span>: Poor (prone to hot cracking and reduced mechanical properties), not generally recommended for fusion welding. Resistance welding is possible.</li> - <li><span class="term">Fatigue Resistance:</span> Good, a key reason for its aerospace use.</li> - </ul> - <h6>Primary Applications:</h6> - <p>Aircraft fuselage and wing structures (skins, tension members), rivets, truck wheels, structural components requiring good fatigue resistance.</p> - <h6>Critical Limitations:</h6> - <p>Susceptible to SCC, especially in older tempers or when improperly heat treated. Fatigue notch sensitivity requires careful design. Strength degrades significantly above ~120-150°C.</p> - <h6>Processing:</h6> - <p>Age-hardenable (Cu, Mg precipitates). Good formability in annealed (O) condition, fair in T3/T4 (T3 is solution heat treated, cold worked, and naturally aged; T4 is solution heat treated and naturally aged). Natural aging occurs at room temperature after solution treatment.</p> - </div> - </td> - </tr> - </tbody> - </table> - </div> - </section> - - <!-- Titanium Alloys Section --> - <section id="titanium-alloys" data-section-id="titanium-alloys"> - <h2 class="section-title"><i class="bi bi-airplane-engines"></i> Titanium Alloys</h2> - <div class="table-responsive"> - <table class="table table-bordered table-hover metal-table"> - <thead> - <tr> - <th>Material</th> - <th>Common Equivalents</th> - <th>Typical Forms</th> - <th>Yield (MPa)</th> - <th>Tensile (MPa)</th> - <th>Modulus (GPa)</th> - <th>Density (g/cm³)</th> - <th>Hardness (HRC)</th> - <th>Cost Tier</th> - <th>Details</th> - </tr> - </thead> - <tbody> - <tr> - <td data-label="Material">Ti-6Al-4V (Grade 5)</td> - <td data-label="Equivalents">UNS R56400, ASTM B265/B348/B381, EN 3.7164/3.7165</td> - <td data-label="Forms">Bar, Rod, Sheet, Plate, Wire, Forging, Tube, Billet</td> - <td data-label="Yield">830-950 (Annealed)</td> - <td data-label="Tensile">900-1020 (Annealed)</td> - <td data-label="Modulus">110-114</td> - <td data-label="Density">4.43</td> - <td data-label="Hardness">~36 (Annealed)</td> - <td data-label="Cost Tier" class="cost-tier cost-tier-5">$$$$$</td> - <td> - <button class="btn btn-sm btn-outline-secondary details-toggle" type="button" data-bs-toggle="collapse" data-bs-target="#details-ti64" aria-expanded="false" aria-controls="details-ti64"> +</button> +<div class="collapse collapse-content" id="details-2024t3"> +<h6>Key Performance:</h6> +<ul> +<li><span class="term">Corrosion Resistance</span>: Poor, requires coating/cladding (e.g., Alclad 2024 where a thin layer of pure aluminum is bonded to the surface) or anodizing for protection.</li> +<li><span class="term">Thermal Conductivity</span>: 121 W/m·K (T351).</li> +<li><span class="term">Machinability</span>: Good, especially in T3/T4 tempers.</li> +<li><span class="term">Weldability</span>: Poor (prone to hot cracking and reduced mechanical properties), not generally recommended for fusion welding. Resistance welding is possible.</li> +<li><span class="term">Fatigue Resistance:</span> Good, a key reason for its aerospace use.</li> +</ul> +<h6>Primary Applications:</h6> +<p>Aircraft fuselage and wing structures (skins, tension members), rivets, truck wheels, structural components requiring good fatigue resistance.</p> +<h6>Critical Limitations:</h6> +<p>Susceptible to SCC, especially in older tempers or when improperly heat treated. Fatigue notch sensitivity requires careful design. Strength degrades significantly above ~120-150°C.</p> +<h6>Processing:</h6> +<p>Age-hardenable (Cu, Mg precipitates). Good formability in annealed (O) condition, fair in T3/T4 (T3 is solution heat treated, cold worked, and naturally aged; T4 is solution heat treated and naturally aged). Natural aging occurs at room temperature after solution treatment.</p> +</div> +</td> +</tr> +</tbody> +</table> +</div> +</section> +<!-- Titanium Alloys Section --> +<section data-section-id="titanium-alloys" id="titanium-alloys"> +<h2 class="section-title"><i class="bi bi-airplane-engines"></i> Titanium Alloys</h2> +<div class="table-responsive"> +<table class="table table-bordered table-hover metal-table"> +<thead> +<tr> +<th>Material</th> +<th>Common Equivalents</th> +<th>Typical Forms</th> +<th>Yield (MPa)</th> +<th>Tensile (MPa)</th> +<th>Modulus (GPa)</th> +<th>Density (g/cm³)</th> +<th>Hardness (HRC)</th> +<th>Cost Tier</th> +<th>Details</th> +</tr> +</thead> +<tbody> +<tr> +<td data-label="Material">Ti-6Al-4V (Grade 5)</td> +<td data-label="Equivalents">UNS R56400, ASTM B265/B348/B381, EN 3.7164/3.7165</td> +<td data-label="Forms">Bar, Rod, Sheet, Plate, Wire, Forging, Tube, Billet</td> +<td data-label="Yield">830-950 (Annealed)</td> +<td data-label="Tensile">900-1020 (Annealed)</td> +<td data-label="Modulus">110-114</td> +<td data-label="Density">4.43</td> +<td data-label="Hardness">~36 (Annealed)</td> +<td class="cost-tier cost-tier-5" data-label="Cost Tier">$$$$$</td> +<td> +<button aria-controls="details-ti64" aria-expanded="false" class="btn btn-sm btn-outline-secondary details-toggle" data-bs-target="#details-ti64" data-bs-toggle="collapse" type="button"> Info <i class="bi bi-chevron-down"></i> - </button> - <div class="collapse collapse-content" id="details-ti64"> - <h6>Key Performance:</h6> - <ul> - <li><span class="term">Corrosion Resistance</span>: Exceptional in many environments (seawater, chlorides, oxidizing acids) due to stable passive oxide layer.</li> - <li><span class="term">Thermal Conductivity</span>: 6.7 W/m·K (Very Low).</li> - <li><span class="term">Electrical Conductivity</span>: ~1% IACS (Very Low).</li> - <li><span class="term">Machinability</span>: Difficult (galling, work hardening, low thermal conductivity). Requires rigid setups, sharp tools (carbide or ceramic), slow speeds, high feed rates, copious specialized coolant.</li> - <li><span class="term">Weldability</span>: Good with proper inert gas shielding (argon or helium) to prevent oxygen/nitrogen contamination. Post-weld stress relief often needed.</li> - <li><span class="term">Strength-to-Weight Ratio</span>: Excellent, retains strength at moderately elevated temperatures (up to ~300-400°C).</li> - </ul> - <h6>Primary Applications:</h6> - <p>Jet engine components (blades, discs, casings), aerospace fasteners and structures (airframes), medical implants (hips, knees, dental), high-performance sports equipment, marine hardware, chemical processing equipment.</p> - <h6>Critical Limitations:</h6> - <p>Hydrogen embrittlement potential above ~200-300°C or from certain chemical exposures/processing. Galvanic corrosion issues when coupled with less noble metals (e.g., aluminum, steel) without isolation. High material and processing cost. Poor wear resistance without surface treatment.</p> - <h6>Processing:</h6> - <p>Heat treatable (solution treatment and aging - STA - can significantly increase strength). Requires inert atmosphere for welding and some heat treatments above ~500°C. Difficult to cast due to high reactivity. Forging and forming require careful temperature control.</p> - </div> - </td> - </tr> - <tr> - <td data-label="Material">CP Titanium Gr2 (Commercially Pure)</td> - <td data-label="Equivalents">UNS R50400, ASTM B265/B348, EN 3.7035</td> - <td data-label="Forms">Sheet, Plate, Bar, Rod, Tube, Pipe, Wire, Billet</td> - <td data-label="Yield">275-450</td> - <td data-label="Tensile">345-550</td> - <td data-label="Modulus">103</td> - <td data-label="Density">4.51</td> - <td data-label="Hardness">~82 HRB (~20 HRC equiv.)</td> - <td data-label="Cost Tier" class="cost-tier cost-tier-4">$$$$</td> - <td> - <button class="btn btn-sm btn-outline-secondary details-toggle" type="button" data-bs-toggle="collapse" data-bs-target="#details-cpti" aria-expanded="false" aria-controls="details-cpti"> +</button> +<div class="collapse collapse-content" id="details-ti64"> +<h6>Key Performance:</h6> +<ul> +<li><span class="term">Corrosion Resistance</span>: Exceptional in many environments (seawater, chlorides, oxidizing acids) due to stable passive oxide layer.</li> +<li><span class="term">Thermal Conductivity</span>: 6.7 W/m·K (Very Low).</li> +<li><span class="term">Electrical Conductivity</span>: ~1% IACS (Very Low).</li> +<li><span class="term">Machinability</span>: Difficult (galling, work hardening, low thermal conductivity). Requires rigid setups, sharp tools (carbide or ceramic), slow speeds, high feed rates, copious specialized coolant.</li> +<li><span class="term">Weldability</span>: Good with proper inert gas shielding (argon or helium) to prevent oxygen/nitrogen contamination. Post-weld stress relief often needed.</li> +<li><span class="term">Strength-to-Weight Ratio</span>: Excellent, retains strength at moderately elevated temperatures (up to ~300-400°C).</li> +</ul> +<h6>Primary Applications:</h6> +<p>Jet engine components (blades, discs, casings), aerospace fasteners and structures (airframes), medical implants (hips, knees, dental), high-performance sports equipment, marine hardware, chemical processing equipment.</p> +<h6>Critical Limitations:</h6> +<p>Hydrogen embrittlement potential above ~200-300°C or from certain chemical exposures/processing. Galvanic corrosion issues when coupled with less noble metals (e.g., aluminum, steel) without isolation. High material and processing cost. Poor wear resistance without surface treatment.</p> +<h6>Processing:</h6> +<p>Heat treatable (solution treatment and aging - STA - can significantly increase strength). Requires inert atmosphere for welding and some heat treatments above ~500°C. Difficult to cast due to high reactivity. Forging and forming require careful temperature control.</p> +</div> +</td> +</tr> +<tr> +<td data-label="Material">CP Titanium Gr2 (Commercially Pure)</td> +<td data-label="Equivalents">UNS R50400, ASTM B265/B348, EN 3.7035</td> +<td data-label="Forms">Sheet, Plate, Bar, Rod, Tube, Pipe, Wire, Billet</td> +<td data-label="Yield">275-450</td> +<td data-label="Tensile">345-550</td> +<td data-label="Modulus">103</td> +<td data-label="Density">4.51</td> +<td data-label="Hardness">~82 HRB (~20 HRC equiv.)</td> +<td class="cost-tier cost-tier-4" data-label="Cost Tier">$$$$</td> +<td> +<button aria-controls="details-cpti" aria-expanded="false" class="btn btn-sm btn-outline-secondary details-toggle" data-bs-target="#details-cpti" data-bs-toggle="collapse" type="button"> Info <i class="bi bi-chevron-down"></i> - </button> - <div class="collapse collapse-content" id="details-cpti"> - <h6>Key Performance:</h6> - <ul> - <li><span class="term">Corrosion Resistance</span>: Exceptional, especially in oxidizing media, chlorides, and seawater. Often better than Ti-6Al-4V in highly reducing environments.</li> - <li><span class="term">Thermal Conductivity</span>: 16 W/m·K (Low, but better than Ti-6Al-4V).</li> - <li><span class="term">Machinability</span>: Fair (better than Ti-6Al-4V but still challenging due to galling and work hardening).</li> - <li><span class="term">Weldability</span>: Excellent with inert gas shielding.</li> - <li><span class="term">Formability</span>: Good, best among titanium grades, especially at slightly elevated temperatures.</li> - <li><span class="term">Biocompatibility:</span> Excellent.</li> - </ul> - <h6>Primary Applications:</h6> - <p>Chemical processing equipment (heat exchangers, tanks, piping), marine hardware, desalination plants, biomedical devices (surgical instruments, some implants), airframe components (low stress, e.g., ducting), architectural applications.</p> - <h6>Critical Limitations:</h6> - <p>Lower strength than alloys like Ti-6Al-4V. Susceptible to crevice corrosion in some reducing acids without palladium addition (Gr 7/11). Risk of ignition in pure, high-pressure oxygen environments. Strength drops significantly above ~300°C.</p> - <h6>Processing:</h6> - <p>Not heat treatable for strength. Properties primarily controlled by cold work and annealing. Readily welded and formed. Stress relief annealing may be needed after significant cold work.</p> - </div> - </td> - </tr> - </tbody> - </table> - </div> - </section> - - <!-- Copper Alloys Section --> - <section id="copper-alloys" data-section-id="copper-alloys"> - <h2 class="section-title"><i class="bi bi-lightning-charge-fill"></i> Copper Alloys</h2> - <div class="table-responsive"> - <table class="table table-bordered table-hover metal-table"> - <thead> - <tr> - <th>Material</th> - <th>Common Equivalents</th> - <th>Typical Forms</th> - <th>Yield (MPa)</th> - <th>Tensile (MPa)</th> - <th>Modulus (GPa)</th> - <th>Density (g/cm³)</th> - <th>Hardness (HB)</th> - <th>Cost Tier</th> - <th>Details</th> - </tr> - </thead> - <tbody> - <tr> - <td data-label="Material">C11000 ETP Copper (Electrolytic Tough Pitch)</td> - <td data-label="Equivalents">UNS C11000, CW004A (EN)</td> - <td data-label="Forms">Sheet, Strip, Plate, Bar, Rod, Wire, Tube, Busbar</td> - <td data-label="Yield">69 (Ann) - 365 (Hard)</td> - <td data-label="Tensile">220 (Ann) - 380 (Hard)</td> - <td data-label="Modulus">115-117</td> - <td data-label="Density">8.94</td> - <td data-label="Hardness">40 (Ann) - 110 (Hard)</td> - <td data-label="Cost Tier" class="cost-tier cost-tier-3">$$$</td> - <td> - <button class="btn btn-sm btn-outline-secondary details-toggle" type="button" data-bs-toggle="collapse" data-bs-target="#details-c110" aria-expanded="false" aria-controls="details-c110"> +</button> +<div class="collapse collapse-content" id="details-cpti"> +<h6>Key Performance:</h6> +<ul> +<li><span class="term">Corrosion Resistance</span>: Exceptional, especially in oxidizing media, chlorides, and seawater. Often better than Ti-6Al-4V in highly reducing environments.</li> +<li><span class="term">Thermal Conductivity</span>: 16 W/m·K (Low, but better than Ti-6Al-4V).</li> +<li><span class="term">Machinability</span>: Fair (better than Ti-6Al-4V but still challenging due to galling and work hardening).</li> +<li><span class="term">Weldability</span>: Excellent with inert gas shielding.</li> +<li><span class="term">Formability</span>: Good, best among titanium grades, especially at slightly elevated temperatures.</li> +<li><span class="term">Biocompatibility:</span> Excellent.</li> +</ul> +<h6>Primary Applications:</h6> +<p>Chemical processing equipment (heat exchangers, tanks, piping), marine hardware, desalination plants, biomedical devices (surgical instruments, some implants), airframe components (low stress, e.g., ducting), architectural applications.</p> +<h6>Critical Limitations:</h6> +<p>Lower strength than alloys like Ti-6Al-4V. Susceptible to crevice corrosion in some reducing acids without palladium addition (Gr 7/11). Risk of ignition in pure, high-pressure oxygen environments. Strength drops significantly above ~300°C.</p> +<h6>Processing:</h6> +<p>Not heat treatable for strength. Properties primarily controlled by cold work and annealing. Readily welded and formed. Stress relief annealing may be needed after significant cold work.</p> +</div> +</td> +</tr> +</tbody> +</table> +</div> +</section> +<!-- Copper Alloys Section --> +<section data-section-id="copper-alloys" id="copper-alloys"> +<h2 class="section-title"><i class="bi bi-lightning-charge-fill"></i> Copper Alloys</h2> +<div class="table-responsive"> +<table class="table table-bordered table-hover metal-table"> +<thead> +<tr> +<th>Material</th> +<th>Common Equivalents</th> +<th>Typical Forms</th> +<th>Yield (MPa)</th> +<th>Tensile (MPa)</th> +<th>Modulus (GPa)</th> +<th>Density (g/cm³)</th> +<th>Hardness (HB)</th> +<th>Cost Tier</th> +<th>Details</th> +</tr> +</thead> +<tbody> +<tr> +<td data-label="Material">C11000 ETP Copper (Electrolytic Tough Pitch)</td> +<td data-label="Equivalents">UNS C11000, CW004A (EN)</td> +<td data-label="Forms">Sheet, Strip, Plate, Bar, Rod, Wire, Tube, Busbar</td> +<td data-label="Yield">69 (Ann) - 365 (Hard)</td> +<td data-label="Tensile">220 (Ann) - 380 (Hard)</td> +<td data-label="Modulus">115-117</td> +<td data-label="Density">8.94</td> +<td data-label="Hardness">40 (Ann) - 110 (Hard)</td> +<td class="cost-tier cost-tier-3" data-label="Cost Tier">$$$</td> +<td> +<button aria-controls="details-c110" aria-expanded="false" class="btn btn-sm btn-outline-secondary details-toggle" data-bs-target="#details-c110" data-bs-toggle="collapse" type="button"> Info <i class="bi bi-chevron-down"></i> - </button> - <div class="collapse collapse-content" id="details-c110"> - <h6>Key Performance:</h6> - <ul> - <li><span class="term">Electrical Conductivity</span>: 100-101% IACS (Excellent). Base for conductivity ratings.</li> - <li><span class="term">Thermal Conductivity</span>: 388-391 W/m·K (Excellent).</li> - <li><span class="term">Corrosion Resistance</span>: Good atmospheric and water corrosion resistance. Tarnishes in sulfurous atmospheres.</li> - <li><span class="term">Machinability</span>: Poor (gummy, long chips).</li> - <li><span class="term">Weldability</span>: Fair (brazing/soldering preferred). Susceptible to cracking with some fusion welding processes.</li> - <li><span class="term">Antimicrobial</span>: Natural biocidal properties.</li> - </ul> - <h6>Primary Applications:</h6> - <p>Electrical conductors (wires, busbars, contacts), heat exchangers (radiators, condensers), plumbing tubes, gaskets, roofing sheet.</p> - <h6>Critical Limitations:</h6> - <p>Susceptible to hydrogen embrittlement if heated in a reducing atmosphere above ~370°C (use OFHC C10100/C10200 - Oxygen-Free High Conductivity - to avoid this). Poor strength at elevated temperatures (>200°C). Low wear resistance.</p> - <h6>Processing:</h6> - <p>Strength increased by cold work. Excellent ductility and formability. Easily joined by soldering/brazing. Annealing softens and restores ductility.</p> - </div> - </td> - </tr> - <tr> - <td data-label="Material">C36000 Free-Cutting Brass (Cu-Zn-Pb)</td> - <td data-label="Equivalents">UNS C36000, CZ121 (BS)</td> - <td data-label="Forms">Rod, Bar, Shapes (limited)</td> - <td data-label="Yield">124 (Ann) - 310 (Hard Drawn)</td> - <td data-label="Tensile">338 (Ann) - 470 (Hard Drawn)</td> - <td data-label="Modulus">97</td> - <td data-label="Density">8.50</td> - <td data-label="Hardness">65 (Ann) - 120 (Hard Drawn)</td> - <td data-label="Cost Tier" class="cost-tier cost-tier-3">$$$</td> - <td> - <button class="btn btn-sm btn-outline-secondary details-toggle" type="button" data-bs-toggle="collapse" data-bs-target="#details-c360" aria-expanded="false" aria-controls="details-c360"> +</button> +<div class="collapse collapse-content" id="details-c110"> +<h6>Key Performance:</h6> +<ul> +<li><span class="term">Electrical Conductivity</span>: 100-101% IACS (Excellent). Base for conductivity ratings.</li> +<li><span class="term">Thermal Conductivity</span>: 388-391 W/m·K (Excellent).</li> +<li><span class="term">Corrosion Resistance</span>: Good atmospheric and water corrosion resistance. Tarnishes in sulfurous atmospheres.</li> +<li><span class="term">Machinability</span>: Poor (gummy, long chips).</li> +<li><span class="term">Weldability</span>: Fair (brazing/soldering preferred). Susceptible to cracking with some fusion welding processes.</li> +<li><span class="term">Antimicrobial</span>: Natural biocidal properties.</li> +</ul> +<h6>Primary Applications:</h6> +<p>Electrical conductors (wires, busbars, contacts), heat exchangers (radiators, condensers), plumbing tubes, gaskets, roofing sheet.</p> +<h6>Critical Limitations:</h6> +<p>Susceptible to hydrogen embrittlement if heated in a reducing atmosphere above ~370°C (use OFHC C10100/C10200 - Oxygen-Free High Conductivity - to avoid this). Poor strength at elevated temperatures (>200°C). Low wear resistance.</p> +<h6>Processing:</h6> +<p>Strength increased by cold work. Excellent ductility and formability. Easily joined by soldering/brazing. Annealing softens and restores ductility.</p> +</div> +</td> +</tr> +<tr> +<td data-label="Material">C36000 Free-Cutting Brass (Cu-Zn-Pb)</td> +<td data-label="Equivalents">UNS C36000, CZ121 (BS)</td> +<td data-label="Forms">Rod, Bar, Shapes (limited)</td> +<td data-label="Yield">124 (Ann) - 310 (Hard Drawn)</td> +<td data-label="Tensile">338 (Ann) - 470 (Hard Drawn)</td> +<td data-label="Modulus">97</td> +<td data-label="Density">8.50</td> +<td data-label="Hardness">65 (Ann) - 120 (Hard Drawn)</td> +<td class="cost-tier cost-tier-3" data-label="Cost Tier">$$$</td> +<td> +<button aria-controls="details-c360" aria-expanded="false" class="btn btn-sm btn-outline-secondary details-toggle" data-bs-target="#details-c360" data-bs-toggle="collapse" type="button"> Info <i class="bi bi-chevron-down"></i> - </button> - <div class="collapse collapse-content" id="details-c360"> - <h6>Key Performance:</h6> - <ul> - <li><span class="term">Electrical Conductivity</span>: ~26% IACS.</li> - <li><span class="term">Thermal Conductivity</span>: 115 W/m·K.</li> - <li><span class="term">Corrosion Resistance</span>: Good, but susceptible to dezincification in acidic or high-chloride water. Stress corrosion cracking (SCC) in ammonia.</li> - <li><span class="term">Machinability</span>: Excellent (standard for 100% machinability rating due to lead content forming small chips).</li> - <li><span class="term">Weldability</span>: Fair (brazing/soldering good). Fusion welding is difficult due to lead.</li> - </ul> - <h6>Primary Applications:</h6> - <p>Precision machined parts (screws, nuts, bolts), fittings (plumbing, pneumatic), valve components, gears, architectural hardware, musical instrument parts.</p> - <h6>Critical Limitations:</h6> - <p>Dezincification in corrosive water. Susceptible to SCC in ammonia environments. Poor cold formability due to lead content. Lead content raises environmental/health concerns in some applications.</p> - <h6>Processing:</h6> - <p>Lead addition (~2.5-3.7%) provides excellent machinability. Primarily used for hot forming or machining from rod/bar stock. Limited cold workability.</p> - </div> - </td> - </tr> - <tr> - <td data-label="Material">C63000 Nickel-Aluminum Bronze (Cu-Al-Ni-Fe)</td> - <td data-label="Equivalents">UNS C63000, AMS 4640, ASTM B150</td> - <td data-label="Forms">Rod, Bar, Tube, Forging, Casting, Plate (limited)</td> - <td data-label="Yield">380-550 (As cast/extruded, depends on HT)</td> - <td data-label="Tensile">690-820 (As cast/extruded, depends on HT)</td> - <td data-label="Modulus">117-121</td> - <td data-label="Density">7.53-7.58</td> - <td data-label="Hardness">170-230 (As cast/extruded)</td> - <td data-label="Cost Tier" class="cost-tier cost-tier-4">$$$$</td> - <td> - <button class="btn btn-sm btn-outline-secondary details-toggle" type="button" data-bs-toggle="collapse" data-bs-target="#details-c630" aria-expanded="false" aria-controls="details-c630"> +</button> +<div class="collapse collapse-content" id="details-c360"> +<h6>Key Performance:</h6> +<ul> +<li><span class="term">Electrical Conductivity</span>: ~26% IACS.</li> +<li><span class="term">Thermal Conductivity</span>: 115 W/m·K.</li> +<li><span class="term">Corrosion Resistance</span>: Good, but susceptible to dezincification in acidic or high-chloride water. Stress corrosion cracking (SCC) in ammonia.</li> +<li><span class="term">Machinability</span>: Excellent (standard for 100% machinability rating due to lead content forming small chips).</li> +<li><span class="term">Weldability</span>: Fair (brazing/soldering good). Fusion welding is difficult due to lead.</li> +</ul> +<h6>Primary Applications:</h6> +<p>Precision machined parts (screws, nuts, bolts), fittings (plumbing, pneumatic), valve components, gears, architectural hardware, musical instrument parts.</p> +<h6>Critical Limitations:</h6> +<p>Dezincification in corrosive water. Susceptible to SCC in ammonia environments. Poor cold formability due to lead content. Lead content raises environmental/health concerns in some applications.</p> +<h6>Processing:</h6> +<p>Lead addition (~2.5-3.7%) provides excellent machinability. Primarily used for hot forming or machining from rod/bar stock. Limited cold workability.</p> +</div> +</td> +</tr> +<tr> +<td data-label="Material">C63000 Nickel-Aluminum Bronze (Cu-Al-Ni-Fe)</td> +<td data-label="Equivalents">UNS C63000, AMS 4640, ASTM B150</td> +<td data-label="Forms">Rod, Bar, Tube, Forging, Casting, Plate (limited)</td> +<td data-label="Yield">380-550 (As cast/extruded, depends on HT)</td> +<td data-label="Tensile">690-820 (As cast/extruded, depends on HT)</td> +<td data-label="Modulus">117-121</td> +<td data-label="Density">7.53-7.58</td> +<td data-label="Hardness">170-230 (As cast/extruded)</td> +<td class="cost-tier cost-tier-4" data-label="Cost Tier">$$$$</td> +<td> +<button aria-controls="details-c630" aria-expanded="false" class="btn btn-sm btn-outline-secondary details-toggle" data-bs-target="#details-c630" data-bs-toggle="collapse" type="button"> Info <i class="bi bi-chevron-down"></i> - </button> - <div class="collapse collapse-content" id="details-c630"> - <h6>Key Performance:</h6> - <ul> - <li><span class="term">Electrical Conductivity</span>: ~7-13% IACS.</li> - <li><span class="term">Thermal Conductivity</span>: 38-59 W/m·K.</li> - <li><span class="term">Corrosion Resistance</span>: Excellent in seawater, brackish water, and many industrial environments; good anti-fouling and resistance to cavitation/erosion.</li> - <li><span class="term">Machinability</span>: Fair to good (produces tough, stringy chips).</li> - <li><span class="term">Weldability</span>: Good with appropriate consumables and procedures (e.g., GTAW, GMAW). Post-weld heat treatment may be needed.</li> - <li><span class="term">Wear Resistance & Strength:</span> Good, especially at moderately elevated temperatures. Non-sparking.</li> - </ul> - <h6>Primary Applications:</h6> - <p>Marine propellers, pump impellers and bodies, valve seats and stems, bearings, gears, heavy-duty bushings, non-sparking tools, components for offshore platforms.</p> - <h6>Critical Limitations:</h6> - <p>Can be susceptible to dealuminification (selective leaching of aluminum) in some aggressive acidic or high-chloride environments if not properly heat treated or if a less resistant composition is used. Higher cost than common brasses/bronzes.</p> - <h6>Processing:</h6> - <p>Heat treatable (quenching and tempering can optimize properties). Available in cast and wrought forms (e.g., extrusions, forgings). Good hot workability.</p> - </div> - </td> - </tr> - </tbody> - </table> - </div> - </section> - - <!-- Tool Steels Section --> - <section id="tool-steels" data-section-id="tool-steels"> - <h2 class="section-title"><i class="bi bi-gem"></i> Tool Steels</h2> - <div class="table-responsive"> - <table class="table table-bordered table-hover metal-table"> - <thead> - <tr> - <th>Material</th> - <th>Common Equivalents</th> - <th>Typical Forms</th> - <th>Typical Hardness (HRC)</th> - <th>Key Performance Chars.</th> - <th>Cost Tier</th> - <th>Details</th> - </tr> - </thead> - <tbody> - <tr> - <td data-label="Material">O1 (Oil Hardening)</td> - <td data-label="Equivalents">UNS T31501, AISI O1, BS BO1, JIS SKS3</td> - <td data-label="Forms">Bar, Rod, Ground Flat Stock, Drill Rod</td> - <td data-label="Hardness">57-62</td> - <td data-label="Performance">Good wear resistance, fair toughness, good machinability (annealed), fair dimensional stability in HT.</td> - <td data-label="Cost Tier" class="cost-tier cost-tier-3">$$$</td> - <td> - <button class="btn btn-sm btn-outline-secondary details-toggle" type="button" data-bs-toggle="collapse" data-bs-target="#details-o1" aria-expanded="false" aria-controls="details-o1"> +</button> +<div class="collapse collapse-content" id="details-c630"> +<h6>Key Performance:</h6> +<ul> +<li><span class="term">Electrical Conductivity</span>: ~7-13% IACS.</li> +<li><span class="term">Thermal Conductivity</span>: 38-59 W/m·K.</li> +<li><span class="term">Corrosion Resistance</span>: Excellent in seawater, brackish water, and many industrial environments; good anti-fouling and resistance to cavitation/erosion.</li> +<li><span class="term">Machinability</span>: Fair to good (produces tough, stringy chips).</li> +<li><span class="term">Weldability</span>: Good with appropriate consumables and procedures (e.g., GTAW, GMAW). Post-weld heat treatment may be needed.</li> +<li><span class="term">Wear Resistance & Strength:</span> Good, especially at moderately elevated temperatures. Non-sparking.</li> +</ul> +<h6>Primary Applications:</h6> +<p>Marine propellers, pump impellers and bodies, valve seats and stems, bearings, gears, heavy-duty bushings, non-sparking tools, components for offshore platforms.</p> +<h6>Critical Limitations:</h6> +<p>Can be susceptible to dealuminification (selective leaching of aluminum) in some aggressive acidic or high-chloride environments if not properly heat treated or if a less resistant composition is used. Higher cost than common brasses/bronzes.</p> +<h6>Processing:</h6> +<p>Heat treatable (quenching and tempering can optimize properties). Available in cast and wrought forms (e.g., extrusions, forgings). Good hot workability.</p> +</div> +</td> +</tr> +</tbody> +</table> +</div> +</section> +<!-- Tool Steels Section --> +<section data-section-id="tool-steels" id="tool-steels"> +<h2 class="section-title"><i class="bi bi-gem"></i> Tool Steels</h2> +<div class="table-responsive"> +<table class="table table-bordered table-hover metal-table"> +<thead> +<tr> +<th>Material</th> +<th>Common Equivalents</th> +<th>Typical Forms</th> +<th>Typical Hardness (HRC)</th> +<th>Key Performance Chars.</th> +<th>Cost Tier</th> +<th>Details</th> +</tr> +</thead> +<tbody> +<tr> +<td data-label="Material">O1 (Oil Hardening)</td> +<td data-label="Equivalents">UNS T31501, AISI O1, BS BO1, JIS SKS3</td> +<td data-label="Forms">Bar, Rod, Ground Flat Stock, Drill Rod</td> +<td data-label="Hardness">57-62</td> +<td data-label="Performance">Good wear resistance, fair toughness, good machinability (annealed), fair dimensional stability in HT.</td> +<td class="cost-tier cost-tier-3" data-label="Cost Tier">$$$</td> +<td> +<button aria-controls="details-o1" aria-expanded="false" class="btn btn-sm btn-outline-secondary details-toggle" data-bs-target="#details-o1" data-bs-toggle="collapse" type="button"> Info <i class="bi bi-chevron-down"></i> - </button> - <div class="collapse collapse-content" id="details-o1"> - <h6>Primary Applications:</h6> - <p>Cutting tools (short run taps, drills, reamers), gauges, blanking and forming dies for simpler shapes and lower volumes, woodworking tools.</p> - <h6>Critical Limitations:</h6> - <p>Requires oil quench which can lead to higher distortion than air hardening grades. Lower wear resistance than A2/D2. Limited toughness at maximum hardness. Max service temp ~150-200°C.</p> - <h6>Processing Considerations:</h6> - <p>Oil hardening group. Requires precise temperature control in heat treatment (austenitizing, quenching, tempering). Tempering critical for achieving desired toughness/hardness balance. Anneal for machinability.</p> - </div> - </td> - </tr> - <tr> - <td data-label="Material">A2 (Air Hardening)</td> - <td data-label="Equivalents">UNS T30102, AISI A2, BS BA2, JIS SKD12 (approx.)</td> - <td data-label="Forms">Bar, Rod, Ground Flat Stock, Plate</td> - <td data-label="Hardness">58-62</td> - <td data-label="Performance">Very good wear resistance, good toughness (better balance than O1), fair machinability (annealed), good dimensional stability in HT.</td> - <td data-label="Cost Tier" class="cost-tier cost-tier-4">$$$$</td> - <td> - <button class="btn btn-sm btn-outline-secondary details-toggle" type="button" data-bs-toggle="collapse" data-bs-target="#details-a2" aria-expanded="false" aria-controls="details-a2"> +</button> +<div class="collapse collapse-content" id="details-o1"> +<h6>Primary Applications:</h6> +<p>Cutting tools (short run taps, drills, reamers), gauges, blanking and forming dies for simpler shapes and lower volumes, woodworking tools.</p> +<h6>Critical Limitations:</h6> +<p>Requires oil quench which can lead to higher distortion than air hardening grades. Lower wear resistance than A2/D2. Limited toughness at maximum hardness. Max service temp ~150-200°C.</p> +<h6>Processing Considerations:</h6> +<p>Oil hardening group. Requires precise temperature control in heat treatment (austenitizing, quenching, tempering). Tempering critical for achieving desired toughness/hardness balance. Anneal for machinability.</p> +</div> +</td> +</tr> +<tr> +<td data-label="Material">A2 (Air Hardening)</td> +<td data-label="Equivalents">UNS T30102, AISI A2, BS BA2, JIS SKD12 (approx.)</td> +<td data-label="Forms">Bar, Rod, Ground Flat Stock, Plate</td> +<td data-label="Hardness">58-62</td> +<td data-label="Performance">Very good wear resistance, good toughness (better balance than O1), fair machinability (annealed), good dimensional stability in HT.</td> +<td class="cost-tier cost-tier-4" data-label="Cost Tier">$$$$</td> +<td> +<button aria-controls="details-a2" aria-expanded="false" class="btn btn-sm btn-outline-secondary details-toggle" data-bs-target="#details-a2" data-bs-toggle="collapse" type="button"> Info <i class="bi bi-chevron-down"></i> - </button> - <div class="collapse collapse-content" id="details-a2"> - <h6>Primary Applications:</h6> - <p>Punches and dies (medium to high volume stamping/forming), shear blades, stamping tools for complex shapes, coining dies, long-lasting cutting tools.</p> - <h6>Critical Limitations:</h6> - <p>Lower wear resistance than D2. Requires higher austenitizing temperatures than O1. Can be more challenging to grind than O1. Max service temp ~200-250°C.</p> - <h6>Processing Considerations:</h6> - <p>Air hardening group provides less distortion than oil hardening. Requires careful heat treatment. Multiple tempers often used to optimize toughness. Surface treatments (nitriding, PVD) can further enhance wear resistance.</p> - </div> - </td> - </tr> - <tr> - <td data-label="Material">D2 (High C, High Cr Cold Work)</td> - <td data-label="Equivalents">UNS T30402, AISI D2, BS BD2, JIS SKD11, EN X153CrMoV12 (1.2379)</td> - <td data-label="Forms">Bar, Rod, Ground Flat Stock, Plate</td> - <td data-label="Hardness">58-62 (can reach 64)</td> - <td data-label="Performance">Excellent wear resistance (highest among common cold work tool steels), fair to moderate toughness, poor machinability (annealed), good dimensional stability in HT. Some corrosion resistance.</td> - <td data-label="Cost Tier" class="cost-tier cost-tier-4">$$$$</td> - <td> - <button class="btn btn-sm btn-outline-secondary details-toggle" type="button" data-bs-toggle="collapse" data-bs-target="#details-d2" aria-expanded="false" aria-controls="details-d2"> +</button> +<div class="collapse collapse-content" id="details-a2"> +<h6>Primary Applications:</h6> +<p>Punches and dies (medium to high volume stamping/forming), shear blades, stamping tools for complex shapes, coining dies, long-lasting cutting tools.</p> +<h6>Critical Limitations:</h6> +<p>Lower wear resistance than D2. Requires higher austenitizing temperatures than O1. Can be more challenging to grind than O1. Max service temp ~200-250°C.</p> +<h6>Processing Considerations:</h6> +<p>Air hardening group provides less distortion than oil hardening. Requires careful heat treatment. Multiple tempers often used to optimize toughness. Surface treatments (nitriding, PVD) can further enhance wear resistance.</p> +</div> +</td> +</tr> +<tr> +<td data-label="Material">D2 (High C, High Cr Cold Work)</td> +<td data-label="Equivalents">UNS T30402, AISI D2, BS BD2, JIS SKD11, EN X153CrMoV12 (1.2379)</td> +<td data-label="Forms">Bar, Rod, Ground Flat Stock, Plate</td> +<td data-label="Hardness">58-62 (can reach 64)</td> +<td data-label="Performance">Excellent wear resistance (highest among common cold work tool steels), fair to moderate toughness, poor machinability (annealed), good dimensional stability in HT. Some corrosion resistance.</td> +<td class="cost-tier cost-tier-4" data-label="Cost Tier">$$$$</td> +<td> +<button aria-controls="details-d2" aria-expanded="false" class="btn btn-sm btn-outline-secondary details-toggle" data-bs-target="#details-d2" data-bs-toggle="collapse" type="button"> Info <i class="bi bi-chevron-down"></i> - </button> - <div class="collapse collapse-content" id="details-d2"> - <h6>Primary Applications:</h6> - <p>High-volume blanking and forming dies, slitting cutters, thread rolling dies, long-run stamping tools, punches, wear parts, knives requiring high edge retention.</p> - <h6>Critical Limitations:</h6> - <p>Relatively brittle compared to A2 or O1, especially if not properly heat treated (requires higher austenitizing temps and careful tempering). Difficult to grind and machine. Susceptible to chipping in shock applications. Max service temp ~200-300°C.</p> - <h6>Processing Considerations:</h6> - <p>Air hardening, can also be oil quenched in some sections but air preferred for stability. Requires careful grinding post-HT using appropriate wheels. Multiple tempers often required. Cryogenic treatment can improve wear resistance and dimensional stability.</p> - </div> - </td> - </tr> - </tbody> - </table> - </div> - </section> - - <!-- Superalloys Section --> - <section id="superalloys" data-section-id="superalloys"> - <h2 class="section-title"><i class="bi bi-fire"></i> Superalloys (High-Performance Alloys)</h2> - <div class="table-responsive"> - <table class="table table-bordered table-hover metal-table"> - <thead> - <tr> - <th>Material</th> - <th>Common Equivalents</th> - <th>Typical Forms</th> - <th>Yield (MPa) at RT</th> - <th>Tensile (MPa) at RT</th> - <th>Density (g/cm³)</th> - <th>Max Recommended Service Temp (°C)</th> - <th>Cost Tier</th> - <th>Details</th> - </tr> - </thead> - <tbody> - <tr> - <td data-label="Material">Inconel 718 (Ni-based)</td> - <td data-label="Equivalents">UNS N07718, AMS 5596/5662, EN NiCr19Fe19NbMo3 (2.4668)</td> - <td data-label="Forms">Bar, Rod, Sheet, Plate, Wire, Forging, Tube, Casting, Powder</td> - <td data-label="Yield">~1035-1240 (Aged)</td> - <td data-label="Tensile">~1240-1380 (Aged)</td> - <td data-label="Density">8.19</td> - <td data-label="Service Temp">~650-700 (for high stress)</td> - <td data-label="Cost Tier" class="cost-tier cost-tier-6">$$$$$$</td> - <td> - <button class="btn btn-sm btn-outline-secondary details-toggle" type="button" data-bs-toggle="collapse" data-bs-target="#details-inco718" aria-expanded="false" aria-controls="details-inco718"> +</button> +<div class="collapse collapse-content" id="details-d2"> +<h6>Primary Applications:</h6> +<p>High-volume blanking and forming dies, slitting cutters, thread rolling dies, long-run stamping tools, punches, wear parts, knives requiring high edge retention.</p> +<h6>Critical Limitations:</h6> +<p>Relatively brittle compared to A2 or O1, especially if not properly heat treated (requires higher austenitizing temps and careful tempering). Difficult to grind and machine. Susceptible to chipping in shock applications. Max service temp ~200-300°C.</p> +<h6>Processing Considerations:</h6> +<p>Air hardening, can also be oil quenched in some sections but air preferred for stability. Requires careful grinding post-HT using appropriate wheels. Multiple tempers often required. Cryogenic treatment can improve wear resistance and dimensional stability.</p> +</div> +</td> +</tr> +</tbody> +</table> +</div> +</section> +<!-- Superalloys Section --> +<section data-section-id="superalloys" id="superalloys"> +<h2 class="section-title"><i class="bi bi-fire"></i> Superalloys (High-Performance Alloys)</h2> +<div class="table-responsive"> +<table class="table table-bordered table-hover metal-table"> +<thead> +<tr> +<th>Material</th> +<th>Common Equivalents</th> +<th>Typical Forms</th> +<th>Yield (MPa) at RT</th> +<th>Tensile (MPa) at RT</th> +<th>Density (g/cm³)</th> +<th>Max Recommended Service Temp (°C)</th> +<th>Cost Tier</th> +<th>Details</th> +</tr> +</thead> +<tbody> +<tr> +<td data-label="Material">Inconel 718 (Ni-based)</td> +<td data-label="Equivalents">UNS N07718, AMS 5596/5662, EN NiCr19Fe19NbMo3 (2.4668)</td> +<td data-label="Forms">Bar, Rod, Sheet, Plate, Wire, Forging, Tube, Casting, Powder</td> +<td data-label="Yield">~1035-1240 (Aged)</td> +<td data-label="Tensile">~1240-1380 (Aged)</td> +<td data-label="Density">8.19</td> +<td data-label="Service Temp">~650-700 (for high stress)</td> +<td class="cost-tier cost-tier-6" data-label="Cost Tier">$$$$$$</td> +<td> +<button aria-controls="details-inco718" aria-expanded="false" class="btn btn-sm btn-outline-secondary details-toggle" data-bs-target="#details-inco718" data-bs-toggle="collapse" type="button"> Info <i class="bi bi-chevron-down"></i> - </button> - <div class="collapse collapse-content" id="details-inco718"> - <h6>Key Performance:</h6> - <ul> - <li><span class="term">High-Temp Strength</span>: Excellent creep and stress-rupture strength up to ~700°C.</li> - <li><span class="term">Corrosion Resistance</span>: Excellent in many harsh environments, including resistance to oxidation and some acidic conditions.</li> - <li><span class="term">Weldability</span>: Good for a superalloy, especially resistant to post-weld cracking compared to other precipitation-hardened superalloys.</li> - <li><span class="term">Machinability</span>: Difficult (high work hardening rate, low thermal conductivity, tough chips). Requires specialized tools, rigid setups, slow speeds.</li> - </ul> - <h6>Primary Applications:</h6> - <p>Gas turbine engine components (discs, blades, shafts, casings), aerospace fasteners, nuclear reactor components, rocket motors, cryogenic tankage, turbocharger rotors, chemical processing equipment.</p> - <h6>Critical Limitations:</h6> - <p>Extremely difficult to machine. Requires specialized processing (vacuum induction melting, electroslag remelting, controlled forging). Susceptible to strain-age cracking during post-weld heat treatment if not properly managed. High cost.</p> - <h6>Processing:</h6> - <p>Precipitation hardenable (primarily by γ'' - Ni₃Nb). Typically solution treated and aged. Welding requires specific procedures (e.g., TIG, EBW) and often post-weld heat treatment. Forging requires tight temperature control.</p> - </div> - </td> - </tr> - <tr> - <td data-label="Material">Hastelloy X (Ni-Cr-Fe-Mo)</td> - <td data-label="Equivalents">UNS N06002, AMS 5754, EN NiCr22Fe18Mo (2.4665)</td> - <td data-label="Forms">Sheet, Plate, Bar, Wire, Forging, Tube, Pipe</td> - <td data-label="Yield">~240-365 (Solution Annealed)</td> - <td data-label="Tensile">~655-785 (Solution Annealed)</td> - <td data-label="Density">8.22</td> - <td data-label="Service Temp">Up to ~1000-1200 (for oxidation resistance, lower for significant stress)</td> - <td data-label="Cost Tier" class="cost-tier cost-tier-7">$$$$$$$</td> - <td> - <button class="btn btn-sm btn-outline-secondary details-toggle" type="button" data-bs-toggle="collapse" data-bs-target="#details-hastx" aria-expanded="false" aria-controls="details-hastx"> +</button> +<div class="collapse collapse-content" id="details-inco718"> +<h6>Key Performance:</h6> +<ul> +<li><span class="term">High-Temp Strength</span>: Excellent creep and stress-rupture strength up to ~700°C.</li> +<li><span class="term">Corrosion Resistance</span>: Excellent in many harsh environments, including resistance to oxidation and some acidic conditions.</li> +<li><span class="term">Weldability</span>: Good for a superalloy, especially resistant to post-weld cracking compared to other precipitation-hardened superalloys.</li> +<li><span class="term">Machinability</span>: Difficult (high work hardening rate, low thermal conductivity, tough chips). Requires specialized tools, rigid setups, slow speeds.</li> +</ul> +<h6>Primary Applications:</h6> +<p>Gas turbine engine components (discs, blades, shafts, casings), aerospace fasteners, nuclear reactor components, rocket motors, cryogenic tankage, turbocharger rotors, chemical processing equipment.</p> +<h6>Critical Limitations:</h6> +<p>Extremely difficult to machine. Requires specialized processing (vacuum induction melting, electroslag remelting, controlled forging). Susceptible to strain-age cracking during post-weld heat treatment if not properly managed. High cost.</p> +<h6>Processing:</h6> +<p>Precipitation hardenable (primarily by γ'' - Ni₃Nb). Typically solution treated and aged. Welding requires specific procedures (e.g., TIG, EBW) and often post-weld heat treatment. Forging requires tight temperature control.</p> +</div> +</td> +</tr> +<tr> +<td data-label="Material">Hastelloy X (Ni-Cr-Fe-Mo)</td> +<td data-label="Equivalents">UNS N06002, AMS 5754, EN NiCr22Fe18Mo (2.4665)</td> +<td data-label="Forms">Sheet, Plate, Bar, Wire, Forging, Tube, Pipe</td> +<td data-label="Yield">~240-365 (Solution Annealed)</td> +<td data-label="Tensile">~655-785 (Solution Annealed)</td> +<td data-label="Density">8.22</td> +<td data-label="Service Temp">Up to ~1000-1200 (for oxidation resistance, lower for significant stress)</td> +<td class="cost-tier cost-tier-7" data-label="Cost Tier">$$$$$$$</td> +<td> +<button aria-controls="details-hastx" aria-expanded="false" class="btn btn-sm btn-outline-secondary details-toggle" data-bs-target="#details-hastx" data-bs-toggle="collapse" type="button"> Info <i class="bi bi-chevron-down"></i> - </button> - <div class="collapse collapse-content" id="details-hastx"> - <h6>Key Performance:</h6> - <ul> - <li><span class="term">High-Temp Strength</span>: Good, primarily used for its excellent oxidation resistance rather than highest strength. Retains ductility after prolonged high-temp exposure.</li> - <li><span class="term">Oxidation Resistance</span>: Outstanding up to ~1200°C due to formation of a protective oxide scale. Good resistance to carburization and nitriding.</li> - <li><span class="term">Fabricability</span>: Good for a superalloy (forming, welding).</li> - <li><span class="term">Machinability</span>: Difficult, similar challenges to other nickel-based superalloys.</li> - </ul> - <h6>Primary Applications:</h6> - <p>Gas turbine combustors and afterburner components (cans, ducting, flame holders), industrial furnace parts (muffles, retorts, radiant tubes), chemical process industry components requiring high-temp oxidation resistance and resistance to stress corrosion cracking.</p> - <h6>Critical Limitations:</h6> - <p>Not as strong as precipitation-hardened superalloys like Inconel 718 at moderate temperatures (below ~700°C). Subject to aging embrittlement (loss of ductility) after long exposures in the 650-900°C range if not carefully considered in design. Very high cost.</p> - <h6>Processing:</h6> - <p>Solid-solution strengthened (not precipitation hardenable). Typically used in the solution annealed condition. Readily welded (TIG, MIG, resistance) and formed using techniques for Ni-based alloys. Careful cleaning is essential before heating.</p> - </div> - </td> - </tr> - </tbody> - </table> - </div> - </section> - - <!-- Emerging Materials Section --> - <section id="emerging-materials" data-section-id="emerging-materials"> - <h2 class="section-title"><i class="bi bi-lightbulb-fill"></i> Emerging Metallic Materials</h2> - <div class="row"> - <div class="col-md-6 mb-3"> - <div class="card emerging-material-card h-100"> - <div class="card-header"><i class="bi bi-car-front-fill"></i> Advanced High-Strength Steels (AHSS)</div> - <div class="card-body"> - <p class="card-text">AHSS are complex, sophisticated steels with carefully controlled microstructures (e.g., martensitic, bainitic, ferritic with embedded hard phases like martensite in Dual Phase - DP steels, or retained austenite in TRIP steels). They offer significantly higher strength (typically >550 MPa yield) compared to conventional steels, allowing for weight reduction in components without compromising safety or performance.</p> - <h6>Key Characteristics:</h6> - <ul> - <li>High strength-to-weight ratio</li> - <li>Good formability for their strength level (varies by grade)</li> - <li>Improved crashworthiness and energy absorption</li> - </ul> - <h6>Primary Applications:</h6> - <p>Automotive body structures (pillars, rails, bumpers, door intrusion beams), chassis components, agricultural equipment.</p> - <h6>Considerations:</h6> - <p>Weldability can be challenging (requires specific procedures), springback during forming, higher cost than conventional steels.</p> - </div> - </div> - </div> - <div class="col-md-6 mb-3"> - <div class="card emerging-material-card h-100"> - <div class="card-header"><i class="bi bi-intersect"></i> Metal Matrix Composites (MMCs)</div> - <div class="card-body"> - <p class="card-text">MMCs consist of a metal matrix (e.g., aluminum, titanium, magnesium) reinforced with a secondary phase, typically ceramic particles (e.g., Silicon Carbide - SiC, Alumina - Al₂O₃) or fibers (e.g., carbon, SiC). The reinforcement enhances specific properties of the base metal.</p> - <h6>Key Characteristics:</h6> - <ul> - <li>Increased stiffness and strength</li> - <li>Improved wear resistance</li> - <li>Enhanced high-temperature performance</li> - <li>Tailorable thermal expansion and conductivity</li> - </ul> - <h6>Primary Applications:</h6> - <p>Aerospace components (structural parts, engine components), automotive parts (brake rotors, pistons, connecting rods), electronic packaging/heat sinks, sporting goods.</p> - <h6>Considerations:</h6> - <p>Higher cost, potentially reduced ductility and toughness compared to unreinforced matrix, complex fabrication processes, machining challenges.</p> - </div> - </div> - </div> - <div class="col-md-6 mb-3"> - <div class="card emerging-material-card h-100"> - <div class="card-header"><i class="bi bi-pentagon-fill"></i> Amorphous Metals (Metallic Glasses)</div> - <div class="card-body"> - <p class="card-text">Amorphous metals lack a long-range ordered crystalline structure, resulting in a "glassy" atomic arrangement. This is achieved by very rapid cooling of molten alloys.</p> - <h6>Key Characteristics:</h6> - <ul> - <li>Very high strength and hardness (often exceeding crystalline counterparts)</li> - <li>Excellent elasticity (high elastic strain limit)</li> - <li>Good corrosion and wear resistance</li> - <li>Unique magnetic properties (soft or hard, depending on composition)</li> - </ul> - <h6>Primary Applications:</h6> - <p>Transformer cores (low energy loss), sporting equipment (golf clubs, baseball bats), consumer electronics casings (watches, phones), medical implants and surgical tools, precision molds, wear-resistant coatings.</p> - <h6>Considerations:</h6> - <p>Limited size/thickness due to rapid cooling requirement (though bulk metallic glasses - BMGs - are improving this), can be brittle in tension, specialized processing, higher cost.</p> - </div> - </div> - </div> - <div class="col-md-6 mb-3"> - <div class="card emerging-material-card h-100"> - <div class="card-header"><i class="bi bi-shuffle"></i> High Entropy Alloys (HEAs)</div> - <div class="card-body"> - <p class="card-text">HEAs are a newer class of alloys typically composed of five or more principal elements in relatively equal or near-equal atomic percentages (5-35 at.% each). This high configurational entropy can lead to the formation of simple solid-solution phases (e.g., FCC, BCC) instead of complex intermetallics, offering unique property combinations.</p> - <h6>Key Characteristics:</h6> - <ul> - <li>High strength and hardness</li> - <li>Good ductility and toughness (in some systems)</li> - <li>Excellent wear and corrosion resistance</li> - <li>Good thermal stability and high-temperature strength</li> - <li>Potential for exceptional fatigue resistance and radiation tolerance.</li> - </ul> - <h6>Primary Applications:</h6> - <p>Still largely in research & development, but potential uses include: high-temperature structural components (aerospace, power generation), wear-resistant coatings, cryogenic applications, biomedical implants, catalysts, nuclear reactor materials.</p> - <h6>Considerations:</h6> - <p>Vast compositional space makes alloy design complex, processing can be challenging, understanding long-term phase stability is ongoing, generally high material cost due to multiple (often expensive) elements.</p> - </div> - </div> - </div> - </div> - </section> - - <!-- Selection Decision Matrix Section --> - <section id="selection-matrix" class="matrix-section"> - <h2 class="section-title"><i class="bi bi-card-checklist"></i> Selection Decision Matrix</h2> - <div class="row"> - <div class="col-md-6"> - <div class="card"> - <div class="card-header">Strength-to-Weight Critical:</div> - <ul class="list-group list-group-flush"> - <li class="list-group-item">1. <span class="term">Ti-6Al-4V</span> (aerospace, medical)</li> - <li class="list-group-item">2. <span class="term">7075-T6 Aluminum</span> (performance automotive, aerospace)</li> - <li class="list-group-item">3. <span class="term">High-Strength Alloy Steels (e.g., 4340, AHSS)</span> (high load, when cost is a greater concern than weight vs. Ti/Al)</li> - <li class="list-group-item">4. <span class="term">Magnesium Alloys</span> (ultra-lightweight, specific applications - not detailed above but relevant)</li> - <li class="list-group-item">5. <span class="term">MMCs (Al or Mg matrix)</span> (specialized high performance)</li> - </ul> - </div> - </div> - <div class="col-md-6"> - <div class="card"> - <div class="card-header">Corrosion Resistance Critical:</div> - <ul class="list-group list-group-flush"> - <li class="list-group-item">1. <span class="term">Titanium Alloys (CP Ti, Ti-6Al-4V)</span> (extreme environments, seawater, many chemicals)</li> - <li class="list-group-item">2. <span class="term">Superalloys (Inconel, Hastelloy)</span> (aggressive chemical and high-temp environments)</li> - <li class="list-group-item">3. <span class="term">316 Stainless Steel</span> (marine, chemical, pharmaceutical)</li> - <li class="list-group-item">4. <span class="term">Nickel-Aluminum Bronze</span> (seawater, anti-fouling)</li> - <li class="list-group-item">5. <span class="term">6061 Aluminum</span> (atmospheric, fresh water)</li> - <li class="list-group-item">6. <span class="term">Amorphous Metals (some compositions)</span> (excellent in specific media)</li> - </ul> - </div> - </div> - <div class="col-md-6"> - <div class="card"> - <div class="card-header">High Temperature (>500°C) Service:</div> - <ul class="list-group list-group-flush"> - <li class="list-group-item">1. <span class="term">Superalloys (e.g., Hastelloy X, Inconel 718)</span> (>650°C, up to 1200°C for some)</li> - <li class="list-group-item">2. <span class="term">Some Stainless Steels (e.g., 310S, specialized grades)</span> (500-800°C, depends on grade and atmosphere)</li> - <li class="list-group-item">3. <span class="term">Refractory Metals (Mo, W, Ta)</span> (>1200°C - not detailed above but critical for extreme temps)</li> - <li class="list-group-item">4. <span class="term">Tool Steels (Hot Work Grades like H13)</span> (Up to ~500-600°C with tempering considerations)</li> - <li class="list-group-item">5. <span class="term">High Entropy Alloys (some compositions)</span> (potential for very high temps)</li> - </ul> - </div> - </div> - <div class="col-md-6"> - <div class="card"> - <div class="card-header">Cost-Performance Optimization (General Purpose):</div> - <ul class="list-group list-group-flush"> - <li class="list-group-item">1. <span class="term">A36 Carbon Steel</span> (structural, low stress, lowest cost)</li> - <li class="list-group-item">2. <span class="term">6061 Aluminum</span> (moderate strength, good corrosion resistance, light weight, good processability)</li> - <li class="list-group-item">3. <span class="term">304 Stainless Steel</span> (good corrosion resistance, aesthetic appeal, moderate cost)</li> - <li class="list-group-item">4. <span class="term">Medium Carbon Alloy Steels (e.g., 4140)</span> (higher strength than plain carbon, heat treatable, moderate cost)</li> - </ul> - </div> - </div> - <div class="col-md-6"> - <div class="card"> - <div class="card-header">Electrical/Thermal Conductivity Critical:</div> - <ul class="list-group list-group-flush"> - <li class="list-group-item">1. <span class="term">Copper Alloys (e.g., C11000 ETP)</span> (highest electrical/thermal)</li> - <li class="list-group-item">2. <span class="term">Aluminum Alloys (e.g., 6061, 1xxx series)</span> (very good electrical/thermal, lighter than copper)</li> - <li class="list-group-item">3. <span class="term">Carbon Steels</span> (moderate thermal conductivity, poor electrical)</li> - <li class="list-group-item">4. <span class="term">MMCs (e.g. Al/SiC for thermal management)</span> (tailorable)</li> - </ul> - </div> - </div> - <div class="col-md-6"> - <div class="card"> - <div class="card-header">High Hardness / Wear Resistance Critical:</div> - <ul class="list-group list-group-flush"> - <li class="list-group-item">1. <span class="term">Tool Steels (D2, A2, O1 - hardened)</span> (dies, cutters, wear parts)</li> - <li class="list-group-item">2. <span class="term">Hardened Alloy Steels (e.g., 4140, 4340 - nitrided or case hardened)</span></li> - <li class="list-group-item">3. <span class="term">Nickel-Aluminum Bronze (C63000)</span> (bearings, gears)</li> - <li class="list-group-item">4. <span class="term">Amorphous Metals (Metallic Glasses)</span> (coatings, precision parts)</li> - <li class="list-group-item">5. <span class="term">MMCs (with ceramic reinforcement)</span> (specialized wear components)</li> - <li class="list-group-item">6. <span class="term">High Entropy Alloys (some compositions)</span></li> - </ul> - </div> - </div> - </div> - </section> - - <!-- Processing Compatibility Warning Matrix Section --> - <section id="processing-warnings" class="matrix-section"> - <h2 class="section-title"><i class="bi bi-exclamation-triangle-fill"></i> Processing Compatibility Warning Matrix</h2> - <div class="card"> - <div class="card-body"> - <ul class="list-unstyled warning-matrix"> - <li>⚠️ <span class="term">Welding Difficulties/Restrictions:</span> - <ul> - <li><span class="term">7075 & 2024 Aluminum:</span> Generally not recommended for fusion welding (prone to cracking).</li> - <li><span class="term">Tool Steels (Hardened):</span> Require special procedures (pre/post heat, specific consumables) if welded at all; often avoided.</li> - <li><span class="term">Martensitic Stainless Steels (e.g., 400 series hardened):</span> Require pre/post heat.</li> - <li><span class="term">Titanium Alloys:</span> Require inert gas shielding for all heated zones to prevent contamination.</li> - <li><span class="term">Superalloys:</span> Often require specialized techniques, consumables, controlled atmospheres, and are prone to cracking.</li> - <li><span class="term">Some AHSS:</span> Can have narrow welding windows and HAZ softening concerns.</li> - </ul> - </li> - <li>⚠️ <span class="term">Galvanic Corrosion Risk - Dissimilar Metal Contact:</span> - <ul> - <li><span class="term">Aluminum + Steel/Stainless Steel/Copper:</span> Aluminum will corrode preferentially. Isolation required.</li> - <li><span class="term">Titanium + Steel/Aluminum:</span> Steel/Aluminum will corrode. Isolation often needed.</li> - <li><span class="term">Carbon Steel + Stainless Steel:</span> Carbon steel corrodes.</li> - <li>Always consult a galvanic series chart for specific environment and potential difference.</li> - </ul> - </li> - <li>⚠️ <span class="term">Hydrogen Embrittlement Risk:</span> - <ul> - <li><span class="term">High-Strength Steels (e.g., 4340, Tool Steels, some AHSS):</span> Susceptible, especially after plating, pickling, or in hydrogen-rich environments. Baking after plating is crucial.</li> - <li><span class="term">Titanium Alloys:</span> Can absorb hydrogen at elevated temperatures or from certain processes, leading to embrittlement.</li> - <li><span class="term">Martensitic Stainless Steels:</span> Can be susceptible.</li> - </ul> - </li> - <li>⚠️ <span class="term">Critical Heat Treatment Requirements:</span> - <ul> - <li>All heat-treatable alloys (<span class="term">Alloy Steels, PH Stainless, Al Alloys (2xxx, 6xxx, 7xxx), Ti Alloys, Tool Steels, Superalloys</span>) require precise temperature control, soak times, and quench/aging parameters to achieve desired properties. Deviations can lead to drastically reduced performance or failure.</li> - <li><span class="term">Austenitic Stainless Steels (304, 316):</span> Can be sensitized (loss of corrosion resistance at grain boundaries) if heated in ~450-850°C range (e.g., during welding without L-grade or stabilization).</li> - </ul> - </li> - <li>⚠️ <span class="term">Machinability Challenges:</span> - <ul> - <li><span class="term">Titanium Alloys:</span> Low thermal conductivity, galling, work hardening, reactivity.</li> - <li><span class="term">Superalloys:</span> Extreme work hardening, high strength at cutting temps, abrasive phases.</li> - <li><span class="term">Austenitic Stainless Steels:</span> High work hardening rate, gummy chips.</li> - <li><span class="term">Tool Steels (Hardened):</span> Very difficult, often requires grinding or specialized hard machining.</li> - <li><span class="term">MMCs:</span> Abrasive reinforcements cause rapid tool wear.</li> - </ul> - </li> - <li>⚠️ <span class="term">Stress Corrosion Cracking (SCC) Susceptibility:</span> - <ul> - <li><span class="term">High-Strength Al Alloys (7075, 2024):</span> Especially in certain tempers (e.g., T6 for 7075) and corrosive environments (chlorides). T7x tempers improve resistance.</li> - <li><span class="term">Austenitic Stainless Steels (304, 316):</span> In chloride environments above ~60°C under tensile stress.</li> - <li><span class="term">High-Strength Steels:</span> In specific corrosive media under tensile stress.</li> - <li><span class="term">Brasses (High Zinc):</span> In ammonia environments (season cracking).</li> - </ul> - </li> - </ul> - </div> - </div> - </section> - - - </div> <!-- /metals-data-container --> - </main> - - <footer> - <div class="container"> - <p>© <span id="currentYear"></span> Engineering Metals Cheatsheet - Lab Edition. For educational and quick reference purposes only. Always consult detailed material specifications and expert advice for critical applications.</p> - <p>Data compiled from various engineering handbooks and industry sources. While efforts are made for accuracy, no warranty is implied.</p> - <p>Cheatsheet generated by AI, based on user-provided data and guidelines.</p> - </div> - </footer> - - <!-- Bootstrap JS Bundle (Popper.js included) --> - <script src="https://cdn.jsdelivr.net/npm/[email protected]/dist/js/bootstrap.bundle.min.js" integrity="sha384-YvpcrYf0tY3lHB60NNkmXc5s9fDVZLESaAA55NDzOxhy9GkcIdslK1eN7N6jIeHz" crossorigin="anonymous"></script> - <script> +</button> +<div class="collapse collapse-content" id="details-hastx"> +<h6>Key Performance:</h6> +<ul> +<li><span class="term">High-Temp Strength</span>: Good, primarily used for its excellent oxidation resistance rather than highest strength. Retains ductility after prolonged high-temp exposure.</li> +<li><span class="term">Oxidation Resistance</span>: Outstanding up to ~1200°C due to formation of a protective oxide scale. Good resistance to carburization and nitriding.</li> +<li><span class="term">Fabricability</span>: Good for a superalloy (forming, welding).</li> +<li><span class="term">Machinability</span>: Difficult, similar challenges to other nickel-based superalloys.</li> +</ul> +<h6>Primary Applications:</h6> +<p>Gas turbine combustors and afterburner components (cans, ducting, flame holders), industrial furnace parts (muffles, retorts, radiant tubes), chemical process industry components requiring high-temp oxidation resistance and resistance to stress corrosion cracking.</p> +<h6>Critical Limitations:</h6> +<p>Not as strong as precipitation-hardened superalloys like Inconel 718 at moderate temperatures (below ~700°C). Subject to aging embrittlement (loss of ductility) after long exposures in the 650-900°C range if not carefully considered in design. Very high cost.</p> +<h6>Processing:</h6> +<p>Solid-solution strengthened (not precipitation hardenable). Typically used in the solution annealed condition. Readily welded (TIG, MIG, resistance) and formed using techniques for Ni-based alloys. Careful cleaning is essential before heating.</p> +</div> +</td> +</tr> +</tbody> +</table> +</div> +</section> +<!-- Emerging Materials Section --> +<section data-section-id="emerging-materials" id="emerging-materials"> +<h2 class="section-title"><i class="bi bi-lightbulb-fill"></i> Emerging Metallic Materials</h2> +<div class="row"> +<div class="col-md-6 mb-3"> +<div class="card emerging-material-card h-100"> +<div class="card-header"><i class="bi bi-car-front-fill"></i> Advanced High-Strength Steels (AHSS)</div> +<div class="card-body"> +<p class="card-text">AHSS are complex, sophisticated steels with carefully controlled microstructures (e.g., martensitic, bainitic, ferritic with embedded hard phases like martensite in Dual Phase - DP steels, or retained austenite in TRIP steels). They offer significantly higher strength (typically >550 MPa yield) compared to conventional steels, allowing for weight reduction in components without compromising safety or performance.</p> +<h6>Key Characteristics:</h6> +<ul> +<li>High strength-to-weight ratio</li> +<li>Good formability for their strength level (varies by grade)</li> +<li>Improved crashworthiness and energy absorption</li> +</ul> +<h6>Primary Applications:</h6> +<p>Automotive body structures (pillars, rails, bumpers, door intrusion beams), chassis components, agricultural equipment.</p> +<h6>Considerations:</h6> +<p>Weldability can be challenging (requires specific procedures), springback during forming, higher cost than conventional steels.</p> +</div> +</div> +</div> +<div class="col-md-6 mb-3"> +<div class="card emerging-material-card h-100"> +<div class="card-header"><i class="bi bi-intersect"></i> Metal Matrix Composites (MMCs)</div> +<div class="card-body"> +<p class="card-text">MMCs consist of a metal matrix (e.g., aluminum, titanium, magnesium) reinforced with a secondary phase, typically ceramic particles (e.g., Silicon Carbide - SiC, Alumina - Al₂O₃) or fibers (e.g., carbon, SiC). The reinforcement enhances specific properties of the base metal.</p> +<h6>Key Characteristics:</h6> +<ul> +<li>Increased stiffness and strength</li> +<li>Improved wear resistance</li> +<li>Enhanced high-temperature performance</li> +<li>Tailorable thermal expansion and conductivity</li> +</ul> +<h6>Primary Applications:</h6> +<p>Aerospace components (structural parts, engine components), automotive parts (brake rotors, pistons, connecting rods), electronic packaging/heat sinks, sporting goods.</p> +<h6>Considerations:</h6> +<p>Higher cost, potentially reduced ductility and toughness compared to unreinforced matrix, complex fabrication processes, machining challenges.</p> +</div> +</div> +</div> +<div class="col-md-6 mb-3"> +<div class="card emerging-material-card h-100"> +<div class="card-header"><i class="bi bi-pentagon-fill"></i> Amorphous Metals (Metallic Glasses)</div> +<div class="card-body"> +<p class="card-text">Amorphous metals lack a long-range ordered crystalline structure, resulting in a "glassy" atomic arrangement. This is achieved by very rapid cooling of molten alloys.</p> +<h6>Key Characteristics:</h6> +<ul> +<li>Very high strength and hardness (often exceeding crystalline counterparts)</li> +<li>Excellent elasticity (high elastic strain limit)</li> +<li>Good corrosion and wear resistance</li> +<li>Unique magnetic properties (soft or hard, depending on composition)</li> +</ul> +<h6>Primary Applications:</h6> +<p>Transformer cores (low energy loss), sporting equipment (golf clubs, baseball bats), consumer electronics casings (watches, phones), medical implants and surgical tools, precision molds, wear-resistant coatings.</p> +<h6>Considerations:</h6> +<p>Limited size/thickness due to rapid cooling requirement (though bulk metallic glasses - BMGs - are improving this), can be brittle in tension, specialized processing, higher cost.</p> +</div> +</div> +</div> +<div class="col-md-6 mb-3"> +<div class="card emerging-material-card h-100"> +<div class="card-header"><i class="bi bi-shuffle"></i> High Entropy Alloys (HEAs)</div> +<div class="card-body"> +<p class="card-text">HEAs are a newer class of alloys typically composed of five or more principal elements in relatively equal or near-equal atomic percentages (5-35 at.% each). This high configurational entropy can lead to the formation of simple solid-solution phases (e.g., FCC, BCC) instead of complex intermetallics, offering unique property combinations.</p> +<h6>Key Characteristics:</h6> +<ul> +<li>High strength and hardness</li> +<li>Good ductility and toughness (in some systems)</li> +<li>Excellent wear and corrosion resistance</li> +<li>Good thermal stability and high-temperature strength</li> +<li>Potential for exceptional fatigue resistance and radiation tolerance.</li> +</ul> +<h6>Primary Applications:</h6> +<p>Still largely in research & development, but potential uses include: high-temperature structural components (aerospace, power generation), wear-resistant coatings, cryogenic applications, biomedical implants, catalysts, nuclear reactor materials.</p> +<h6>Considerations:</h6> +<p>Vast compositional space makes alloy design complex, processing can be challenging, understanding long-term phase stability is ongoing, generally high material cost due to multiple (often expensive) elements.</p> +</div> +</div> +</div> +</div> +</section> +<!-- Selection Decision Matrix Section --> +<section class="matrix-section" id="selection-matrix"> +<h2 class="section-title"><i class="bi bi-card-checklist"></i> Selection Decision Matrix</h2> +<div class="row"> +<div class="col-md-6"> +<div class="card"> +<div class="card-header">Strength-to-Weight Critical:</div> +<ul class="list-group list-group-flush"> +<li class="list-group-item">1. <span class="term">Ti-6Al-4V</span> (aerospace, medical)</li> +<li class="list-group-item">2. <span class="term">7075-T6 Aluminum</span> (performance automotive, aerospace)</li> +<li class="list-group-item">3. <span class="term">High-Strength Alloy Steels (e.g., 4340, AHSS)</span> (high load, when cost is a greater concern than weight vs. Ti/Al)</li> +<li class="list-group-item">4. <span class="term">Magnesium Alloys</span> (ultra-lightweight, specific applications - not detailed above but relevant)</li> +<li class="list-group-item">5. <span class="term">MMCs (Al or Mg matrix)</span> (specialized high performance)</li> +</ul> +</div> +</div> +<div class="col-md-6"> +<div class="card"> +<div class="card-header">Corrosion Resistance Critical:</div> +<ul class="list-group list-group-flush"> +<li class="list-group-item">1. <span class="term">Titanium Alloys (CP Ti, Ti-6Al-4V)</span> (extreme environments, seawater, many chemicals)</li> +<li class="list-group-item">2. <span class="term">Superalloys (Inconel, Hastelloy)</span> (aggressive chemical and high-temp environments)</li> +<li class="list-group-item">3. <span class="term">316 Stainless Steel</span> (marine, chemical, pharmaceutical)</li> +<li class="list-group-item">4. <span class="term">Nickel-Aluminum Bronze</span> (seawater, anti-fouling)</li> +<li class="list-group-item">5. <span class="term">6061 Aluminum</span> (atmospheric, fresh water)</li> +<li class="list-group-item">6. <span class="term">Amorphous Metals (some compositions)</span> (excellent in specific media)</li> +</ul> +</div> +</div> +<div class="col-md-6"> +<div class="card"> +<div class="card-header">High Temperature (>500°C) Service:</div> +<ul class="list-group list-group-flush"> +<li class="list-group-item">1. <span class="term">Superalloys (e.g., Hastelloy X, Inconel 718)</span> (>650°C, up to 1200°C for some)</li> +<li class="list-group-item">2. <span class="term">Some Stainless Steels (e.g., 310S, specialized grades)</span> (500-800°C, depends on grade and atmosphere)</li> +<li class="list-group-item">3. <span class="term">Refractory Metals (Mo, W, Ta)</span> (>1200°C - not detailed above but critical for extreme temps)</li> +<li class="list-group-item">4. <span class="term">Tool Steels (Hot Work Grades like H13)</span> (Up to ~500-600°C with tempering considerations)</li> +<li class="list-group-item">5. <span class="term">High Entropy Alloys (some compositions)</span> (potential for very high temps)</li> +</ul> +</div> +</div> +<div class="col-md-6"> +<div class="card"> +<div class="card-header">Cost-Performance Optimization (General Purpose):</div> +<ul class="list-group list-group-flush"> +<li class="list-group-item">1. <span class="term">A36 Carbon Steel</span> (structural, low stress, lowest cost)</li> +<li class="list-group-item">2. <span class="term">6061 Aluminum</span> (moderate strength, good corrosion resistance, light weight, good processability)</li> +<li class="list-group-item">3. <span class="term">304 Stainless Steel</span> (good corrosion resistance, aesthetic appeal, moderate cost)</li> +<li class="list-group-item">4. <span class="term">Medium Carbon Alloy Steels (e.g., 4140)</span> (higher strength than plain carbon, heat treatable, moderate cost)</li> +</ul> +</div> +</div> +<div class="col-md-6"> +<div class="card"> +<div class="card-header">Electrical/Thermal Conductivity Critical:</div> +<ul class="list-group list-group-flush"> +<li class="list-group-item">1. <span class="term">Copper Alloys (e.g., C11000 ETP)</span> (highest electrical/thermal)</li> +<li class="list-group-item">2. <span class="term">Aluminum Alloys (e.g., 6061, 1xxx series)</span> (very good electrical/thermal, lighter than copper)</li> +<li class="list-group-item">3. <span class="term">Carbon Steels</span> (moderate thermal conductivity, poor electrical)</li> +<li class="list-group-item">4. <span class="term">MMCs (e.g. Al/SiC for thermal management)</span> (tailorable)</li> +</ul> +</div> +</div> +<div class="col-md-6"> +<div class="card"> +<div class="card-header">High Hardness / Wear Resistance Critical:</div> +<ul class="list-group list-group-flush"> +<li class="list-group-item">1. <span class="term">Tool Steels (D2, A2, O1 - hardened)</span> (dies, cutters, wear parts)</li> +<li class="list-group-item">2. <span class="term">Hardened Alloy Steels (e.g., 4140, 4340 - nitrided or case hardened)</span></li> +<li class="list-group-item">3. <span class="term">Nickel-Aluminum Bronze (C63000)</span> (bearings, gears)</li> +<li class="list-group-item">4. <span class="term">Amorphous Metals (Metallic Glasses)</span> (coatings, precision parts)</li> +<li class="list-group-item">5. <span class="term">MMCs (with ceramic reinforcement)</span> (specialized wear components)</li> +<li class="list-group-item">6. <span class="term">High Entropy Alloys (some compositions)</span></li> +</ul> +</div> +</div> +</div> +</section> +<!-- Processing Compatibility Warning Matrix Section --> +<section class="matrix-section" id="processing-warnings"> +<h2 class="section-title"><i class="bi bi-exclamation-triangle-fill"></i> Processing Compatibility Warning Matrix</h2> +<div class="card"> +<div class="card-body"> +<ul class="list-unstyled warning-matrix"> +<li>⚠️ <span class="term">Welding Difficulties/Restrictions:</span> +<ul> +<li><span class="term">7075 & 2024 Aluminum:</span> Generally not recommended for fusion welding (prone to cracking).</li> +<li><span class="term">Tool Steels (Hardened):</span> Require special procedures (pre/post heat, specific consumables) if welded at all; often avoided.</li> +<li><span class="term">Martensitic Stainless Steels (e.g., 400 series hardened):</span> Require pre/post heat.</li> +<li><span class="term">Titanium Alloys:</span> Require inert gas shielding for all heated zones to prevent contamination.</li> +<li><span class="term">Superalloys:</span> Often require specialized techniques, consumables, controlled atmospheres, and are prone to cracking.</li> +<li><span class="term">Some AHSS:</span> Can have narrow welding windows and HAZ softening concerns.</li> +</ul> +</li> +<li>⚠️ <span class="term">Galvanic Corrosion Risk - Dissimilar Metal Contact:</span> +<ul> +<li><span class="term">Aluminum + Steel/Stainless Steel/Copper:</span> Aluminum will corrode preferentially. Isolation required.</li> +<li><span class="term">Titanium + Steel/Aluminum:</span> Steel/Aluminum will corrode. Isolation often needed.</li> +<li><span class="term">Carbon Steel + Stainless Steel:</span> Carbon steel corrodes.</li> +<li>Always consult a galvanic series chart for specific environment and potential difference.</li> +</ul> +</li> +<li>⚠️ <span class="term">Hydrogen Embrittlement Risk:</span> +<ul> +<li><span class="term">High-Strength Steels (e.g., 4340, Tool Steels, some AHSS):</span> Susceptible, especially after plating, pickling, or in hydrogen-rich environments. Baking after plating is crucial.</li> +<li><span class="term">Titanium Alloys:</span> Can absorb hydrogen at elevated temperatures or from certain processes, leading to embrittlement.</li> +<li><span class="term">Martensitic Stainless Steels:</span> Can be susceptible.</li> +</ul> +</li> +<li>⚠️ <span class="term">Critical Heat Treatment Requirements:</span> +<ul> +<li>All heat-treatable alloys (<span class="term">Alloy Steels, PH Stainless, Al Alloys (2xxx, 6xxx, 7xxx), Ti Alloys, Tool Steels, Superalloys</span>) require precise temperature control, soak times, and quench/aging parameters to achieve desired properties. Deviations can lead to drastically reduced performance or failure.</li> +<li><span class="term">Austenitic Stainless Steels (304, 316):</span> Can be sensitized (loss of corrosion resistance at grain boundaries) if heated in ~450-850°C range (e.g., during welding without L-grade or stabilization).</li> +</ul> +</li> +<li>⚠️ <span class="term">Machinability Challenges:</span> +<ul> +<li><span class="term">Titanium Alloys:</span> Low thermal conductivity, galling, work hardening, reactivity.</li> +<li><span class="term">Superalloys:</span> Extreme work hardening, high strength at cutting temps, abrasive phases.</li> +<li><span class="term">Austenitic Stainless Steels:</span> High work hardening rate, gummy chips.</li> +<li><span class="term">Tool Steels (Hardened):</span> Very difficult, often requires grinding or specialized hard machining.</li> +<li><span class="term">MMCs:</span> Abrasive reinforcements cause rapid tool wear.</li> +</ul> +</li> +<li>⚠️ <span class="term">Stress Corrosion Cracking (SCC) Susceptibility:</span> +<ul> +<li><span class="term">High-Strength Al Alloys (7075, 2024):</span> Especially in certain tempers (e.g., T6 for 7075) and corrosive environments (chlorides). T7x tempers improve resistance.</li> +<li><span class="term">Austenitic Stainless Steels (304, 316):</span> In chloride environments above ~60°C under tensile stress.</li> +<li><span class="term">High-Strength Steels:</span> In specific corrosive media under tensile stress.</li> +<li><span class="term">Brasses (High Zinc):</span> In ammonia environments (season cracking).</li> +</ul> +</li> +</ul> +</div> +</div> +</section> +</div> <!-- /metals-data-container --> +</main> +<footer> +<div class="container"> +<p>© <span id="currentYear"></span> Engineering Metals Cheatsheet - Lab Edition. For educational and quick reference purposes only. Always consult detailed material specifications and expert advice for critical applications.</p> +<p>Data compiled from various engineering handbooks and industry sources. 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