{"id":4117,"date":"2025-06-24T14:37:24","date_gmt":"2025-06-24T11:37:24","guid":{"rendered":"https:\/\/www.defencemetal.com\/?p=4117"},"modified":"2026-09-24T12:48:05","modified_gmt":"2026-09-24T09:48:05","slug":"nimonic-80a-uns-n07080-ams-4378-ams-5829-nickel-super-alloy","status":"publish","type":"post","link":"https:\/\/www.defencemetal.com\/index.php\/2025\/06\/24\/nimonic-80a-uns-n07080-ams-4378-ams-5829-nickel-super-alloy\/","title":{"rendered":"Nimonic 80A (UNS N07080) \u2014 ASTM B637 Nickel Super Alloy"},"content":{"rendered":"<p><!-- dm-urun-link --><\/p>\n<div style=\"border:1px solid #d7dfe4;border-left:3px solid #DD3333;background:#F7FAFB;padding:11px 15px;margin:0 0 20px;font-size:14px;line-height:1.55\"><strong style=\"color:#12303f\">We supply Nimonic 80A.<\/strong> For dimensions, standard equivalents, stock and quotations, take a look at the <a href=\"https:\/\/www.defencemetal.com\/index.php\/en\/nimonic-80a\/\"><strong>Nimonic 80A product page<\/strong><\/a>.<\/div>\n<p><!-- \/dm-urun-link --><\/p>\n<h3><b>Nimonic 80A: An Age Hardenable Super Alloy with High Temperature Strength<\/b><\/h3>\n<h3><b>Alloy Definition and Chemical Composition<\/b><\/h3>\n<p class=\"p3\"><span class=\"s2\">Nimonic 80A<\/span> consists essentially of the elements <span class=\"s2\"><a href=\"https:\/\/en.wikipedia.org\/wiki\/Nikel\">nickel<\/a> (balance)<\/span> and <span class=\"s2\">chromium (19\u201321%)<\/span> and is an age hardenable super alloy developed for high temperature applications. Thanks to being able to preserve its mechanical strength for a long time in the 650\u2013850 \u00b0C range, this alloy is preferred in the production of critical parts especially in <span class=\"s2\">gas turbines<\/span>, <span class=\"s2\">exhaust systems<\/span> and <span class=\"s2\">nuclear applications<\/span>.<\/p>\n<p class=\"p3\">Age hardening is obtained with the \u03b3\u2032 (Ni\u2083(Al,Ti)) phase precipitates provided by <span class=\"s2\">the Ti and Al additions<\/span>. This precipitate phase restricts dislocation movement within the matrix and thereby provides high resistance to the softening that increases with temperature.<\/p>\n<p class=\"p4\"><b>Typical chemical composition (% by weight):<\/b><b><\/b><\/p>\n<ul>\n<li class=\"p1\"><span class=\"s1\"><b>Nickel (Ni):<\/b><\/span> 76.0% (balance)<\/li>\n<li class=\"p1\"><span class=\"s1\"><b>Chromium (Cr):<\/b><\/span> 19.0 \u2013 21.0%<\/li>\n<li class=\"p1\"><b>Iron (Fe):<\/b><span class=\"s1\"> \u22643.0%<\/span><\/li>\n<li class=\"p1\"><b>Titanium (Ti):<\/b><span class=\"s1\"> 1.8 \u2013 2.7%<\/span><\/li>\n<li class=\"p1\"><b>Aluminium (Al):<\/b><span class=\"s1\"> 1.0 \u2013 1.8%<\/span><\/li>\n<li class=\"p1\"><b>Carbon (C):<\/b><span class=\"s1\"> \u22640.10%<\/span><\/li>\n<li class=\"p1\"><b>Manganese (Mn):<\/b><span class=\"s1\"> \u22641.0%<\/span><\/li>\n<li class=\"p1\"><b>Silicon (Si):<\/b><span class=\"s1\"> \u22641.0%<\/span><\/li>\n<li class=\"p1\"><b>Copper (Cu):<\/b><span class=\"s1\"> \u22640.2%<\/span><\/li>\n<li class=\"p1\"><b>Sulphur (S):<\/b><span class=\"s1\"> \u22640.015%<\/span><\/li>\n<\/ul>\n<p class=\"p3\">The combined Ti and Al content is generally kept between 3.5\u20134%; this constitutes the critical threshold for the formation of the \u03b3\u2032 phase.<\/p>\n<hr>\n<h3><b>Nimonic 80A <\/b><b>Standards and Specifications<\/b><\/h3>\n<p class=\"p3\"><span class=\"s2\"><b>Nimonic 80A<\/b><\/span> has been defined in the following international standards:<\/p>\n<ul>\n<li class=\"p1\"><span class=\"s1\"><b>BS HR1 \/ HR6018<\/b><\/span> \u2013 British Standard designations<\/li>\n<li class=\"p1\"><span class=\"s1\"><b>UNS N07080<\/b><\/span> \u2013 Unified Numbering System<\/li>\n<li class=\"p1\"><span class=\"s1\"><b>AMS 4378<\/b><\/span> \u2013 For bar, forged and formed products<\/li>\n<li class=\"p1\"><span class=\"s1\"><b>AMS 5829<\/b><\/span> \u2013 Wire products<\/li>\n<li class=\"p1\"><span class=\"s1\"><b>ISO 15156-3 \/ NACE MR0175<\/b><\/span> \u2013 Approval for use in H\u2082S environments<\/li>\n<\/ul>\n<p class=\"p3\">In addition, although it has no direct equivalent in ASTM, it is used together with general specifications for forged nickel alloys such as ASTM B637.<\/p>\n<hr>\n<h3><b>Nimonic 80A <\/b><b>Trade Names and Equivalent Alloys<\/b><\/h3>\n<ul>\n<li class=\"p1\"><span class=\"s1\"><b>Nimonic\u00ae 80A<\/b><\/span> \u2013 Registered name of Special Metals Corporation (SMC)<\/li>\n<li class=\"p1\"><b>UNS N07080<\/b><\/li>\n<li class=\"p1\"><b><\/b><b>ATI 80A<\/b><span class=\"s1\">, <\/span><b>VDM Alloy 80A<\/b><span class=\"s1\">, <\/span><b>Haynes 80A<\/b><span class=\"s1\"> \u2013 Different producer names<\/span><\/li>\n<li class=\"p1\">Close equivalent: <a href=\"https:\/\/www.defencemetal.com\/index.php\/2025\/06\/24\/hastelloy-x-750-inconel-x-750-2-4669-uns-n07750-ams-5542-ams-5667-nickel-alloy\/\"><span class=\"s1\"><b>Inconel X-750<\/b><\/span><\/a> (for higher temperature strength)<\/li>\n<\/ul>\n<hr>\n<h3><b>Nimonic 80A <\/b><b>Mechanical and Physical Properties<\/b><\/h3>\n<p class=\"p3\">Nimonic 80A provides high strength and oxidation resistance after the solution annealing + aging operation.<\/p>\n<p class=\"p4\"><b>Typical properties in the age hardened condition:<\/b><b><\/b><\/p>\n<ul>\n<li class=\"p1\"><b>Tensile strength (UTS):<\/b><span class=\"s1\"> 1000\u20131200 MPa<\/span><\/li>\n<li class=\"p1\"><b>Yield strength (0.2%):<\/b><span class=\"s1\"> 700\u2013850 MPa<\/span><\/li>\n<li class=\"p1\"><b>Elongation (%):<\/b><span class=\"s1\"> 15\u201320<\/span><\/li>\n<li class=\"p1\"><b>Hardness (Rockwell B):<\/b><span class=\"s1\"> HRB 95 \u2013 HRC 30<\/span><\/li>\n<li><b>Temperature range:<\/b><span class=\"s1\"> -200 \u00b0C to 850 \u00b0C<\/span><\/li>\n<li><span class=\"s1\"><b>Density:<\/b><\/span> 8.19 g\/cm\u00b3<\/li>\n<li><b>Melting range:<\/b><span class=\"s1\"> 1320\u20131380 \u00b0C<\/span><\/li>\n<\/ul>\n<p class=\"p3\"><span class=\"s2\"><b>Oxidation resistance<\/b><\/span> is very high at service temperatures up to 900 \u00b0C. It therefore offers a long service life in environmentally aggressive conditions such as turbine blades and exhaust manifolds.<\/p>\n<hr>\n<h3><b>Application Areas<\/b><\/h3>\n<p class=\"p3\">Nimonic 80A has a broad area of use in the production of parts exposed to high temperature:<\/p>\n<p class=\"p1\"><b>1.Aerospace and Gas Turbine Systems<\/b><b><\/b><\/p>\n<p class=\"p1\">#Turbine blades, gaskets, brackets, fixing elements<\/p>\n<p class=\"p1\"><b>2.Nuclear Energy<\/b><b><\/b><\/p>\n<p class=\"p1\">#In-reactor elements, bolts with high temperature strength<\/p>\n<p class=\"p1\"><b>3.Automotive and Motorsport<\/b><b><\/b><\/p>\n<p class=\"p1\">#Turbocharger blades, exhaust systems<\/p>\n<p class=\"p1\"><b>4.Chemical Process Industry<\/b><b><\/b><\/p>\n<p class=\"p1\">#Parts and fasteners resistant to corrosion and thermal stress<\/p>\n<p class=\"p1\"><b>5.Petrochemicals<\/b><b><\/b><\/p>\n<p class=\"p1\">#Fittings in environments containing H\u2082S and high temperature<\/p>\n<p class=\"p1\"><b>6.Power Plants<\/b><b><\/b><\/p>\n<p class=\"p1\">#Heat resistant welding filler metal, fixing elements<\/p>\n<hr>\n<h3><b>Advantages<\/b><\/h3>\n<ul>\n<li class=\"p1\"><b>High Temperature Strength: <\/b>It preserves its mechanical stability up to 850 \u00b0C.<\/li>\n<li class=\"p1\"><b>Precipitation Hardening (\u03b3\u2032): <\/b>The stable age hardening structure prevents deformation in long-term service.<\/li>\n<li class=\"p1\"><b>High Oxidation Resistance: <\/b>It is resistant to dry and wet oxidising environments.<\/li>\n<li class=\"p1\"><b>Thermal Fatigue Resistance: <\/b>Its resistance to cracking and deformation against repeated thermal cycles is high.<\/li>\n<li class=\"p1\"><b>Weldability: <\/b>It can be welded more easily than other nickel alloys; however, preheating and controlled cooling may be required.<\/li>\n<\/ul>\n<hr>\n<h3><b>Disadvantages<\/b><\/h3>\n<ul>\n<li class=\"p1\"><b>Machining Difficulty: <\/b>Because of its high hardness and ductile structure, special cutting tips and a low feed rate are required.<\/li>\n<li class=\"p1\"><b>Heat Treatment Sensitivity: <\/b>If the appropriate solution treatment and ageing are not carried out, the expected mechanical properties cannot be reached.<\/li>\n<li class=\"p1\"><b>High Cost: <\/b>It is more expensive than austenitic stainless steels.<\/li>\n<li class=\"p1\"><b>Ductile-Brittle transition: <\/b>It may show a tendency to brittle fracture at low temperatures.<\/li>\n<\/ul>\n<hr>\n<h3><b>Conclusion and Engineering Evaluation<\/b><\/h3>\n<p class=\"p3\"><span class=\"s2\"><b>Nimonic 80A<\/b><\/span> stands out with its balanced performance among the heat resistant, precipitation hardenable nickel-based alloys. Its <span class=\"s2\"><b>high temperature strength<\/b><\/span>, <span class=\"s2\"><b>resistance to thermal fatigue<\/b><\/span> and <span class=\"s2\"><b>oxidation durability<\/b><\/span> in particular make it an indispensable material in gas turbine components and aircraft engines.<\/p>\n<p class=\"p3\">For design engineers this alloy offers a reliable choice in applications requiring both structural strength and environmental resistance. Provided that the ageing process is controlled correctly, it stands out with the advantages of <span class=\"s2\"><b>a long service life and dimensional stability<\/b><\/span>.<\/p>\n<p>&nbsp;<\/p>\n<h5><span class=\"s1\"><b>#BSHR1<br \/>\n#HR6018<\/b><\/span><br \/>\n<span class=\"s1\"><b>#UNSN07080<br \/>\n<\/b><\/span><span class=\"s1\"><b>#AMS4378<\/b><\/span><br \/>\n<span class=\"s1\"><b>#AMS5829<\/b><\/span><br \/>\n<span class=\"s1\"><b>#ISO15156-3<br \/>\n#NACEMR0175<br \/>\n<\/b><\/span><span class=\"s1\"><b>#Nimonic\u00ae80A<\/b><\/span><br \/>\n<b><span class=\"s1\">#<\/span>UNSN07080<br \/>\n<\/b><b><\/b><b><span class=\"s1\">#<\/span>ATI80A<\/b><span class=\"s1\"><br \/>\n<\/span><b><span class=\"s1\">#<\/span>VDMAlloy80A<\/b><span class=\"s1\"><br \/>\n<\/span><b><span class=\"s1\">#<\/span>Haynes80A<\/b><\/h5>\n<p><!-- dm-ic-baglanti --><\/p>\n<div class=\"dm-ic-baglanti\" style=\"margin:28px 0 0;border:1px solid #e0e0e0;border-left:4px solid #DD3333;background:#FAFAFA;padding:16px 18px;\">\n<p style=\"font-size:12px;font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:#DD3333;margin:0 0 6px;line-height:1.4;\">We supply this material<\/p>\n<p style=\"margin:0 0 12px;font-size:15px;line-height:1.65;color:#333;\">We supply Nimonic 80A \u2014 to AMS 5829, AMS 4378 standards, in the dimensions and forms required. Contact us for stock availability and pricing.<\/p>\n<p><a href=\"https:\/\/www.defencemetal.com\/index.php\/en\/contact\/\" style=\"display:inline-block;color:#ffffff;background:#24BEE5;text-decoration:none;font-weight:600;font-size:14px;padding:10px 17px;line-height:1.2;\">Request a quotation \u2192<\/a>\n<\/div>\n<p><!-- \/dm-ic-baglanti --><\/p>\n<p><!-- dm-benzer --><\/p>\n<div class=\"dm-benzer\" style=\"margin:22px 0 0;padding:14px 16px;border:1px solid #e0e0e0;background:#FBFCFD;\">\n<p style=\"font-size:11px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:#9aa3a8;margin:0 0 8px;line-height:1.4;\">Similar products<\/p>\n<p style=\"margin:0;font-size:15px;line-height:2;color:#333;\"><a href=\"https:\/\/www.defencemetal.com\/index.php\/2025\/06\/01\/haynes-25-l-605-ams-5537-ams-5759-cobalt-superalloy\/\" style=\"color:#24BEE5;font-weight:600;text-decoration:none;\">Haynes 25<\/a>  \u00b7  <a href=\"https:\/\/www.defencemetal.com\/index.php\/en\/inconel-600\/\" style=\"color:#24BEE5;font-weight:600;text-decoration:none;\">Inconel 600<\/a>  \u00b7  <a href=\"https:\/\/www.defencemetal.com\/index.php\/en\/inconel-601\/\" style=\"color:#24BEE5;font-weight:600;text-decoration:none;\">Inconel 601<\/a>  \u00b7  <a href=\"https:\/\/www.defencemetal.com\/index.php\/en\/inconel-625\/\" style=\"color:#24BEE5;font-weight:600;text-decoration:none;\">Inconel 625<\/a>  \u00b7  <a href=\"https:\/\/www.defencemetal.com\/index.php\/en\/nickel-alloys\/\" style=\"color:#666;font-weight:600;text-decoration:none;\">All nickel alloys \u2192<\/a><\/p>\n<\/div>\n<p><!-- \/dm-benzer --><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Nimonic 80A (UNS N07080 \/ BS HR1) is an age hardenable nickel-chromium super alloy strengthened by gamma prime precipitation and stable up to 850 \u00b0C. Chemical composition, mechanical and physical properties, BS, AMS 4378, AMS 5829 and NACE MR0175 standards, gas turbine, nuclear and motorsport applications.<\/p>\n","protected":false},"author":1,"featured_media":2124,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[8],"tags":[],"class_list":["post-4117","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-articles"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Nimonic 80A (UNS N07080) \u2014 ASTM B637 Nickel Super Alloy - Defence Metal<\/title>\n<meta name=\"description\" content=\"Nimonic 80A (UNS N07080 \/ BS HR1) is an age hardenable nickel-chromium super alloy strengthened by gamma prime precipitation and stable up to 850 \u00b0C.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.defencemetal.com\/index.php\/2025\/06\/24\/nimonic-80a-uns-n07080-ams-4378-ams-5829-nickel-super-alloy\/\" \/>\n<meta property=\"og:locale\" content=\"tr_TR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Nimonic 80A (UNS N07080) \u2014 ASTM B637 Nickel Super Alloy - 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