{"id":18626,"date":"2025-12-11T16:12:13","date_gmt":"2025-12-11T08:12:13","guid":{"rendered":"https:\/\/daxuns.com\/?p=18626"},"modified":"2025-12-11T16:12:55","modified_gmt":"2025-12-11T08:12:55","slug":"hastelloy-c-276-vs-hastelloy-x","status":"publish","type":"post","link":"https:\/\/daxuns.com\/fr\/hastelloy-c-276-vs-hastelloy-x\/","title":{"rendered":"Hastelloy C-276 vs Hastelloy X"},"content":{"rendered":"<p>In the world of high-performance nickel alloys, the Hastelloy name is synonymous with quality and durability. However, choosing the right grade for a demanding application is critical. Hastelloy C-276 and Hastelloy X are two of the most popular alloys, but they are engineered to excel in very different\u00a0environments. One is a master of corrosion resistance, while the other is a champion of high-temperature strength.<\/p>\n<p>This guide provides a detailed comparison of Hastelloy C-276 vs Hastelloy X to help you select the correct material for your project.<\/p>\n<h4><span style=\"color: #3366ff;\"><strong><b>What is Hastelloy C-276?<\/b><\/strong><\/span><\/h4>\n<p>Hastelloy C-276 is a nickel-molybdenum-chromium-tungsten alloy known for its outstanding corrosion resistance in a wide range of severe environments. It is one of the most versatile corrosion-resistant alloys available, effective against both oxidizing and reducing media. Its primary design purpose is to withstand the most aggressive chemical attacks, making it a staple in the chemical processing and pollution control industries.<\/p>\n<h6><strong><b>Key Characteristics of Hastelloy C-276:<\/b><\/strong><\/h6>\n<ul>\n<li>Exceptional resistance to pitting, crevice corrosion, and stress-corrosion cracking.<\/li>\n<li>Excellent resistance to strong oxidizing chlorides and wet chlorine gas.<\/li>\n<li>Superior performance in mixtures of contaminated acids (such as sulfuric and hydrochloric acid).<\/li>\n<\/ul>\n<h4><span style=\"color: #3366ff;\"><strong><b>What is Hastelloy X?<\/b><\/strong><\/span><\/h4>\n<p>Hastelloy X is a nickel-chromium-iron-molybdenum alloy that is part of the superalloy family. Its primary strength is its exceptional performance at extremely high temperatures. It is a solid-solution-strengthened alloy that offers a remarkable combination of high strength, outstanding oxidation resistance, and excellent fabricability. It is the go-to material for components in the hottest sections of gas turbines and industrial furnaces.<\/p>\n<h6><span style=\"color: #000000;\"><strong><b>Key Characteristics of Hastelloy X:<\/b><\/strong><\/span><\/h6>\n<ul>\n<li>Outstanding high-temperature strength and creep-rupture properties.<\/li>\n<li>Exceptional resistance to oxidation at temperatures up to 1200\u00b0C (2200\u00b0F).<\/li>\n<li>Excellent fabricability, particularly weldability, for a superalloy.<\/li>\n<\/ul>\n<h4><span style=\"color: #3366ff;\"><strong><b>Key Difference: Chemical Composition<\/b><\/strong><\/span><\/h4>\n<p>The fundamental difference between these two alloys lies in their chemical composition, which dictates their primary strengths. Hastelloy C-276 is optimized with high molybdenum and tungsten for corrosion resistance, while Hastelloy X uses high chromium and iron for high-temperature stability.<\/p>\n<table>\n<tbody>\n<tr>\n<td width=\"169\">\u00c9l\u00e9ment<\/td>\n<td width=\"213\">Hastelloy C-276<\/p>\n<p>(Weight %)<\/td>\n<td width=\"185\">Hastelloy X<\/p>\n<p>(Weight %)<\/td>\n<\/tr>\n<tr>\n<td width=\"169\">Nickel (Ni)<\/td>\n<td width=\"213\">54.0 &#8211; 58.0<\/td>\n<td width=\"185\">45.0 &#8211; 55.0<\/td>\n<\/tr>\n<tr>\n<td width=\"169\">Molybd\u00e8ne (Mo)<\/td>\n<td width=\"213\">15.0 &#8211; 17.0<\/td>\n<td width=\"185\">8.0 &#8211; 10.0<\/td>\n<\/tr>\n<tr>\n<td width=\"169\">Chrome (Cr)<\/td>\n<td width=\"213\">14.5 &#8211; 16.5<\/td>\n<td width=\"185\">20.5 &#8211; 23.0<\/td>\n<\/tr>\n<tr>\n<td width=\"169\">Fer (Fe)<\/td>\n<td width=\"213\">4.0 &#8211; 7.0<\/td>\n<td width=\"185\">17.0 &#8211; 20.0<\/td>\n<\/tr>\n<tr>\n<td width=\"169\">Tungsten (W)<\/td>\n<td width=\"213\">3.0 &#8211; 4.5<\/td>\n<td width=\"185\">0.2 &#8211; 1.0<\/td>\n<\/tr>\n<tr>\n<td width=\"169\">Cobalt (Co)<\/td>\n<td width=\"213\">2.5 max<\/td>\n<td width=\"185\">0.5 &#8211; 2.5<\/td>\n<\/tr>\n<tr>\n<td width=\"169\">Carbon \u00a9<\/td>\n<td width=\"213\">0.010 max<\/td>\n<td width=\"185\">0.05 &#8211; 0.15<\/td>\n<\/tr>\n<tr>\n<td width=\"169\">Mangan\u00e8se (Mn)<\/td>\n<td width=\"213\">1.0 max<\/td>\n<td width=\"185\">1.0 max<\/td>\n<\/tr>\n<tr>\n<td width=\"169\">Silicium (Si)<\/td>\n<td width=\"213\">0.08 max<\/td>\n<td width=\"185\">1.0 max<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h4><span style=\"color: #3366ff;\"><strong><b>Key Difference: Performance and Properties<\/b><\/strong><\/span><\/h4>\n<p>The variation in composition directly translates to distinct performance characteristics for each alloy.<\/p>\n<table>\n<tbody>\n<tr>\n<td width=\"133\">Propri\u00e9t\u00e9<\/td>\n<td width=\"204\">Hastelloy C-276<\/td>\n<td width=\"230\">Hastelloy X<\/td>\n<\/tr>\n<tr>\n<td width=\"133\">R\u00e9sistance \u00e0 la corrosion<\/td>\n<td width=\"204\">Exceptional.\u00a0The benchmark for severe chemical environments.<\/td>\n<td width=\"230\">Good, but not designed for aggressive corrosion.<\/td>\n<\/tr>\n<tr>\n<td width=\"133\">High-Temp. Strength<\/td>\n<td width=\"204\">Good, but loses strength rapidly above 650\u00b0C.<\/td>\n<td width=\"230\">Exceptional.\u00a0Maintains strength up to ~1200\u00b0C.<\/td>\n<\/tr>\n<tr>\n<td width=\"133\">Oxidation Resistance<\/td>\n<td width=\"204\">Good up to ~1095\u00b0C.<\/td>\n<td width=\"230\">Exceptional.\u00a0Forms a\u00a0highly protective, adherent oxide scale.<\/td>\n<\/tr>\n<tr>\n<td width=\"133\">Primary Design Goal<\/td>\n<td width=\"204\">Resisting corrosive chemicals.<\/td>\n<td width=\"230\">Resisting extreme heat and oxidation.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h4><span style=\"color: #3366ff;\"><strong><b>Application Comparison<\/b><\/strong><\/span><\/h4>\n<h6><strong>Choose Hastelloy C-276 for applications where:<\/strong><\/h6>\n<ul>\n<li><b><\/b><strong><b>Corrosion is the primary concern.<\/b><\/strong><\/li>\n<li>The environment involves aggressive acids, chlorides, or oxidizing agents.<\/li>\n<li>Components like pumps, valves, and piping systems are exposed to harsh chemicals.<\/li>\n<\/ul>\n<h6><strong><b>Common Hastelloy C-276 Applications:<\/b><\/strong><\/h6>\n<ul>\n<li>Chemical and petrochemical processing equipment.<\/li>\n<li>Pulp and paper bleaching plants.<\/li>\n<li>Flue gas desulfurization (FGD) systems.<\/li>\n<li>Pharmaceutical and food processing equipment.<\/li>\n<\/ul>\n<h6><strong><b>Choose Hastelloy X for applications where:<\/b><\/strong><\/h6>\n<ul>\n<li><b><\/b><strong><b>Extreme high-temperature strength and oxidation are the primary concerns.<\/b><\/strong><\/li>\n<li>The component is exposed to sustained heat and thermal cycling.<\/li>\n<li>Fabricability, especially welding, is a critical requirement for a high-temp alloy.<\/li>\n<\/ul>\n<h6><strong><b>Common Hastelloy X Applications:<\/b><\/strong><\/h6>\n<ul>\n<li>Gas turbine engine combustors, transition ducts, and afterburners.<\/li>\n<li>Industrial furnace components like baskets, trays, and retorts.<\/li>\n<li>Heat-treating equipment and furnace hardware.<\/li>\n<li>Aircraft engine thrust reversers.<\/li>\n<\/ul>\n<h4><span style=\"color: #3366ff;\">Conclusion<\/span><\/h4>\n<p>While both are premium Hastelloy alloys, C-276 and X are specialists for different challenges. Hastelloy C-276 is the ultimate solution for combating severe corrosion, while Hastelloy X is the workhorse for surviving extreme heat. By matching the alloy\u2019s core strength to your application\u2019s most demanding condition, you guarantee performance, safety, and longevity.<\/p>\n<p>If you need assistance selecting the right material or require a competitive quote for your project,\u00a0<a href=\"https:\/\/daxuns.com\/fr\/contact-us\/\" target=\"_blank\" rel=\"noopener\"><strong>contact Daxun Alloys Co., Ltd. <\/strong><\/a>We are experts in high-performance nickel alloys. We supply both <a href=\"https:\/\/daxuns.com\/fr\/hastelloy-c276-plate\/\" target=\"_blank\" rel=\"noopener\">Hastelloy C-276<\/a> et <a href=\"https:\/\/daxuns.com\/fr\/hastelloy-x-plate\/\" target=\"_blank\" rel=\"noopener\">Hastelloy X<\/a> in various forms, including plate, sheet, bar, and pipe.Our material experts are ready to provide the guidance and support you need.<\/p>\n<hr \/>\n<p><span style=\"color: #808080;\"><em>Information reference source:<\/em><\/span><\/p>\n<p><span style=\"color: #808080;\">HASTELLOY<sup>\u00ae<\/sup> C-276:<\/span> <a href=\"https:\/\/haynesintl.com\/en\/alloys\/alloy-portfolio\/corrosion-resistant-alloys\/hastelloy-c-276\/\" target=\"_blank\" rel=\"noopener\">https:\/\/haynesintl.com\/en\/alloys\/alloy-portfolio\/corrosion-resistant-alloys\/hastelloy-c-276\/<\/a><\/p>\n<p><span style=\"color: #808080;\">HASTELLOY<sup>\u00ae<\/sup> X:<\/span> <a href=\"https:\/\/haynesintl.com\/en\/alloys\/alloy-portfolio\/high-temperature-alloys\/hastelloy-x\/\" target=\"_blank\" rel=\"noopener\">https:\/\/haynesintl.com\/en\/alloys\/alloy-portfolio\/high-temperature-alloys\/hastelloy-x\/<\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>In the world of high-performance nickel alloys, the Hastelloy name is synonymous with quality and durability. However, choosing the right grade for a demanding application is critical. Hastelloy C-276 and Hastelloy X are two of the most popular alloys, but they are engineered to excel in very different\u00a0environments. One is [&hellip;]<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"default","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[1],"tags":[],"class_list":["post-18626","post","type-post","status-publish","format-standard","hentry","category-blog"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Hastelloy C-276 vs Hastelloy X - Daxun<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/daxuns.com\/fr\/hastelloy-c-276-vs-hastelloy-x\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Hastelloy C-276 vs Hastelloy X - Daxun\" \/>\n<meta property=\"og:description\" content=\"In the world of high-performance nickel alloys, the Hastelloy name is synonymous with quality and durability. 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