{"id":15288,"date":"2026-05-28T11:21:48","date_gmt":"2026-05-28T03:21:48","guid":{"rendered":"https:\/\/www.hq-specialalloys.com\/?p=15288"},"modified":"2026-06-11T11:23:34","modified_gmt":"2026-06-11T03:23:34","slug":"ams5663-inconel-718-properties-applications-and-material-specifications","status":"publish","type":"post","link":"https:\/\/www.hq-specialalloys.com\/fr\/ams5663-inconel-718-properties-applications-and-material-specifications\/","title":{"rendered":"AMS5663 Inconel 718: Properties, Applications, and Material Specifications"},"content":{"rendered":"<p><strong>What Is AMS5663?<\/strong><\/p>\n<p>AMS5663 is an aerospace material specification developed by SAE International for precipitation-hardened nickel alloy Inconel 718 (UNS N07718). This specification is widely used for high-strength alloy bars, forgings, and rings intended for demanding aerospace, energy, marine, and industrial applications.<\/p>\n<p>Inconel 718 is a nickel-chromium alloy known for its excellent combination of:<\/p>\n<ul>\n<li>High tensile strength<\/li>\n<li>R\u00e9sistance \u00e0 la corrosion<\/li>\n<li>Oxidation resistance<\/li>\n<li>Fatigue resistance<\/li>\n<li>Soudabilit\u00e9<\/li>\n<li>Long-term structural stability<\/li>\n<\/ul>\n<p>Because of these characteristics, AMS5663 material is commonly selected for components operating in high-temperature and high-pressure environments.<\/p>\n<p><strong>AMS5663 Equivalent Materials<\/strong><\/p>\n<p>AMS5663 is commonly associated with the following material designations:<\/p>\n<table width=\"483\">\n<tbody>\n<tr>\n<td><strong>Standard<\/strong><\/td>\n<td><strong>Equivalent Grade<\/strong><\/td>\n<\/tr>\n<tr>\n<td>UNS<\/td>\n<td>N07718<\/td>\n<\/tr>\n<tr>\n<td>DIN\/W.Nr<\/td>\n<td>2.4668<\/td>\n<\/tr>\n<tr>\n<td>Common Trade Name<\/td>\n<td>Inconel 718<\/td>\n<\/tr>\n<tr>\n<td>Chinese Grade<\/td>\n<td>GH4169<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>According to material information published by HQ Special Alloys, Inconel 718 is also supplied under specifications including ASTM B637, AMS 5662, AMS 5663, and AMS 5832.<\/p>\n<p><strong>Chemical Composition of AMS5663 Inconel 718<\/strong><\/p>\n<p>The alloy composition of Inconel 718 provides excellent mechanical properties and corrosion resistance across a wide temperature range.<\/p>\n<p>Typical chemical composition includes:<\/p>\n<table width=\"472\">\n<tbody>\n<tr>\n<td><strong>\u00c9l\u00e9ment<\/strong><\/td>\n<td><strong>Content (%)<\/strong><\/td>\n<\/tr>\n<tr>\n<td>Nickel + Cobalt<\/td>\n<td>50.0 \u2013 55.0<\/td>\n<\/tr>\n<tr>\n<td>Chromium<\/td>\n<td>17.0 \u2013 21.0<\/td>\n<\/tr>\n<tr>\n<td>Molybdenum<\/td>\n<td>2.8 \u2013 3.3<\/td>\n<\/tr>\n<tr>\n<td>Niobium + Tantalum<\/td>\n<td>4.75 \u2013 5.5<\/td>\n<\/tr>\n<tr>\n<td>Titanium<\/td>\n<td>0.65 \u2013 1.15<\/td>\n<\/tr>\n<tr>\n<td>Aluminum<\/td>\n<td>0.2 \u2013 0.8<\/td>\n<\/tr>\n<tr>\n<td>Iron<\/td>\n<td>\u00c9quilibre<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>These values are consistent with the material data published by HQ Special Alloys for Inconel 718 products.<\/p>\n<p><strong>Key Properties of AMS5663 Material<\/strong><\/p>\n<p><strong>Excellent High-Temperature Strength<\/strong><\/p>\n<p>AMS5663 Inconel 718 maintains high tensile, creep, and fatigue strength at temperatures up to approximately 700\u00b0C. This makes it suitable for aerospace engines and gas turbine systems.<\/p>\n<p><strong>Outstanding Corrosion Resistance<\/strong><\/p>\n<p>The alloy demonstrates strong resistance to:<\/p>\n<ul>\n<li>Fissuration par corrosion sous contrainte<\/li>\n<li>Corrosion par piq\u00fbres<\/li>\n<li>Oxidation<\/li>\n<li>Marine atmospheric corrosion<\/li>\n<\/ul>\n<p>Its nickel-chromium composition allows stable performance in harsh industrial environments.<\/p>\n<p><strong>Good Weldability<\/strong><\/p>\n<p>Unlike many precipitation-hardened superalloys, Inconel 718 offers good weldability and can be processed using:<\/p>\n<ul>\n<li>GTAW<\/li>\n<li>GMAW<\/li>\n<li>Resistance welding<\/li>\n<li>Electron beam welding<\/li>\n<\/ul>\n<p>HQ Special Alloys notes that the alloy can be readily fabricated into complex components while maintaining reliable welding performance.<\/p>\n<p><strong>Cryogenic Performance<\/strong><\/p>\n<p>AMS5663 material also maintains stable mechanical properties at extremely low temperatures, making it suitable for cryogenic storage systems and aerospace fuel applications.<\/p>\n<p><strong>AMS5663 Heat Treatment<\/strong><\/p>\n<p>Inconel 718 supplied under AMS5663 is typically solution heat treated and age hardened.<\/p>\n<p>The heat treatment process improves:<\/p>\n<ul>\n<li>Limite d'\u00e9lasticit\u00e9<\/li>\n<li>R\u00e9sistance \u00e0 la traction<\/li>\n<li>Fatigue resistance<\/li>\n<li>Structural stability<\/li>\n<\/ul>\n<p>According to HQ Special Alloys, aviation-grade heat treatment systems are commonly used for Inconel 718 aerospace components.<\/p>\n<p><strong>Common Forms of AMS5663 Alloy<\/strong><\/p>\n<p>AMS5663 Inconel 718 is available in multiple product forms, including:<\/p>\n<ul>\n<li>Round bars<\/li>\n<li>Forged rings<\/li>\n<li>Flanges<\/li>\n<li>Sheets and plates<\/li>\n<li>Seamless tubes<\/li>\n<li>Welded pipes<\/li>\n<li>Fil de soudure<\/li>\n<li>Strip and coil<\/li>\n<\/ul>\n<p>HQ Special Alloys supplies Inconel 718 in hot forged, hot rolled, and cold drawn conditions for different industrial requirements.<\/p>\n<p><strong>Applications of AMS5663 Inconel 718<\/strong><\/p>\n<p>Due to its exceptional mechanical performance, AMS5663 material is widely used in:<\/p>\n<p><strong>Industrie a\u00e9rospatiale<\/strong><\/p>\n<ul>\n<li>Composants de moteurs d'avions<\/li>\n<li>Turbine discs<\/li>\n<li>Compressor parts<\/li>\n<li>Rocket engine systems<\/li>\n<li>Exhaust systems<\/li>\n<\/ul>\n<p><strong>Energy Industry<\/strong><\/p>\n<ul>\n<li>Gas turbines<\/li>\n<li>Nuclear power equipment<\/li>\n<li>\u00c9changeurs de chaleur<\/li>\n<li>High-temperature fasteners<\/li>\n<\/ul>\n<p><strong>Industrie du p\u00e9trole et du gaz<\/strong><\/p>\n<ul>\n<li>Outils de fond de puits<\/li>\n<li>High-pressure valves<\/li>\n<li>Offshore equipment<\/li>\n<\/ul>\n<p><strong>G\u00e9nie maritime<\/strong><\/p>\n<p>Its corrosion resistance also makes Inconel 718 suitable for demanding marine and offshore environments.<\/p>\n<p><strong>Why Choose AMS5663 Inconel 718?<\/strong><\/p>\n<p>AMS5663 Inconel 718 combines:<\/p>\n<ul>\n<li>Haute r\u00e9sistance<\/li>\n<li>Excellent corrosion resistance<\/li>\n<li>Good fabrication capability<\/li>\n<li>Stable high-temperature performance<\/li>\n<li>Reliable welding properties<\/li>\n<\/ul>\n<p>These advantages make it one of the most widely used nickel-based super alloys for critical industrial applications.<\/p>","protected":false},"excerpt":{"rendered":"<p>What Is AMS5663? AMS5663 is an aerospace material specification developed by SAE International for precipitation-hardened nickel alloy Inconel 718 (UNS N07718). This specification is widely used for high-strength alloy bars, forgings, and rings intended for demanding aerospace, energy, marine, and industrial applications. Inconel 718 is a nickel-chromium alloy known for its excellent combination of: High &hellip;<\/p>\n<p class=\"read-more\"> <a class=\"\" href=\"https:\/\/www.hq-specialalloys.com\/fr\/ams5663-inconel-718-properties-applications-and-material-specifications\/\"> <span class=\"screen-reader-text\">AMS5663 Inconel 718: Properties, Applications, and Material Specifications<\/span> Lire la suite\u00a0\u00bb<\/a><\/p>","protected":false},"author":5,"featured_media":15289,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"default","ast-global-header-display":"","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":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":""},"categories":[639],"tags":[],"acf":[],"_links":{"self":[{"href":"https:\/\/www.hq-specialalloys.com\/fr\/wp-json\/wp\/v2\/posts\/15288"}],"collection":[{"href":"https:\/\/www.hq-specialalloys.com\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.hq-specialalloys.com\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.hq-specialalloys.com\/fr\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/www.hq-specialalloys.com\/fr\/wp-json\/wp\/v2\/comments?post=15288"}],"version-history":[{"count":0,"href":"https:\/\/www.hq-specialalloys.com\/fr\/wp-json\/wp\/v2\/posts\/15288\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.hq-specialalloys.com\/fr\/wp-json\/wp\/v2\/media\/15289"}],"wp:attachment":[{"href":"https:\/\/www.hq-specialalloys.com\/fr\/wp-json\/wp\/v2\/media?parent=15288"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.hq-specialalloys.com\/fr\/wp-json\/wp\/v2\/categories?post=15288"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.hq-specialalloys.com\/fr\/wp-json\/wp\/v2\/tags?post=15288"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}