{"id":4083,"date":"2025-06-01T22:46:23","date_gmt":"2025-06-01T19:46:23","guid":{"rendered":"https:\/\/www.defencemetal.com\/?p=4083"},"modified":"2026-09-17T23:08:19","modified_gmt":"2026-09-17T20:08:19","slug":"invar-36-alloy-36-astm-f1684-low-expansion-alloy","status":"publish","type":"post","link":"https:\/\/www.defencemetal.com\/index.php\/2025\/06\/01\/invar-36-alloy-36-astm-f1684-low-expansion-alloy\/","title":{"rendered":"Invar 36 (Alloy 36 \/ 1.3912) \u2014 ASTM F1684 Low Expansion 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 Invar 36.<\/strong> For sizes, standard equivalents, stock and quotations, take a look at the <a href=\"https:\/\/www.defencemetal.com\/index.php\/en\/invar-36\/\"><strong>Invar 36 product page<\/strong><\/a>.<\/div>\n<p><!-- \/dm-urun-link --><\/p>\n<h3><b>Invar 36: <\/b><b>Indispensable for Precision Industrial Applications Thanks to Its Low Thermal Expansion<\/b><\/h3>\n<p class=\"p3\"><span class=\"s2\">Invar 36<\/span> is a nickel\u2013iron based alloy that stands out for its low thermal expansion, high mechanical strength and machinability. Thanks to these properties it has a wide range of applications in both industrial and scientific fields.<\/p>\n<h3><b>Chemical Composition and Microstructure of Invar 36<\/b><\/h3>\n<p class=\"p3\">Invar 36 is a nickel\u2013iron alloy containing roughly 36% nickel (Ni) with the balance iron (Fe). That specific ratio allows the alloy to reach an abnormally low coefficient of thermal expansion. The chemical composition of the alloy is generally as follows:<\/p>\n<ul>\n<li class=\"p1\">Iron (Fe): 63\u201364%<\/li>\n<li class=\"p1\">Nickel (Ni): 35\u201336%<\/li>\n<li class=\"p1\">Carbon (C): \u22640.1%<\/li>\n<li class=\"p1\">Manganese (Mn), Silicon (Si), Sulphur (S): may be present in very low proportions<\/li>\n<\/ul>\n<p class=\"p3\">This composition reduces the linear coefficient of expansion to values as low as 1.2 x 10\u207b\u2076 \/\u00b0C, particularly in the 20\u2013100 \u00b0C range. Microstructurally, Invar 36 shows a homogeneous and balanced crystal structure, which keeps its thermal expansion behaviour consistent.<\/p>\n<h3><b>Mechanical and Physical Properties of Invar 36<\/b><\/h3>\n<p class=\"p3\">The basic mechanical properties of Invar 36 matter for the durability and machinability of the alloy. Typical properties are as follows:<\/p>\n<ul>\n<li class=\"p1\">Tensile strength: between 450 and 700 MPa, varying with the application and the heat treatment<\/li>\n<li class=\"p1\">Yield strength: between 250 and 450 MPa<\/li>\n<li class=\"p1\">Elongation: around 20%<\/li>\n<li class=\"p1\">Hardness: 150\u2013220 HB (Brinell hardness)<\/li>\n<li class=\"p1\">Density: 8.1 g\/cm\u00b3<\/li>\n<li class=\"p1\">Electrical resistivity: 0.83 \u03bc\u03a9\u00b7m<\/li>\n<\/ul>\n<p class=\"p3\">In addition, the thermal conductivity of Invar 36 is relatively low, and its magnetic properties widen the application fields of the alloy.<\/p>\n<h3><b>Invar 36 <\/b><b> Standards and Specifications<\/b><\/h3>\n<p class=\"p3\">Invar 36 is defined by many international standards and specifications. The commonly used standards are:<\/p>\n<ul>\n<li class=\"p1\"><span class=\"s1\"><b>AMS 9040<\/b><\/span>: for forged and rolled products<\/li>\n<li class=\"p1\"><span class=\"s1\"><b>ASTM A755<\/b><\/span>: general standard for precision alloys<\/li>\n<li class=\"p1\"><span class=\"s1\"><b>UNS K93600<\/b><\/span>: Unified Numbering System code<\/li>\n<li class=\"p1\"><span class=\"s1\"><b>DIN 1.3912<\/b><\/span>: the equivalent in the German standards<\/li>\n<\/ul>\n<p class=\"p3\">These standards ensure quality control by detailing the chemical composition, mechanical properties and production processes of the material. Commercially, Invar 36 is generally referred to as \u201cFeNi36\u201d or simply \u201cInvar\u201d.<\/p>\n<h3><b>Invar 36 <\/b><b>Industrial Applications<\/b><\/h3>\n<p class=\"p3\">Thanks to its low coefficient of expansion and high dimensional stability, Invar 36 is preferred particularly where temperature changes create problems in precision measurement, control and mechanical systems.<\/p>\n<ul>\n<li class=\"p1\"><span class=\"s1\"><b>Precision measuring instruments<\/b><\/span>: thermometers, barometers and precision print and pressure sensors benefit from the dimensional stability of Invar 36.<\/li>\n<li class=\"p1\"><span class=\"s1\"><b>Aerospace<\/b><\/span>: used in structural components exposed to large temperature differences in aircraft and spacecraft.<\/li>\n<li class=\"p1\"><span class=\"s1\"><b>Electronics industry<\/b><\/span>: preferred in the manufacture of semiconductor production equipment and precision circuit elements.<\/li>\n<li class=\"p1\"><span class=\"s1\"><b>Optical systems<\/b><\/span>: provides dimensional stability in microscope and telescope frames, optical platforms and other precision optical devices.<\/li>\n<li class=\"p1\"><span class=\"s1\"><b>Watchmaking<\/b><\/span>: used in mechanical watches to improve timekeeping accuracy.<\/li>\n<li class=\"p1\"><span class=\"s1\"><b>Piping and valve systems<\/b><\/span>: used in systems where expansion caused by temperature changes is critical.<\/li>\n<\/ul>\n<h3><b>Invar 36 <\/b><b>Machinability and Manufacturing Techniques<\/b><\/h3>\n<p class=\"p3\">Despite its high strength, Invar 36 has quite good machinability. It can be shaped with high precision in cutting, milling and turning operations when special cutting tools are used. It is also suitable for welding (TIG, MIG) and brazing methods.<\/p>\n<p class=\"p3\">Care must be taken with heat treatments, however, in order to preserve the thermal expansion behaviour. Excessive heat treatment can cause changes in the microstructure, so production processes must be well controlled.<\/p>\n<h3><b>6. Commercial Supply and Purchasing Keywords<\/b><\/h3>\n<p class=\"p3\">Invar 36 is supplied by metal suppliers in bar, plate, strip and tube form.<\/p>\n<hr>\n<h2><b>Advantages<\/b><\/h2>\n<ul>\n<li class=\"p1\">A very low coefficient of thermal expansion provides dimensional stability in precision applications<\/li>\n<li class=\"p1\">High mechanical strength and durability<\/li>\n<li class=\"p1\">Good machinability and weldability<\/li>\n<li class=\"p1\">Stable performance over a wide temperature range<\/li>\n<li class=\"p1\">Its magnetic properties are an advantage in some special applications<\/li>\n<li class=\"p1\">Widely available in industry and supplied to standards<\/li>\n<\/ul>\n<hr>\n<h2><b>Disadvantages<\/b><\/h2>\n<ul>\n<li class=\"p1\">Its temperature capability is more limited than that of cobalt-based alloys<\/li>\n<li class=\"p1\">It is among the higher-cost alloys<\/li>\n<li class=\"p1\">It requires special machining parameters during processing<\/li>\n<li class=\"p1\">Its expansion behaviour can deteriorate at extreme temperatures<\/li>\n<li class=\"p1\">It is not as corrosion resistant as stainless steel<\/li>\n<\/ul>\n<hr>\n<p class=\"p3\">Invar 36 is an indispensable material for precision industrial applications where low thermal expansion is critical. It is used across a wide field, from aerospace to precision measurement systems and from optics to the electronics sector. In purchasing decisions, the material\u2019s conformity with international standards such as AMS and ASTM, its technical data sheets and the reliability of the supplier should all be assessed carefully.<\/p>\n<p>&nbsp;<\/p>\n<h5><span class=\"s1\"><b>#AMS9040<br \/>\n<\/b><\/span><span class=\"s1\"><b>#ASTMA755<br \/>\n<\/b><\/span><span class=\"s1\"><b>#UNSK93600<br \/>\n<\/b><\/span><span class=\"s1\"><b>#DIN1.3912<\/b><\/span><\/h5>\n<p><!-- dm-tablo --><\/p>\n<div class=\"dm-tablo\" style=\"border:1px solid #d7dfe4;background:#ffffff;margin:24px 0 18px;\">\n<div style=\"background:#DD3333;color:#ffffff;font-size:13px;font-weight:700;letter-spacing:.04em;text-transform:uppercase;padding:10px 12px;line-height:1.35;\">Chemical Composition \u00b7 Invar 36 (1.3912)<\/div>\n<div style=\"padding:2px 12px 8px;\">\n<table id=\"tablepress-58\" class=\"tablepress tablepress-id-58\">\n<thead>\n<tr class=\"row-1\">\n\t<th class=\"column-1\">Kimyasal Bile\u015fimi<br \/>\n(INVAR 36, Alloy 36)<br \/>\n<strong><\/th><td class=\"column-2\"><\/td><th class=\"column-3\">Oda S\u0131cakl\u0131\u011f\u0131ndaki<br \/>\nMekanik \u00d6zellikleri<br \/>\n<strong><\/th><td class=\"column-4\"><\/td>\n<\/tr>\n<tr class=\"row-2\">\n\t<th class=\"column-1\">Kalite <strong><\/th><th class=\"column-2\">Alloy 36 (1.3912, NILO 36)<\/th><th class=\"column-3\">\u00d6zellikler<\/th><th class=\"column-4\">De\u011ferler<\/th>\n<\/tr>\n<\/thead>\n<tbody class=\"row-hover\">\n<tr class=\"row-3\">\n\t<td class=\"column-1\">Ni<\/td><td class=\"column-2\">%36.0<\/td><td class=\"column-3\">\u00d6z k\u00fctlesi (\u00d6zg\u00fcl a\u011f\u0131rl\u0131\u011f\u0131)<\/td><td class=\"column-4\">8110 kg\/m\u00b3<\/td>\n<\/tr>\n<tr class=\"row-4\">\n\t<td class=\"column-1\">Fe<\/td><td class=\"column-2\">%64.0<\/td><td class=\"column-3\">Erime S\u0131cakl\u0131\u011f\u0131<\/td><td class=\"column-4\">1430\u00b0C aras\u0131<\/td>\n<\/tr>\n<tr class=\"row-5\">\n\t<td class=\"column-1\"><\/td><td class=\"column-2\"><\/td><td class=\"column-3\">Akma Dayan\u0131m\u0131 (20\u00b0C)<\/td><td class=\"column-4\">240 MPa<\/td>\n<\/tr>\n<tr class=\"row-6\">\n\t<td class=\"column-1\"><\/td><td class=\"column-2\"><\/td><td class=\"column-3\">Kopma Dayan\u0131m\u0131 (20\u00b0C)<\/td><td class=\"column-4\">490 MPa<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<!-- #tablepress-58 from cache --><\/div>\n<\/div>\n<p><!-- \/dm-tablo --><\/p>\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 Invar 36 (1.3912 \/ Alloy 36) \u2014 to ASTM F1684, in the size and form required. For stock and pricing:<\/p>\n<p><a href=\"https:\/\/www.defencemetal.com\/index.php\/en\/invar-36\/\" style=\"display:inline-block;color:#ffffff;background:#24BEE5;text-decoration:none;font-weight:600;font-size:14px;padding:10px 17px;line-height:1.2;\">Invar 36 product page \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;\">Related 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\/24\/kovar-1-3981-uns-k94610-astm-f15-controlled-expansion-alloy\/\" style=\"color:#24BEE5;font-weight:600;text-decoration:none;\">Kovar<\/a>  \u00b7  <a href=\"https:\/\/www.defencemetal.com\/index.php\/2025\/06\/25\/tungsten-wolfram-w-astm-b760-astm-b777-refractory-metal\/\" style=\"color:#24BEE5;font-weight:600;text-decoration:none;\">Tungsten<\/a>  \u00b7  <a href=\"https:\/\/www.defencemetal.com\/index.php\/en\/nikel-200\/\" style=\"color:#24BEE5;font-weight:600;text-decoration:none;\">Nickel 200<\/a>  \u00b7  <a href=\"https:\/\/www.defencemetal.com\/index.php\/en\/nikel-201\/\" style=\"color:#24BEE5;font-weight:600;text-decoration:none;\">Nickel 201<\/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>Invar 36 (FeNi36 \/ Alloy 36) low thermal expansion alloy: composition, mechanical properties, AMS and ASTM standards, and precision, aerospace and optical applications.<\/p>\n","protected":false},"author":1,"featured_media":2174,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[8],"tags":[],"class_list":["post-4083","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>Invar 36 (Alloy 36 \/ 1.3912) \u2014 ASTM F1684 Low Expansion Alloy - Defence Metal<\/title>\n<meta name=\"description\" content=\"Invar 36 (FeNi36 \/ Alloy 36) low thermal expansion alloy: composition, mechanical properties, AMS and ASTM standards, and precision, aerospace and optical\u2026\" \/>\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\/01\/invar-36-alloy-36-astm-f1684-low-expansion-alloy\/\" \/>\n<meta property=\"og:locale\" content=\"tr_TR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Invar 36 (Alloy 36 \/ 1.3912) \u2014 ASTM F1684 Low Expansion Alloy - Defence Metal\" \/>\n<meta property=\"og:description\" content=\"Invar 36 (FeNi36 \/ Alloy 36) low thermal expansion alloy: composition, mechanical properties, AMS and ASTM standards, and precision, aerospace and optical\u2026\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.defencemetal.com\/index.php\/2025\/06\/01\/invar-36-alloy-36-astm-f1684-low-expansion-alloy\/\" \/>\n<meta property=\"og:site_name\" content=\"Defence Metal\" \/>\n<meta property=\"article:published_time\" content=\"2025-06-01T19:46:23+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-09-17T20:08:19+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.defencemetal.com\/wp-content\/uploads\/2025\/06\/Invar36-3-scaled-e1767438600863.avif\" \/>\n\t<meta property=\"og:image:width\" content=\"2558\" \/>\n\t<meta property=\"og:image:height\" content=\"1634\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Defence Metal\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Yazan:\" \/>\n\t<meta name=\"twitter:data1\" content=\"Defence Metal\" \/>\n\t<meta name=\"twitter:label2\" content=\"Tahmini okuma s\u00fcresi\" \/>\n\t<meta name=\"twitter:data2\" content=\"4 dakika\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.defencemetal.com\\\/index.php\\\/2025\\\/06\\\/01\\\/invar-36-alloy-36-astm-f1684-low-expansion-alloy\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.defencemetal.com\\\/index.php\\\/2025\\\/06\\\/01\\\/invar-36-alloy-36-astm-f1684-low-expansion-alloy\\\/\"},\"author\":{\"name\":\"Defence Metal\",\"@id\":\"https:\\\/\\\/www.defencemetal.com\\\/#\\\/schema\\\/person\\\/94280a98e3bea4aa8b76811f913b167a\"},\"headline\":\"Invar 36 (Alloy 36 \\\/ 1.3912) \u2014 ASTM F1684 Low Expansion Alloy\",\"datePublished\":\"2025-06-01T19:46:23+00:00\",\"dateModified\":\"2026-09-17T20:08:19+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/www.defencemetal.com\\\/index.php\\\/2025\\\/06\\\/01\\\/invar-36-alloy-36-astm-f1684-low-expansion-alloy\\\/\"},\"wordCount\":734,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\\\/\\\/www.defencemetal.com\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/www.defencemetal.com\\\/index.php\\\/2025\\\/06\\\/01\\\/invar-36-alloy-36-astm-f1684-low-expansion-alloy\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.defencemetal.com\\\/wp-content\\\/uploads\\\/2025\\\/06\\\/Invar36-3-scaled-e1767438600863.avif\",\"articleSection\":[\"Articles\"],\"inLanguage\":\"tr\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/www.defencemetal.com\\\/index.php\\\/2025\\\/06\\\/01\\\/invar-36-alloy-36-astm-f1684-low-expansion-alloy\\\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.defencemetal.com\\\/index.php\\\/2025\\\/06\\\/01\\\/invar-36-alloy-36-astm-f1684-low-expansion-alloy\\\/\",\"url\":\"https:\\\/\\\/www.defencemetal.com\\\/index.php\\\/2025\\\/06\\\/01\\\/invar-36-alloy-36-astm-f1684-low-expansion-alloy\\\/\",\"name\":\"Invar 36 (Alloy 36 \\\/ 1.3912) \u2014 ASTM F1684 Low Expansion Alloy - Defence Metal\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.defencemetal.com\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/www.defencemetal.com\\\/index.php\\\/2025\\\/06\\\/01\\\/invar-36-alloy-36-astm-f1684-low-expansion-alloy\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/www.defencemetal.com\\\/index.php\\\/2025\\\/06\\\/01\\\/invar-36-alloy-36-astm-f1684-low-expansion-alloy\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.defencemetal.com\\\/wp-content\\\/uploads\\\/2025\\\/06\\\/Invar36-3-scaled-e1767438600863.avif\",\"datePublished\":\"2025-06-01T19:46:23+00:00\",\"dateModified\":\"2026-09-17T20:08:19+00:00\",\"description\":\"Invar 36 (FeNi36 \\\/ Alloy 36) low thermal expansion alloy: composition, mechanical properties, AMS and ASTM standards, and precision, aerospace and optical\u2026\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/www.defencemetal.com\\\/index.php\\\/2025\\\/06\\\/01\\\/invar-36-alloy-36-astm-f1684-low-expansion-alloy\\\/#breadcrumb\"},\"inLanguage\":\"tr\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/www.defencemetal.com\\\/index.php\\\/2025\\\/06\\\/01\\\/invar-36-alloy-36-astm-f1684-low-expansion-alloy\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"tr\",\"@id\":\"https:\\\/\\\/www.defencemetal.com\\\/index.php\\\/2025\\\/06\\\/01\\\/invar-36-alloy-36-astm-f1684-low-expansion-alloy\\\/#primaryimage\",\"url\":\"https:\\\/\\\/www.defencemetal.com\\\/wp-content\\\/uploads\\\/2025\\\/06\\\/Invar36-3-scaled-e1767438600863.avif\",\"contentUrl\":\"https:\\\/\\\/www.defencemetal.com\\\/wp-content\\\/uploads\\\/2025\\\/06\\\/Invar36-3-scaled-e1767438600863.avif\",\"width\":2558,\"height\":1634,\"caption\":\"Invar 36 nikel ala\u015f\u0131m \u2014 1.3912 \\\/ UNS K93600\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/www.defencemetal.com\\\/index.php\\\/2025\\\/06\\\/01\\\/invar-36-alloy-36-astm-f1684-low-expansion-alloy\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Anasayfa\",\"item\":\"https:\\\/\\\/www.defencemetal.com\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Invar 36 (Alloy 36 \\\/ 1.3912) \u2014 ASTM F1684 Low Expansion Alloy\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/www.defencemetal.com\\\/#website\",\"url\":\"https:\\\/\\\/www.defencemetal.com\\\/\",\"name\":\"Defence Metal\",\"description\":\"for better produce !\",\"publisher\":{\"@id\":\"https:\\\/\\\/www.defencemetal.com\\\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/www.defencemetal.com\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"tr\"},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/www.defencemetal.com\\\/#organization\",\"name\":\"Defence Metal\",\"url\":\"https:\\\/\\\/www.defencemetal.com\\\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"tr\",\"@id\":\"https:\\\/\\\/www.defencemetal.com\\\/#\\\/schema\\\/logo\\\/image\\\/\",\"url\":\"https:\\\/\\\/www.defencemetal.com\\\/wp-content\\\/uploads\\\/2024\\\/12\\\/cropped-logopngson.png\",\"contentUrl\":\"https:\\\/\\\/www.defencemetal.com\\\/wp-content\\\/uploads\\\/2024\\\/12\\\/cropped-logopngson.png\",\"width\":3846,\"height\":649,\"caption\":\"Defence Metal\"},\"image\":{\"@id\":\"https:\\\/\\\/www.defencemetal.com\\\/#\\\/schema\\\/logo\\\/image\\\/\"},\"sameAs\":[\"http:\\\/\\\/www.linkedin.com\\\/company\\\/defencemetal\"],\"description\":\"Havac\u0131l\u0131k, savunma, enerji ve makine sekt\u00f6rleri i\u00e7in paslanmaz \u00e7elik, nikel ala\u015f\u0131mlar\u0131, titanyum, al\u00fcminyum ve ala\u015f\u0131ml\u0131 \u00e7elik tedarik eden \u00f6zel ala\u015f\u0131m tedarik\u00e7isi.\",\"email\":\"info@defencemetal.com\",\"telephone\":\"+90 216 709 74 41\",\"legalName\":\"Defence Metal\",\"address\":{\"@type\":\"PostalAddress\",\"streetAddress\":\"Cevizli Mah. Mustafa Kemal Cad. Hukuk\u00e7ular Towers A Blok No:66A \u0130\u00e7 Kap\u0131 No:111\",\"addressLocality\":\"Kartal\",\"addressRegion\":\"\u0130stanbul\",\"postalCode\":\"34865\",\"addressCountry\":\"TR\"},\"contactPoint\":{\"@type\":\"ContactPoint\",\"contactType\":\"sales\",\"telephone\":\"+90 216 709 74 41\",\"email\":\"info@defencemetal.com\",\"areaServed\":\"TR\",\"availableLanguage\":[\"Turkish\",\"English\"]}},{\"@type\":\"Person\",\"@id\":\"https:\\\/\\\/www.defencemetal.com\\\/#\\\/schema\\\/person\\\/94280a98e3bea4aa8b76811f913b167a\",\"name\":\"Defence Metal\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"tr\",\"@id\":\"https:\\\/\\\/www.defencemetal.com\\\/wp-content\\\/litespeed\\\/avatar\\\/d36320f98f6cf76cbd3866cdf50d95f3.jpg?ver=1790799820\",\"url\":\"https:\\\/\\\/www.defencemetal.com\\\/wp-content\\\/litespeed\\\/avatar\\\/d36320f98f6cf76cbd3866cdf50d95f3.jpg?ver=1790799820\",\"contentUrl\":\"https:\\\/\\\/www.defencemetal.com\\\/wp-content\\\/litespeed\\\/avatar\\\/d36320f98f6cf76cbd3866cdf50d95f3.jpg?ver=1790799820\",\"caption\":\"Defence Metal\"},\"sameAs\":[\"https:\\\/\\\/www.defencemetal.com\"]}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Invar 36 (Alloy 36 \/ 1.3912) \u2014 ASTM F1684 Low Expansion Alloy - Defence Metal","description":"Invar 36 (FeNi36 \/ Alloy 36) low thermal expansion alloy: composition, mechanical properties, AMS and ASTM standards, and precision, aerospace and optical\u2026","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.defencemetal.com\/index.php\/2025\/06\/01\/invar-36-alloy-36-astm-f1684-low-expansion-alloy\/","og_locale":"tr_TR","og_type":"article","og_title":"Invar 36 (Alloy 36 \/ 1.3912) \u2014 ASTM F1684 Low Expansion Alloy - Defence Metal","og_description":"Invar 36 (FeNi36 \/ Alloy 36) low thermal expansion alloy: composition, mechanical properties, AMS and ASTM standards, and precision, aerospace and optical\u2026","og_url":"https:\/\/www.defencemetal.com\/index.php\/2025\/06\/01\/invar-36-alloy-36-astm-f1684-low-expansion-alloy\/","og_site_name":"Defence Metal","article_published_time":"2025-06-01T19:46:23+00:00","article_modified_time":"2026-09-17T20:08:19+00:00","og_image":[{"width":2558,"height":1634,"url":"https:\/\/www.defencemetal.com\/wp-content\/uploads\/2025\/06\/Invar36-3-scaled-e1767438600863.avif","type":"image\/jpeg"}],"author":"Defence Metal","twitter_card":"summary_large_image","twitter_misc":{"Yazan:":"Defence Metal","Tahmini okuma s\u00fcresi":"4 dakika"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/www.defencemetal.com\/index.php\/2025\/06\/01\/invar-36-alloy-36-astm-f1684-low-expansion-alloy\/#article","isPartOf":{"@id":"https:\/\/www.defencemetal.com\/index.php\/2025\/06\/01\/invar-36-alloy-36-astm-f1684-low-expansion-alloy\/"},"author":{"name":"Defence Metal","@id":"https:\/\/www.defencemetal.com\/#\/schema\/person\/94280a98e3bea4aa8b76811f913b167a"},"headline":"Invar 36 (Alloy 36 \/ 1.3912) \u2014 ASTM F1684 Low Expansion Alloy","datePublished":"2025-06-01T19:46:23+00:00","dateModified":"2026-09-17T20:08:19+00:00","mainEntityOfPage":{"@id":"https:\/\/www.defencemetal.com\/index.php\/2025\/06\/01\/invar-36-alloy-36-astm-f1684-low-expansion-alloy\/"},"wordCount":734,"commentCount":0,"publisher":{"@id":"https:\/\/www.defencemetal.com\/#organization"},"image":{"@id":"https:\/\/www.defencemetal.com\/index.php\/2025\/06\/01\/invar-36-alloy-36-astm-f1684-low-expansion-alloy\/#primaryimage"},"thumbnailUrl":"https:\/\/www.defencemetal.com\/wp-content\/uploads\/2025\/06\/Invar36-3-scaled-e1767438600863.avif","articleSection":["Articles"],"inLanguage":"tr","potentialAction":[{"@type":"CommentAction","name":"Comment","target":["https:\/\/www.defencemetal.com\/index.php\/2025\/06\/01\/invar-36-alloy-36-astm-f1684-low-expansion-alloy\/#respond"]}]},{"@type":"WebPage","@id":"https:\/\/www.defencemetal.com\/index.php\/2025\/06\/01\/invar-36-alloy-36-astm-f1684-low-expansion-alloy\/","url":"https:\/\/www.defencemetal.com\/index.php\/2025\/06\/01\/invar-36-alloy-36-astm-f1684-low-expansion-alloy\/","name":"Invar 36 (Alloy 36 \/ 1.3912) \u2014 ASTM F1684 Low Expansion Alloy - Defence Metal","isPartOf":{"@id":"https:\/\/www.defencemetal.com\/#website"},"primaryImageOfPage":{"@id":"https:\/\/www.defencemetal.com\/index.php\/2025\/06\/01\/invar-36-alloy-36-astm-f1684-low-expansion-alloy\/#primaryimage"},"image":{"@id":"https:\/\/www.defencemetal.com\/index.php\/2025\/06\/01\/invar-36-alloy-36-astm-f1684-low-expansion-alloy\/#primaryimage"},"thumbnailUrl":"https:\/\/www.defencemetal.com\/wp-content\/uploads\/2025\/06\/Invar36-3-scaled-e1767438600863.avif","datePublished":"2025-06-01T19:46:23+00:00","dateModified":"2026-09-17T20:08:19+00:00","description":"Invar 36 (FeNi36 \/ Alloy 36) low thermal expansion alloy: composition, mechanical properties, AMS and ASTM standards, and precision, aerospace and optical\u2026","breadcrumb":{"@id":"https:\/\/www.defencemetal.com\/index.php\/2025\/06\/01\/invar-36-alloy-36-astm-f1684-low-expansion-alloy\/#breadcrumb"},"inLanguage":"tr","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.defencemetal.com\/index.php\/2025\/06\/01\/invar-36-alloy-36-astm-f1684-low-expansion-alloy\/"]}]},{"@type":"ImageObject","inLanguage":"tr","@id":"https:\/\/www.defencemetal.com\/index.php\/2025\/06\/01\/invar-36-alloy-36-astm-f1684-low-expansion-alloy\/#primaryimage","url":"https:\/\/www.defencemetal.com\/wp-content\/uploads\/2025\/06\/Invar36-3-scaled-e1767438600863.avif","contentUrl":"https:\/\/www.defencemetal.com\/wp-content\/uploads\/2025\/06\/Invar36-3-scaled-e1767438600863.avif","width":2558,"height":1634,"caption":"Invar 36 nikel ala\u015f\u0131m \u2014 1.3912 \/ UNS K93600"},{"@type":"BreadcrumbList","@id":"https:\/\/www.defencemetal.com\/index.php\/2025\/06\/01\/invar-36-alloy-36-astm-f1684-low-expansion-alloy\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Anasayfa","item":"https:\/\/www.defencemetal.com\/"},{"@type":"ListItem","position":2,"name":"Invar 36 (Alloy 36 \/ 1.3912) \u2014 ASTM F1684 Low Expansion Alloy"}]},{"@type":"WebSite","@id":"https:\/\/www.defencemetal.com\/#website","url":"https:\/\/www.defencemetal.com\/","name":"Defence Metal","description":"for better produce !","publisher":{"@id":"https:\/\/www.defencemetal.com\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.defencemetal.com\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"tr"},{"@type":"Organization","@id":"https:\/\/www.defencemetal.com\/#organization","name":"Defence Metal","url":"https:\/\/www.defencemetal.com\/","logo":{"@type":"ImageObject","inLanguage":"tr","@id":"https:\/\/www.defencemetal.com\/#\/schema\/logo\/image\/","url":"https:\/\/www.defencemetal.com\/wp-content\/uploads\/2024\/12\/cropped-logopngson.png","contentUrl":"https:\/\/www.defencemetal.com\/wp-content\/uploads\/2024\/12\/cropped-logopngson.png","width":3846,"height":649,"caption":"Defence Metal"},"image":{"@id":"https:\/\/www.defencemetal.com\/#\/schema\/logo\/image\/"},"sameAs":["http:\/\/www.linkedin.com\/company\/defencemetal"],"description":"Havac\u0131l\u0131k, savunma, enerji ve makine sekt\u00f6rleri i\u00e7in paslanmaz \u00e7elik, nikel ala\u015f\u0131mlar\u0131, titanyum, al\u00fcminyum ve ala\u015f\u0131ml\u0131 \u00e7elik tedarik eden \u00f6zel ala\u015f\u0131m tedarik\u00e7isi.","email":"info@defencemetal.com","telephone":"+90 216 709 74 41","legalName":"Defence Metal","address":{"@type":"PostalAddress","streetAddress":"Cevizli Mah. Mustafa Kemal Cad. Hukuk\u00e7ular Towers A Blok No:66A \u0130\u00e7 Kap\u0131 No:111","addressLocality":"Kartal","addressRegion":"\u0130stanbul","postalCode":"34865","addressCountry":"TR"},"contactPoint":{"@type":"ContactPoint","contactType":"sales","telephone":"+90 216 709 74 41","email":"info@defencemetal.com","areaServed":"TR","availableLanguage":["Turkish","English"]}},{"@type":"Person","@id":"https:\/\/www.defencemetal.com\/#\/schema\/person\/94280a98e3bea4aa8b76811f913b167a","name":"Defence Metal","image":{"@type":"ImageObject","inLanguage":"tr","@id":"https:\/\/www.defencemetal.com\/wp-content\/litespeed\/avatar\/d36320f98f6cf76cbd3866cdf50d95f3.jpg?ver=1790799820","url":"https:\/\/www.defencemetal.com\/wp-content\/litespeed\/avatar\/d36320f98f6cf76cbd3866cdf50d95f3.jpg?ver=1790799820","contentUrl":"https:\/\/www.defencemetal.com\/wp-content\/litespeed\/avatar\/d36320f98f6cf76cbd3866cdf50d95f3.jpg?ver=1790799820","caption":"Defence Metal"},"sameAs":["https:\/\/www.defencemetal.com"]}]}},"_links":{"self":[{"href":"https:\/\/www.defencemetal.com\/index.php\/wp-json\/wp\/v2\/posts\/4083","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.defencemetal.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.defencemetal.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.defencemetal.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.defencemetal.com\/index.php\/wp-json\/wp\/v2\/comments?post=4083"}],"version-history":[{"count":2,"href":"https:\/\/www.defencemetal.com\/index.php\/wp-json\/wp\/v2\/posts\/4083\/revisions"}],"predecessor-version":[{"id":4171,"href":"https:\/\/www.defencemetal.com\/index.php\/wp-json\/wp\/v2\/posts\/4083\/revisions\/4171"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.defencemetal.com\/index.php\/wp-json\/wp\/v2\/media\/2174"}],"wp:attachment":[{"href":"https:\/\/www.defencemetal.com\/index.php\/wp-json\/wp\/v2\/media?parent=4083"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.defencemetal.com\/index.php\/wp-json\/wp\/v2\/categories?post=4083"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.defencemetal.com\/index.php\/wp-json\/wp\/v2\/tags?post=4083"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}