{"id":2298,"date":"2026-01-09T12:29:04","date_gmt":"2026-01-09T11:29:04","guid":{"rendered":"https:\/\/www.nickelcasting.com\/?page_id=2298"},"modified":"2026-03-28T15:28:17","modified_gmt":"2026-03-28T14:28:17","slug":"invar-metal-alloys","status":"publish","type":"page","link":"https:\/\/www.nickelcasting.com\/fr\/alliages-de-nickel\/invar-metal-alloys\/","title":{"rendered":"Alliages m\u00e9talliques Invar"},"content":{"rendered":"
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\n Accueil<\/a> \n \/<\/span> \n Alliages de nickel<\/a>\n \/<\/span> \n Invar \/ Alliages \u00e0 dilatation contr\u00f4l\u00e9e\n <\/div>\n\n
\n

Invar\u00ae \/ Alliages \u00e0 dilatation contr\u00f4l\u00e9e<\/h1>\n

\n Famille sp\u00e9cialis\u00e9e d'alliages nickel-fer con\u00e7us pour avoir un coefficient de dilatation thermique (CTE) exceptionnellement bas ou contr\u00f4l\u00e9. Essentiel pour les applications de pr\u00e9cision o\u00f9 la stabilit\u00e9 dimensionnelle est critique.\n <\/p>\n <\/div>\n\n

Grades Invar disponibles<\/div>\n \n
\n \n
\n
\n \"Alliage\n <\/div>\n
\n

Invar 36<\/h3>\n

\n Alliage nickel-fer 36% pr\u00e9sentant le plus faible coefficient de dilatation thermique de tous les m\u00e9taux disponibles dans le commerce (environ 1\/10\u00e8me de celui de l'acier au carbone) \u00e0 des temp\u00e9ratures cryog\u00e9niques allant jusqu'\u00e0 400\u00b0F.\n <\/p>\n

\n CTE le plus bas<\/span>\n Outillage pour l'a\u00e9rospatiale<\/span>\n Tuyauterie cryog\u00e9nique<\/span>\n <\/div>\n Voir les d\u00e9tails Invar 36<\/a>\n <\/div>\n <\/div>\n\n
\n
\n \"Invar\n <\/div>\n
\n

Invar 42<\/h3>\n

\n Alliage nickel-fer 42% con\u00e7u avec un taux de dilatation thermique constant qui correspond aux puces de silicium, au verre et aux c\u00e9ramiques d'alumine. Essentiel pour l'emballage \u00e9lectronique et le scellement herm\u00e9tique.\n <\/p>\n

\n Correspondance avec le silicium<\/span>\n Cadres \u00e9lectroniques<\/span>\n Scellement du verre<\/span>\n <\/div>\n Voir les d\u00e9tails Invar 42<\/a>\n <\/div>\n <\/div>\n\n <\/div>\n\n
\n

Pourquoi l'expansion contr\u00f4l\u00e9e est-elle importante ?<\/h3>\n

\n La plupart des m\u00e9taux se dilatent consid\u00e9rablement lorsqu'ils sont chauff\u00e9s. Dans les instruments de pr\u00e9cision, cette dilatation entra\u00eene un d\u00e9salignement. Dans le domaine de l'\u00e9lectronique, le d\u00e9calage entre le cadre m\u00e9tallique d'une puce et la puce de silicium provoque des fissures.\n <\/p>\n

\n Alliages Invar<\/strong> r\u00e9soudre ce probl\u00e8me. Invar 36<\/a><\/strong> ne se dilate pas du tout \u00e0 temp\u00e9rature ambiante. Invar 42<\/a><\/strong> se dilate \u00e0 un rythme sp\u00e9cifique et contr\u00f4l\u00e9 pour se d\u00e9placer exactement en synchronisation avec les composants \u00e9lectroniques.\n <\/p>\n <\/div>\n\n

Comparaison des classes : Expansion thermique<\/div>\n
\n \n \n \n \n \n \n
Grade de l'alliage<\/th>\n Teneur en nickel<\/th>\n Caract\u00e9ristique d'expansion<\/th>\n Application primaire<\/th>\n <\/tr>\n <\/thead>\n
Invar 36<\/strong><\/td>\n 36%<\/td>\n Proche de z\u00e9ro<\/strong> jusqu'\u00e0 400\u00b0F (200\u00b0C).<\/td>\n Moules composites, positionnement au laser, tuyauterie GNL.<\/td>\n <\/tr>\n
Invar 42<\/strong><\/td>\n 42%<\/td>\n Contr\u00f4l\u00e9<\/strong> expansion pour correspondre \u00e0 Silicium\/C\u00e9ramique.<\/td>\n Cadres de plomb, joints herm\u00e9tiques verre-m\u00e9tal.<\/td>\n <\/tr>\n <\/tbody>\n <\/table>\n <\/div>\n\n
Disponible Formulaires de produits<\/a><\/div>\n

\n Parce que la stabilit\u00e9 dimensionnelle est essentielle dans des industries tr\u00e8s diff\u00e9rentes - des moules composites massifs pour l'a\u00e9rospatiale aux puces \u00e9lectroniques microscopiques - nous fournissons des alliages Invar dans une gamme tr\u00e8s sp\u00e9cialis\u00e9e de formes de produits :\n <\/p>\n\n

\n \n
\ud83d\udd32<\/div>\n
\n

Plaques et t\u00f4les d'outillage<\/h4>\n

La plaque lourde Invar 36 est la norme industrielle pour l'usinage de moules de stratification massifs utilis\u00e9s dans la fabrication de composites de fibre de carbone pour l'a\u00e9rospatiale.<\/p>\n <\/div>\n <\/a>\n\n \n

\ud83d\ude87<\/div>\n
\n

Tubes et tuyaux cryog\u00e9niques<\/h4>\n

Les tuyaux sans soudure sont largement utilis\u00e9s dans le transport et le stockage du GNL (gaz naturel liqu\u00e9fi\u00e9), o\u00f9 le froid extr\u00eame provoque la contraction et la rupture de l'acier standard.<\/p>\n <\/div>\n <\/a>\n\n \n

\ud83e\uddf5<\/div>\n
\n

Bandes et fils de pr\u00e9cision<\/h4>\n

Bandes et fils ultra-minces en Invar 42 con\u00e7us pour l'estampage de grilles de connexion \u00e9lectroniques, de thermostats bim\u00e9talliques et de joints herm\u00e9tiques verre-m\u00e9tal.<\/p>\n <\/div>\n <\/a>\n\n \n

\ud83d\udccf<\/div>\n
\n

Bar & Rod<\/h4>\n

Barres rondes fournies pour l'usinage CNC de composants de bo\u00eetiers laser de pr\u00e9cision, de bases d'instruments optiques et de jauges de r\u00e9f\u00e9rence dimensionnelles.<\/p>\n <\/div>\n <\/a>\n\n \n

\ud83e\ude88<\/div>\n
\n

Raccords de tuyauterie<\/h4>\n

Coudes, t\u00e9s et r\u00e9ducteurs pour compl\u00e9ter les r\u00e9seaux de tuyauterie dimensionnellement stables dans les applications cryog\u00e9niques et chimiques sp\u00e9cialis\u00e9es.<\/p>\n <\/div>\n <\/a>\n\n \n

\u2b55<\/div>\n
\n

Brides<\/h4>\n

Brides \u00e0 collet soud\u00e9 et brides aveugles \u00e0 faible dilatation con\u00e7ues pour maintenir un joint s\u00fbr et \u00e9tanche lors de chutes de temp\u00e9rature extr\u00eames dans les syst\u00e8mes GNL.<\/p>\n <\/div>\n <\/a>\n <\/div>\n

Industries cl\u00e9s<\/div>\n
\n
\n \ud83d\udce1<\/span>\n

\u00c9lectronique<\/h4>\n

Cadres de connexion des circuits int\u00e9gr\u00e9s et emballage des semi-conducteurs.<\/p>\n <\/div>\n

\n \u2708\ufe0f<\/span>\n

Composites a\u00e9rospatiaux<\/h4>\n

Moules de stratification pour les pi\u00e8ces en fibre de carbone (Invar 36 correspond au CTE de la fibre de carbone).<\/p>\n <\/div>\n

\n \u2744\ufe0f<\/span>\n

Cryog\u00e9nie et GNL<\/h4>\n

Tuyauterie pour le gaz naturel liqu\u00e9fi\u00e9 (-162\u00b0C) n\u00e9cessitant une stabilit\u00e9.<\/p>\n <\/div>\n <\/div>\n\n

\n

Besoin d'un alliage de pr\u00e9cision ?<\/h2>\n

Nous stockons l'Invar 36 et 42 en plaques, feuilles et barres rondes. Des services de d\u00e9coupe sur mesure sont disponibles pour les t\u00f4les d'outillage.<\/p>\n Demande de devis<\/a>\n <\/div>\n\n<\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"

Home \/ Nickel Alloys \/ Invar \/ Controlled Expansion Alloys Invar\u00ae \/ Controlled Expansion Alloys A specialized family of Nickel-Iron alloys engineered to have an exceptionally low or controlled coefficient of thermal expansion (CTE). Essential for precision applications where dimensional stability is critical. Available Invar Grades Invar 36 A 36% nickel-iron alloy with the lowest […]<\/p>","protected":false},"author":1,"featured_media":0,"parent":1831,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"elementor_theme","meta":{"_uag_custom_page_level_css":"","site-sidebar-layout":"no-sidebar","site-content-layout":"page-builder","ast-site-content-layout":"full-width-container","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":"disabled","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":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","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":""},"class_list":["post-2298","page","type-page","status-publish","hentry"],"spectra_custom_meta":{"_edit_lock":["1774708116:1"],"_edit_last":["1"],"rank_math_internal_links_processed":["1"],"rank_math_seo_score":["69"],"rank_math_description":["Invar metal alloys with low thermal expansion, ideal for precision instruments and aerospace applications."],"rank_math_focus_keyword":["invar metal alloys"],"_wp_page_template":["elementor_theme"],"site-sidebar-layout":["no-sidebar"],"ast-site-content-layout":["full-width-container"],"site-content-style":["default"],"site-sidebar-style":["default"],"theme-transparent-header-meta":["default"],"_elementor_edit_mode":["builder"],"_astra_content_layout_flag":["disabled"],"ast-title-bar-display":["disabled"],"ast-featured-img":["disabled"],"site-content-layout":["page-builder"],"_elementor_template_type":["wp-page"],"_elementor_version":["3.33.2"],"_elementor_pro_version":["3.32.3"],"_elementor_data":["[{\"id\":\"1bba4c3\",\"elType\":\"container\",\"settings\":{\"flex_direction\":\"column\",\"display_condition_list\":[{\"display_condition_login_status\":\"subscriber\",\"_id\":\"f078fbf\"}]},\"elements\":[{\"id\":\"a409109\",\"elType\":\"widget\",\"settings\":{\"html\":\"\\n\\n

\\n\\n
\\n Home<\\\/a> \\n \\\/<\\\/span> \\n Nickel Alloys<\\\/a>\\n \\\/<\\\/span> \\n Invar \\\/ Controlled Expansion Alloys\\n <\\\/div>\\n\\n
\\n

Invar\\u00ae \\\/ Controlled Expansion Alloys<\\\/h1>\\n

\\n A specialized family of Nickel-Iron alloys engineered to have an exceptionally low or controlled coefficient of thermal expansion (CTE). Essential for precision applications where dimensional stability is critical.\\n <\\\/p>\\n <\\\/div>\\n\\n

Available Invar Grades<\\\/div>\\n \\n
\\n \\n
\\n
\\n \\\"Invar\\n <\\\/div>\\n
\\n

Invar 36<\\\/h3>\\n

\\n A 36% nickel-iron alloy with the lowest coefficient of thermal expansion of any commercially available metal (approx. 1\\\/10th that of carbon steel) from cryogenic temperatures up to 400\\u00b0F.\\n <\\\/p>\\n

\\n Lowest CTE<\\\/span>\\n Aerospace Tooling<\\\/span>\\n Cryogenic Piping<\\\/span>\\n <\\\/div>\\n View Invar 36 Details<\\\/a>\\n <\\\/div>\\n <\\\/div>\\n\\n
\\n
\\n \\\"Invar\\n <\\\/div>\\n
\\n

Invar 42<\\\/h3>\\n

\\n A 42% nickel-iron alloy designed with a constant rate of thermal expansion that matches silicon chips, glass, and alumina ceramics. Critical for electronic packaging and hermetic sealing.\\n <\\\/p>\\n

\\n Matches Silicon<\\\/span>\\n Electronic Frames<\\\/span>\\n Glass Sealing<\\\/span>\\n <\\\/div>\\n View Invar 42 Details<\\\/a>\\n <\\\/div>\\n <\\\/div>\\n\\n <\\\/div>\\n\\n
\\n

Why Controlled Expansion Matters?<\\\/h3>\\n

\\n Most metals expand significantly when heated. In precision instruments, this expansion causes misalignment. In electronics, the mismatch between a metal chip frame and the silicon chip causes cracking.\\n <\\\/p>\\n

\\n Invar Alloys<\\\/strong> solve this. Invar 36<\\\/strong> essentially does not expand at all near room temperature. Invar 42<\\\/strong> expands at a specific, controlled rate to move exactly in sync with electronic components.\\n <\\\/p>\\n <\\\/div>\\n\\n

Grade Comparison: Thermal Expansion<\\\/div>\\n
\\n \\n \\n \\n \\n \\n \\n
Alloy Grade<\\\/th>\\n Nickel Content<\\\/th>\\n Expansion Characteristic<\\\/th>\\n Primary Application<\\\/th>\\n <\\\/tr>\\n <\\\/thead>\\n
Invar 36<\\\/strong><\\\/td>\\n 36%<\\\/td>\\n Near Zero<\\\/strong> expansion up to 400\\u00b0F (200\\u00b0C).<\\\/td>\\n Composite molds, laser positioning, LNG piping.<\\\/td>\\n <\\\/tr>\\n
Invar 42<\\\/strong><\\\/td>\\n 42%<\\\/td>\\n Controlled<\\\/strong> expansion to match Silicon\\\/Ceramic.<\\\/td>\\n Lead frames, hermetic glass-to-metal seals.<\\\/td>\\n <\\\/tr>\\n <\\\/tbody>\\n <\\\/table>\\n <\\\/div>\\n\\n
Available Product Forms<\\\/div>\\n

\\n Because dimensional stability is critical across vastly different industries\\u2014from massive aerospace composite molds to microscopic electronic chips\\u2014we supply Invar alloys in a highly specialized range of product forms:\\n <\\\/p>\\n\\n

\\n \\n
\\ud83d\\udd32<\\\/div>\\n
\\n

Tooling Plate & Sheet<\\\/h4>\\n

Heavy Invar 36 plate is the industry standard for machining massive lay-up molds used in manufacturing aerospace carbon fiber composites.<\\\/p>\\n <\\\/div>\\n <\\\/a>\\n\\n \\n

\\ud83d\\ude87<\\\/div>\\n
\\n

Cryogenic Pipe & Tube<\\\/h4>\\n

Seamless piping used extensively in LNG (Liquefied Natural Gas) transport and storage, where extreme cold causes standard steel to contract and fail.<\\\/p>\\n <\\\/div>\\n <\\\/a>\\n\\n \\n

\\ud83e\\uddf5<\\\/div>\\n
\\n

Precision Strip & Wire<\\\/h4>\\n

Ultra-thin Invar 42 strip and wire engineered for stamping electronic lead frames, bimetallic thermostats, and glass-to-metal hermetic seals.<\\\/p>\\n <\\\/div>\\n <\\\/a>\\n\\n \\n

\\ud83d\\udccf<\\\/div>\\n
\\n

Bar & Rod<\\\/h4>\\n

Round bar stock supplied for CNC machining precision laser housing components, optical instrument bases, and dimensional reference gauges.<\\\/p>\\n <\\\/div>\\n <\\\/a>\\n\\n \\n

\\ud83e\\ude88<\\\/div>\\n
\\n

Pipe Fittings<\\\/h4>\\n

Elbows, tees, and reducers to complete dimensionally stable piping networks in cryogenic and specialized chemical applications.<\\\/p>\\n <\\\/div>\\n <\\\/a>\\n\\n \\n

\\u2b55<\\\/div>\\n
\\n

Flanges<\\\/h4>\\n

Low-expansion weld neck and blind flanges designed to maintain a secure, leak-proof seal during extreme temperature drops in LNG systems.<\\\/p>\\n <\\\/div>\\n <\\\/a>\\n <\\\/div>\\n

Key Industries<\\\/div>\\n
\\n
\\n \\ud83d\\udce1<\\\/span>\\n

Electronics<\\\/h4>\\n

Integrated circuit lead frames and semiconductor packaging.<\\\/p>\\n <\\\/div>\\n

\\n \\u2708\\ufe0f<\\\/span>\\n

Aerospace Composites<\\\/h4>\\n

Lay-up molds for carbon fiber parts (Invar 36 matches carbon fiber CTE).<\\\/p>\\n <\\\/div>\\n

\\n \\u2744\\ufe0f<\\\/span>\\n

Cryogenics & LNG<\\\/h4>\\n

Piping for Liquefied Natural Gas (-162\\u00b0C) requiring stability.<\\\/p>\\n <\\\/div>\\n <\\\/div>\\n\\n

\\n

Need Precision Alloy Material?<\\\/h2>\\n

We stock Invar 36 and 42 in plate, sheet, and round bar. Cut-to-size services available for tooling plate.<\\\/p>\\n Request a Quote<\\\/a>\\n <\\\/div>\\n\\n<\\\/div>\",\"display_condition_list\":[{\"display_condition_login_status\":\"subscriber\",\"_id\":\"f84c8e8\"}]},\"elements\":[],\"widgetType\":\"html\"}],\"isInner\":false}]"],"rank_math_og_content_image":["a:2:{s:5:\"check\";s:32:\"ccff42089d4cac012e51f9338cc93e4b\";s:6:\"images\";a:1:{i:0;i:2301;}}"],"ilj_blacklistdefinition":["a:0:{}"],"ilj_linkdefinition":["a:1:{i:0;s:18:\"Invar Metal Alloys\";}"],"astra-migrate-meta-layouts":["set"],"_elementor_page_settings":["a:0:{}"],"_elementor_controls_usage":["a:2:{s:4:\"html\";a:3:{s:5:\"count\";i:1;s:15:\"control_percent\";i:0;s:8:\"controls\";a:2:{s:7:\"content\";a:1:{s:13:\"section_title\";a:1:{s:4:\"html\";i:1;}}s:8:\"advanced\";a:1:{s:26:\"display_conditions_section\";a:1:{s:22:\"display_condition_list\";i:1;}}}}s:9:\"container\";a:3:{s:5:\"count\";i:1;s:15:\"control_percent\";i:0;s:8:\"controls\";a:2:{s:6:\"layout\";a:1:{s:24:\"section_layout_container\";a:1:{s:14:\"flex_direction\";i:1;}}s:8:\"advanced\";a:1:{s:26:\"display_conditions_section\";a:1:{s:22:\"display_condition_list\";i:1;}}}}}"],"_uag_page_assets":["a:9:{s:3:\"css\";s:263:\".uag-blocks-common-selector{z-index:var(--z-index-desktop) !important}@media (max-width: 976px){.uag-blocks-common-selector{z-index:var(--z-index-tablet) !important}}@media (max-width: 767px){.uag-blocks-common-selector{z-index:var(--z-index-mobile) !important}}\n\";s:2:\"js\";s:0:\"\";s:18:\"current_block_list\";a:8:{i:0;s:11:\"core\/search\";i:1;s:10:\"core\/group\";i:2;s:12:\"core\/heading\";i:3;s:17:\"core\/latest-posts\";i:4;s:20:\"core\/latest-comments\";i:5;s:13:\"core\/archives\";i:6;s:15:\"core\/categories\";i:7;s:10:\"core\/image\";}s:8:\"uag_flag\";b:0;s:11:\"uag_version\";s:10:\"1776419131\";s:6:\"gfonts\";a:0:{}s:10:\"gfonts_url\";s:0:\"\";s:12:\"gfonts_files\";a:0:{}s:14:\"uag_faq_layout\";b:0;}"],"_uag_css_file_name":["uag-css-2298.css"],"_elementor_page_assets":["a:1:{s:7:\"scripts\";a:1:{i:0;s:18:\"elementor-frontend\";}}"],"_elementor_css":["a:6:{s:4:\"time\";i:1776528716;s:5:\"fonts\";a:0:{}s:5:\"icons\";a:0:{}s:20:\"dynamic_elements_ids\";a:0:{}s:6:\"status\";s:4:\"file\";i:0;s:0:\"\";}"],"_elementor_element_cache":["{\"timeout\":1776618716,\"value\":{\"content\":\"

\\n\\t\\t\\t\\t\\t
\\n\\t\\t\\t\\t
\\n\\t\\t\\t\\t
\\n\\t\\t\\t\\t\\t\\n\\n
\\n\\n
\\n Home<\\\/a> \\n \\\/<\\\/span> \\n Nickel Alloys<\\\/a>\\n \\\/<\\\/span> \\n Invar \\\/ Controlled Expansion Alloys\\n <\\\/div>\\n\\n
\\n

Invar\\u00ae \\\/ Controlled Expansion Alloys<\\\/h1>\\n

\\n A specialized family of Nickel-Iron alloys engineered to have an exceptionally low or controlled coefficient of thermal expansion (CTE). Essential for precision applications where dimensional stability is critical.\\n <\\\/p>\\n <\\\/div>\\n\\n

Available Invar Grades<\\\/div>\\n \\n
\\n \\n
\\n
\\n \\\"Invar\\n <\\\/div>\\n
\\n

Invar 36<\\\/h3>\\n

\\n A 36% nickel-iron alloy with the lowest coefficient of thermal expansion of any commercially available metal (approx. 1\\\/10th that of carbon steel) from cryogenic temperatures up to 400\\u00b0F.\\n <\\\/p>\\n

\\n Lowest CTE<\\\/span>\\n Aerospace Tooling<\\\/span>\\n Cryogenic Piping<\\\/span>\\n <\\\/div>\\n View Invar 36 Details<\\\/a>\\n <\\\/div>\\n <\\\/div>\\n\\n
\\n
\\n \\\"Invar\\n <\\\/div>\\n
\\n

Invar 42<\\\/h3>\\n

\\n A 42% nickel-iron alloy designed with a constant rate of thermal expansion that matches silicon chips, glass, and alumina ceramics. Critical for electronic packaging and hermetic sealing.\\n <\\\/p>\\n

\\n Matches Silicon<\\\/span>\\n Electronic Frames<\\\/span>\\n Glass Sealing<\\\/span>\\n <\\\/div>\\n View Invar 42 Details<\\\/a>\\n <\\\/div>\\n <\\\/div>\\n\\n <\\\/div>\\n\\n
\\n

Why Controlled Expansion Matters?<\\\/h3>\\n

\\n Most metals expand significantly when heated. In precision instruments, this expansion causes misalignment. In electronics, the mismatch between a metal chip frame and the silicon chip causes cracking.\\n <\\\/p>\\n

\\n Invar Alloys<\\\/strong> solve this. Invar 36<\\\/strong> essentially does not expand at all near room temperature. Invar 42<\\\/strong> expands at a specific, controlled rate to move exactly in sync with electronic components.\\n <\\\/p>\\n <\\\/div>\\n\\n

Grade Comparison: Thermal Expansion<\\\/div>\\n
\\n \\n \\n \\n \\n \\n \\n
Alloy Grade<\\\/th>\\n Nickel Content<\\\/th>\\n Expansion Characteristic<\\\/th>\\n Primary Application<\\\/th>\\n <\\\/tr>\\n <\\\/thead>\\n
Invar 36<\\\/strong><\\\/td>\\n 36%<\\\/td>\\n Near Zero<\\\/strong> expansion up to 400\\u00b0F (200\\u00b0C).<\\\/td>\\n Composite molds, laser positioning, LNG piping.<\\\/td>\\n <\\\/tr>\\n
Invar 42<\\\/strong><\\\/td>\\n 42%<\\\/td>\\n Controlled<\\\/strong> expansion to match Silicon\\\/Ceramic.<\\\/td>\\n Lead frames, hermetic glass-to-metal seals.<\\\/td>\\n <\\\/tr>\\n <\\\/tbody>\\n <\\\/table>\\n <\\\/div>\\n\\n
Available Product Forms<\\\/div>\\n

\\n Because dimensional stability is critical across vastly different industries\\u2014from massive aerospace composite molds to microscopic electronic chips\\u2014we supply Invar alloys in a highly specialized range of product forms:\\n <\\\/p>\\n\\n

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Tooling Plate & Sheet<\\\/h4>\\n

Heavy Invar 36 plate is the industry standard for machining massive lay-up molds used in manufacturing aerospace carbon fiber composites.<\\\/p>\\n <\\\/div>\\n <\\\/a>\\n\\n \\n

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Cryogenic Pipe & Tube<\\\/h4>\\n

Seamless piping used extensively in LNG (Liquefied Natural Gas) transport and storage, where extreme cold causes standard steel to contract and fail.<\\\/p>\\n <\\\/div>\\n <\\\/a>\\n\\n \\n

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Precision Strip & Wire<\\\/h4>\\n

Ultra-thin Invar 42 strip and wire engineered for stamping electronic lead frames, bimetallic thermostats, and glass-to-metal hermetic seals.<\\\/p>\\n <\\\/div>\\n <\\\/a>\\n\\n \\n

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Bar & Rod<\\\/h4>\\n

Round bar stock supplied for CNC machining precision laser housing components, optical instrument bases, and dimensional reference gauges.<\\\/p>\\n <\\\/div>\\n <\\\/a>\\n\\n \\n

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Pipe Fittings<\\\/h4>\\n

Elbows, tees, and reducers to complete dimensionally stable piping networks in cryogenic and specialized chemical applications.<\\\/p>\\n <\\\/div>\\n <\\\/a>\\n\\n \\n

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Flanges<\\\/h4>\\n

Low-expansion weld neck and blind flanges designed to maintain a secure, leak-proof seal during extreme temperature drops in LNG systems.<\\\/p>\\n <\\\/div>\\n <\\\/a>\\n <\\\/div>\\n

Key Industries<\\\/div>\\n
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Electronics<\\\/h4>\\n

Integrated circuit lead frames and semiconductor packaging.<\\\/p>\\n <\\\/div>\\n

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Aerospace Composites<\\\/h4>\\n

Lay-up molds for carbon fiber parts (Invar 36 matches carbon fiber CTE).<\\\/p>\\n <\\\/div>\\n

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Cryogenics & LNG<\\\/h4>\\n

Piping for Liquefied Natural Gas (-162\\u00b0C) requiring stability.<\\\/p>\\n <\\\/div>\\n <\\\/div>\\n\\n

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Need Precision Alloy Material?<\\\/h2>\\n

We stock Invar 36 and 42 in plate, sheet, and round bar. Cut-to-size services available for tooling plate.<\\\/p>\\n Request a Quote<\\\/a>\\n <\\\/div>\\n\\n<\\\/div>\\t\\t\\t\\t<\\\/div>\\n\\t\\t\\t\\t<\\\/div>\\n\\t\\t\\t\\t\\t<\\\/div>\\n\\t\\t\\t\\t<\\\/div>\\n\\t\\t\",\"scripts\":[],\"styles\":[]}}"]},"uagb_featured_image_src":{"full":false,"thumbnail":false,"medium":false,"medium_large":false,"large":false,"1536x1536":false,"2048x2048":false,"trp-custom-language-flag":false},"uagb_author_info":{"display_name":"nickel","author_link":"https:\/\/www.nickelcasting.com\/fr\/author\/nickel\/"},"uagb_comment_info":0,"uagb_excerpt":"Home \/ Nickel Alloys \/ Invar \/ Controlled Expansion Alloys Invar\u00ae \/ Controlled Expansion Alloys A specialized family of Nickel-Iron alloys engineered to have an exceptionally low or controlled coefficient of thermal expansion (CTE). Essential for precision applications where dimensional stability is critical. Available Invar Grades Invar 36 A 36% nickel-iron alloy with the lowest\u2026","_links":{"self":[{"href":"https:\/\/www.nickelcasting.com\/fr\/wp-json\/wp\/v2\/pages\/2298","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.nickelcasting.com\/fr\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.nickelcasting.com\/fr\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.nickelcasting.com\/fr\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.nickelcasting.com\/fr\/wp-json\/wp\/v2\/comments?post=2298"}],"version-history":[{"count":11,"href":"https:\/\/www.nickelcasting.com\/fr\/wp-json\/wp\/v2\/pages\/2298\/revisions"}],"predecessor-version":[{"id":3419,"href":"https:\/\/www.nickelcasting.com\/fr\/wp-json\/wp\/v2\/pages\/2298\/revisions\/3419"}],"up":[{"embeddable":true,"href":"https:\/\/www.nickelcasting.com\/fr\/wp-json\/wp\/v2\/pages\/1831"}],"wp:attachment":[{"href":"https:\/\/www.nickelcasting.com\/fr\/wp-json\/wp\/v2\/media?parent=2298"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}