{"id":2331,"date":"2026-01-09T13:54:14","date_gmt":"2026-01-09T12:54:14","guid":{"rendered":"https:\/\/www.nickelcasting.com\/?page_id=2331"},"modified":"2026-03-28T15:35:49","modified_gmt":"2026-03-28T14:35:49","slug":"kovar","status":"publish","type":"page","link":"https:\/\/www.nickelcasting.com\/pt\/ligas-de-niquel\/kovar\/","title":{"rendered":"Kovar"},"content":{"rendered":"<div data-elementor-type=\"wp-page\" data-elementor-id=\"2331\" class=\"elementor elementor-2331\" data-elementor-post-type=\"page\">\n\t\t\t\t<div class=\"elementor-element elementor-element-3365d6e e-flex e-con-boxed e-con e-parent\" data-id=\"3365d6e\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-6a4cd01 elementor-widget elementor-widget-html\" data-id=\"6a4cd01\" data-element_type=\"widget\" data-widget_type=\"html.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<link rel=\"stylesheet\" href=\"\/zicss\/nickel6.css\">\n\n<div class=\"product-detail-wrapper\">\n\n    <div class=\"breadcrumbs\">\n        <a href=\"\/pt\/\">In\u00edcio<\/a> \n        <span class=\"separator\">\/<\/span> \n        <a href=\"\/pt\/ligas-de-niquel\/\">Ligas de n\u00edquel<\/a>\n        <span class=\"separator\">\/<\/span> \n        Kovar\n    <\/div>\n\n    <div class=\"prod-hero\">\n        <div class=\"prod-image-box\">\n            <img decoding=\"async\" src=\"http:\/\/www.nickelcasting.com\/wp-content\/uploads\/2026\/01\/nickel30.jpg\" alt=\"Liga de veda\u00e7\u00e3o de vidro para metal Kovar\">\n        <\/div>\n        \n        <div class=\"prod-info-box\">\n            <h1>Kovar\u00ae<\/h1>\n            <div class=\"prod-subtitle\">UNS K94610 | W.Nr. 1.3981 | ASTM F15<\/div>\n            \n            <p>\n                O Kovar \u00e9 uma liga de expans\u00e3o controlada de n\u00edquel nominal de 29%, cobalto de 17% e ferro de 54%. \u00c9 amplamente conhecida por ter um coeficiente de expans\u00e3o t\u00e9rmica que se equipara aos vidros borossilicatos (duros) e \u00e0s cer\u00e2micas de alumina, o que a torna a norma da ind\u00fastria para uma veda\u00e7\u00e3o herm\u00e9tica fi\u00e1vel.\n            <\/p>\n\n            <ul class=\"key-specs-list\">\n                <li><strong>Formas comuns:<\/strong> Chapas, tiras, placas, barras, <a href=\"https:\/\/www.nickelcasting.com\/ko\/product-forms\/wire\/\">Fio<\/a>, Tubagem.<\/li>\n                <li><strong>Carater\u00edstica principal:<\/strong> Corresponde ao CTE do vidro borossilicato e da alumina.<\/li>\n                <li><strong>Aplica\u00e7\u00e3o:<\/strong> Vedantes herm\u00e9ticos de alta integridade (estanques ao v\u00e1cuo).<\/li>\n                <li><strong>Qualidade:<\/strong> Dupla fus\u00e3o (VIM-VAR) para microestrutura sem inclus\u00e3o.<\/li>\n            <\/ul>\n\n            <div class=\"action-area\">\n                <a href=\"\/pt\/contacto\/\" class=\"quote-btn\">Pedir um or\u00e7amento<\/a>\n                <a href=\"#\" class=\"download-btn\">Descarregar ficha de dados<\/a>\n            <\/div>\n        <\/div>\n    <\/div>\n\n    <div class=\"section-head\">Porqu\u00ea escolher a Kovar?<\/div>\n    <p>\n        A maioria dos metais expande-se muito mais rapidamente do que o vidro quando aquecido. Se tentar selar um alfinete de cobre num vidro, o vidro estilha\u00e7a-se quando arrefece. <strong>Kovar resolve o problema.<\/strong> A sua curva de dilata\u00e7\u00e3o t\u00e9rmica acompanha perfeitamente os vidros \"duros\" (como o Pyrex) e as cer\u00e2micas de -80\u00b0C a 450\u00b0C, garantindo que a veda\u00e7\u00e3o se mant\u00e9m sem tens\u00f5es e estanque ao v\u00e1cuo durante toda a sua vida \u00fatil.\n    <\/p>\n\n    <div class=\"feature-grid\">\n        <div class=\"feature-col\">\n            <h4>Veda\u00e7\u00e3o herm\u00e9tica<\/h4>\n            <p>Assegura veda\u00e7\u00f5es estanques ao v\u00e1cuo essenciais para tubos de v\u00e1cuo, tubos de raios X e embalagens electr\u00f3nicas militares.<\/p>\n        <\/div>\n        <div class=\"feature-col\">\n            <h4>Estabilidade de fase<\/h4>\n            <p>Controlos qu\u00edmicos precisos asseguram que a liga mant\u00e9m a sua estrutura austen\u00edtica at\u00e9 -80\u00b0C, evitando altera\u00e7\u00f5es de volume que poderiam quebrar as veda\u00e7\u00f5es.<\/p>\n        <\/div>\n        <div class=\"feature-col\">\n            <h4>Microestrutura limpa<\/h4>\n            <p>O nosso Kovar \u00e9 normalmente produzido atrav\u00e9s de refus\u00e3o por arco em v\u00e1cuo (VAR) para minimizar as impurezas, garantindo propriedades uniformes de grava\u00e7\u00e3o e revestimento.<\/p>\n        <\/div>\n    <\/div>\n\n    <div class=\"section-head\">Composi\u00e7\u00e3o qu\u00edmica (%)<\/div>\n    <div class=\"data-table-wrap\">\n        <table class=\"tech-table\">\n            <thead>\n                <tr>\n                    <th>Elemento<\/th>\n                    <th>Conte\u00fado (%)<\/th>\n                <\/tr>\n            <\/thead>\n            <tbody>\n                <tr>\n                    <td><strong>N\u00edquel (Ni)<\/strong><\/td>\n                    <td>29.0<\/td>\n                <\/tr>\n                <tr>\n                    <td><strong>Cobalto (Co)<\/strong><\/td>\n                    <td>17.0<\/td>\n                <\/tr>\n                <tr>\n                    <td><strong>Ferro (Fe)<\/strong><\/td>\n                    <td>Equil\u00edbrio<\/td>\n                <\/tr>\n                <tr>\n                    <td><strong>Carbono (C)<\/strong><\/td>\n                    <td>0,02 max<\/td>\n                <\/tr>\n                <tr>\n                    <td><strong>Mangan\u00eas (Mn)<\/strong><\/td>\n                    <td>0.30<\/td>\n                <\/tr>\n                <tr>\n                    <td><strong>Sil\u00edcio (Si)<\/strong><\/td>\n                    <td>0.20<\/td>\n                <\/tr>\n            <\/tbody>\n        <\/table>\n        <p style=\"font-size:0.85rem; color:#666; margin-top:10px;\">*Nota: A balan\u00e7a espec\u00edfica de N\u00edquel-Cobalto-Iron est\u00e1 calibrada para um controlo preciso da expans\u00e3o.<\/p>\n    <\/div>\n\n    <div class=\"section-head\">Especifica\u00e7\u00f5es padr\u00e3o<\/div>\n    <div class=\"data-table-wrap\">\n        <table class=\"tech-table\">\n            <thead>\n                <tr>\n                    <th width=\"30%\">Forma do produto<\/th>\n                    <th>Normas (ASTM \/ AMS \/ MIL)<\/th>\n                <\/tr>\n            <\/thead>\n            <tbody>\n                <tr>\n                    <td><strong>Barra, var\u00e3o, fio<\/strong><\/td>\n                    <td>ASTM F15, AMS I-23011 Classe 1, MIL-I-23011 Classe 1<\/td>\n                <\/tr>\n                <tr>\n                    <td><strong>Folha, tira, placa<\/strong><\/td>\n                    <td>ASTM F15, AMS I-23011 Classe 1, MIL-I-23011 Classe 1<\/td>\n                <\/tr>\n                <tr>\n                    <td><strong>Tubagem<\/strong><\/td>\n                    <td>ASTM F15<\/td>\n                <\/tr>\n                <tr>\n                    <td><strong>Norma DIN<\/strong><\/td>\n                    <td>DIN 17745, W.Nr. 1.3981<\/td>\n                <\/tr>\n            <\/tbody>\n        <\/table>\n    <\/div>\n\n    \n    <div class=\"section-head\">Formas dispon\u00edveis para Kovar\u00ae (ASTM F15)<\/div>\n    <p style=\"margin-bottom: 25px;\">\n        Para apoiar as rigorosas exig\u00eancias das ind\u00fastrias de semicondutores, aeroespacial e eletr\u00f3nica de alto v\u00e1cuo, fornecemos Kovar em formas de fabrico de precis\u00e3o optimizadas para estampagem profunda, estampagem e maquinagem.\n    <\/p>\n\n    <div class=\"forms-grid\">\n        <a href=\"\/pt\/product-forms\/wire\/\" class=\"form-card-link\">\n            <div class=\"form-card-icon\">\ud83e\uddf5<\/div>\n            <div class=\"form-card-content\">\n                <h4>Tiras e folhas de precis\u00e3o<\/h4>\n                <p>Bobina e tira ultra-finas optimizadas para estampagem a alta velocidade e foto-grava\u00e7\u00e3o de pacotes planos, pacotes de circuitos h\u00edbridos e cabe\u00e7as TO.<\/p>\n            <\/div>\n        <\/a>\n\n        <a href=\"\/pt\/product-forms\/wire\/\" class=\"form-card-link\">\n            <div class=\"form-card-icon\">\ud83e\udea1<\/div>\n            <div class=\"form-card-content\">\n                <h4>Fio e pino de veda\u00e7\u00e3o<\/h4>\n                <p>Fio de elevada pureza concebido especificamente para criar veda\u00e7\u00f5es perfeitas e estanques ao v\u00e1cuo entre vidro e metal em tubos de raios X e instrumentos cient\u00edficos.<\/p>\n            <\/div>\n        <\/a>\n\n        <a href=\"\/pt\/product-forms\/plate-and-sheet\/\" class=\"form-card-link\">\n            <div class=\"form-card-icon\">\ud83d\udd32<\/div>\n            <div class=\"form-card-content\">\n                <h4>Chapas e placas<\/h4>\n                <p>Material plano com excelentes propriedades de estiramento profundo, utilizado extensivamente para o fabrico de caixas electr\u00f3nicas de n\u00edvel militar e componentes de radar.<\/p>\n            <\/div>\n        <\/a>\n\n        <a href=\"\/pt\/product-forms\/bar\/\" class=\"form-card-link\">\n            <div class=\"form-card-icon\">\ud83d\udccf<\/div>\n            <div class=\"form-card-content\">\n                <h4>Bar e var\u00e3o<\/h4>\n                <p>Fornecimento de barras redondas para a maquina\u00e7\u00e3o CNC de precis\u00e3o de passagens de alto v\u00e1cuo, tubos de micro-ondas e juntas de expans\u00e3o combinadas.<\/p>\n            <\/div>\n        <\/a>\n\n        <a href=\"\/pt\/product-forms\/pipe-and-tube\/\" class=\"form-card-link\">\n            <div class=\"form-card-icon\">\ud83d\ude87<\/div>\n            <div class=\"form-card-content\">\n                <h4>Tubos sem costura<\/h4>\n                <p>Tubagem de precis\u00e3o utilizada na constru\u00e7\u00e3o de tubos de transmiss\u00e3o de alta pot\u00eancia, caixas de laser e equipamento m\u00e9dico especializado.<\/p>\n            <\/div>\n        <\/a>\n    <\/div>\n    <div class=\"section-head\">Coeficiente de expans\u00e3o t\u00e9rmica (t\u00edpico)<\/div>\n    <div class=\"data-table-wrap\">\n        <table class=\"tech-table\">\n            <thead>\n                <tr>\n                    <th>Gama de temperaturas<\/th>\n                    <th>CTE m\u00e9dio (\u00b5m\/m-\u00b0C)<\/th>\n                    <th>F\u00f3sforos<\/th>\n                <\/tr>\n            <\/thead>\n            <tbody>\n                <tr>\n                    <td><strong>30 - 200\u00b0C<\/strong><\/td>\n                    <td>5.2<\/td>\n                    <td>Vidro duro (Borosilicato)<\/td>\n                <\/tr>\n                <tr>\n                    <td><strong>30 - 300\u00b0C<\/strong><\/td>\n                    <td>5.1<\/td>\n                    <td>Cer\u00e2mica de alumina (92% - 99%)<\/td>\n                <\/tr>\n                <tr>\n                    <td><strong>30 - 400\u00b0C<\/strong><\/td>\n                    <td>4.9<\/td>\n                    <td>Safira \/ Rubi<\/td>\n                <\/tr>\n                <tr>\n                    <td><strong>30 - 450\u00b0C<\/strong><\/td>\n                    <td>5.3<\/td>\n                    <td>Vidro do tubo de alimenta\u00e7\u00e3o<\/td>\n                <\/tr>\n            <\/tbody>\n        <\/table>\n    <\/div>\n\n    <div class=\"section-head\">Aplica\u00e7\u00f5es t\u00edpicas<\/div>\n    <div class=\"app-list\">\n        <div class=\"app-card\">\n            <h4>Tubos de pot\u00eancia<\/h4>\n            <p>Tubos de transmiss\u00e3o, tubos de ondas progressivas (TWT) e tubos de raios X que requerem integridade de v\u00e1cuo.<\/p>\n        <\/div>\n        <div class=\"app-card\">\n            <h4>Embalagens electr\u00f3nicas<\/h4>\n            <p>Contornos de trans\u00edstores (cabe\u00e7alhos TO), pacotes de circuitos h\u00edbridos e embalagens planas.<\/p>\n        <\/div>\n        <div class=\"app-card\">\n            <h4>Instrumentos cient\u00edficos<\/h4>\n            <p>Passagens para c\u00e2maras de alto v\u00e1cuo e espectr\u00f3metros de massa.<\/p>\n        <\/div>\n        <div class=\"app-card\">\n            <h4>Ilumina\u00e7\u00e3o<\/h4>\n            <p>Ilh\u00f3s e fios condutores para l\u00e2mpadas incandescentes de alta intensidade.<\/p>\n        <\/div>\n    <\/div>\n\n    <div id=\"quote-form\" style=\"margin-top: 60px; background: #f1f4f6; padding: 40px; border-radius: 5px; text-align: center;\">\n        <h3 style=\"color: var(--prod-primary); margin-top: 0;\">Precisa de material Kovar (ASTM F15)?<\/h3>\n        <p style=\"max-width: 600px; margin: 0 auto 20px;\">\n            Mantemos um grande stock de Kovar em placas, chapas, bobinas, barras e fios.\n            O material \u00e9 adequado para estampagem profunda e estampagem.\n        <\/p>\n        <a href=\"\/pt\/contacto\/\" class=\"quote-btn\">Obter um or\u00e7amento r\u00e1pido<\/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":"<p>Home \/ Nickel Alloys \/ Kovar Kovar\u00ae UNS K94610 | W.Nr. 1.3981 | ASTM F15 Kovar is a nominal 29% nickel, 17% cobalt, 54% iron controlled-expansion alloy. It is widely known for having a coefficient of thermal expansion that matches borosilicate (hard) glasses and alumina ceramics, making it the industry standard for reliable hermetic sealing. [&hellip;]<\/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 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applications."],"rank_math_focus_keyword":["kovar"],"_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\":\"3365d6e\",\"elType\":\"container\",\"settings\":{\"flex_direction\":\"column\",\"display_condition_list\":[{\"display_condition_login_status\":\"subscriber\",\"_id\":\"770e0ad\"}]},\"elements\":[{\"id\":\"6a4cd01\",\"elType\":\"widget\",\"settings\":{\"html\":\"<link rel=\\\"stylesheet\\\" href=\\\"\\\/zicss\\\/nickel6.css\\\">\\n\\n<div class=\\\"product-detail-wrapper\\\">\\n\\n    <div class=\\\"breadcrumbs\\\">\\n        <a href=\\\"\\\/\\\">Home<\\\/a> \\n        <span class=\\\"separator\\\">\\\/<\\\/span> \\n        <a href=\\\"\\\/nickel-alloys\\\/\\\">Nickel Alloys<\\\/a>\\n        <span class=\\\"separator\\\">\\\/<\\\/span> \\n        Kovar\\n    <\\\/div>\\n\\n    <div class=\\\"prod-hero\\\">\\n        <div class=\\\"prod-image-box\\\">\\n            <img src=\\\"http:\\\/\\\/www.nickelcasting.com\\\/wp-content\\\/uploads\\\/2026\\\/01\\\/nickel30.jpg\\\" alt=\\\"Kovar Glass to Metal Sealing Alloy\\\">\\n        <\\\/div>\\n        \\n        <div class=\\\"prod-info-box\\\">\\n            <h1>Kovar\\u00ae<\\\/h1>\\n            <div class=\\\"prod-subtitle\\\">UNS K94610 | W.Nr. 1.3981 | ASTM F15<\\\/div>\\n            \\n            <p>\\n                Kovar is a nominal 29% nickel, 17% cobalt, 54% iron controlled-expansion alloy. It is widely known for having a coefficient of thermal expansion that matches borosilicate (hard) glasses and alumina ceramics, making it the industry standard for reliable hermetic sealing.\\n            <\\\/p>\\n\\n            <ul class=\\\"key-specs-list\\\">\\n                <li><strong>Common Forms:<\\\/strong> Sheet, Strip, Plate, Rod, Wire, Tubing.<\\\/li>\\n                <li><strong>Key Feature:<\\\/strong> Matches CTE of Borosilicate Glass & Alumina.<\\\/li>\\n                <li><strong>Application:<\\\/strong> High-integrity Hermetic Seals (Vacuum Tight).<\\\/li>\\n                <li><strong>Quality:<\\\/strong> Double melted (VIM-VAR) for inclusion-free microstructure.<\\\/li>\\n            <\\\/ul>\\n\\n            <div class=\\\"action-area\\\">\\n                <a href=\\\"\\\/contact\\\/\\\" class=\\\"quote-btn\\\">Request a Quote<\\\/a>\\n                <a href=\\\"#\\\" class=\\\"download-btn\\\">Download Datasheet<\\\/a>\\n            <\\\/div>\\n        <\\\/div>\\n    <\\\/div>\\n\\n    <div class=\\\"section-head\\\">Why Choose Kovar?<\\\/div>\\n    <p>\\n        Most metals expand much faster than glass when heated. If you try to seal a copper pin into glass, the glass will shatter as it cools. <strong>Kovar solves this.<\\\/strong> Its thermal expansion curve tracks perfectly with \\\"hard\\\" glasses (like Pyrex) and ceramics from -80\\u00b0C to 450\\u00b0C, ensuring that the seal remains stress-free and vacuum-tight throughout its life.\\n    <\\\/p>\\n\\n    <div class=\\\"feature-grid\\\">\\n        <div class=\\\"feature-col\\\">\\n            <h4>Hermetic Sealing<\\\/h4>\\n            <p>Ensures vacuum-tight seals essential for vacuum tubes, X-ray tubes, and military electronics packages.<\\\/p>\\n        <\\\/div>\\n        <div class=\\\"feature-col\\\">\\n            <h4>Phase Stability<\\\/h4>\\n            <p>Precise chemistry controls ensure the alloy maintains its austenitic structure down to -80\\u00b0C, preventing volume changes that could crack seals.<\\\/p>\\n        <\\\/div>\\n        <div class=\\\"feature-col\\\">\\n            <h4>Clean Microstructure<\\\/h4>\\n            <p>Our Kovar is typically produced via Vacuum Arc Remelting (VAR) to minimize impurities, ensuring uniform etching and plating properties.<\\\/p>\\n        <\\\/div>\\n    <\\\/div>\\n\\n    <div class=\\\"section-head\\\">Chemical Composition (%)<\\\/div>\\n    <div class=\\\"data-table-wrap\\\">\\n        <table class=\\\"tech-table\\\">\\n            <thead>\\n                <tr>\\n                    <th>Element<\\\/th>\\n                    <th>Content (%)<\\\/th>\\n                <\\\/tr>\\n            <\\\/thead>\\n            <tbody>\\n                <tr>\\n                    <td><strong>Nickel (Ni)<\\\/strong><\\\/td>\\n                    <td>29.0<\\\/td>\\n                <\\\/tr>\\n                <tr>\\n                    <td><strong>Cobalt (Co)<\\\/strong><\\\/td>\\n                    <td>17.0<\\\/td>\\n                <\\\/tr>\\n                <tr>\\n                    <td><strong>Iron (Fe)<\\\/strong><\\\/td>\\n                    <td>Balance<\\\/td>\\n                <\\\/tr>\\n                <tr>\\n                    <td><strong>Carbon (C)<\\\/strong><\\\/td>\\n                    <td>0.02 max<\\\/td>\\n                <\\\/tr>\\n                <tr>\\n                    <td><strong>Manganese (Mn)<\\\/strong><\\\/td>\\n                    <td>0.30<\\\/td>\\n                <\\\/tr>\\n                <tr>\\n                    <td><strong>Silicon (Si)<\\\/strong><\\\/td>\\n                    <td>0.20<\\\/td>\\n                <\\\/tr>\\n            <\\\/tbody>\\n        <\\\/table>\\n        <p style=\\\"font-size:0.85rem; color:#666; margin-top:10px;\\\">*Note: The specific Nickel-Cobalt-Iron balance is calibrated for precise expansion control.<\\\/p>\\n    <\\\/div>\\n\\n    <div class=\\\"section-head\\\">Standard Specifications<\\\/div>\\n    <div class=\\\"data-table-wrap\\\">\\n        <table class=\\\"tech-table\\\">\\n            <thead>\\n                <tr>\\n                    <th width=\\\"30%\\\">Product Form<\\\/th>\\n                    <th>Standards (ASTM \\\/ AMS \\\/ MIL)<\\\/th>\\n                <\\\/tr>\\n            <\\\/thead>\\n            <tbody>\\n                <tr>\\n                    <td><strong>Bar, Rod, Wire<\\\/strong><\\\/td>\\n                    <td>ASTM F15, AMS I-23011 Class 1, MIL-I-23011 Class 1<\\\/td>\\n                <\\\/tr>\\n                <tr>\\n                    <td><strong>Sheet, Strip, Plate<\\\/strong><\\\/td>\\n                    <td>ASTM F15, AMS I-23011 Class 1, MIL-I-23011 Class 1<\\\/td>\\n                <\\\/tr>\\n                <tr>\\n                    <td><strong>Tubing<\\\/strong><\\\/td>\\n                    <td>ASTM F15<\\\/td>\\n                <\\\/tr>\\n                <tr>\\n                    <td><strong>DIN Standard<\\\/strong><\\\/td>\\n                    <td>DIN 17745, W.Nr. 1.3981<\\\/td>\\n                <\\\/tr>\\n            <\\\/tbody>\\n        <\\\/table>\\n    <\\\/div>\\n\\n    \\n    <div class=\\\"section-head\\\">Available Forms for Kovar\\u00ae (ASTM F15)<\\\/div>\\n    <p style=\\\"margin-bottom: 25px;\\\">\\n        To support the rigorous demands of the semiconductor, aerospace, and high-vacuum electronics industries, we supply Kovar in precision-manufactured forms optimized for deep drawing, stamping, and machining.\\n    <\\\/p>\\n\\n    <div class=\\\"forms-grid\\\">\\n        <a href=\\\"\\\/product-forms\\\/wire\\\/\\\" class=\\\"form-card-link\\\">\\n            <div class=\\\"form-card-icon\\\">\\ud83e\\uddf5<\\\/div>\\n            <div class=\\\"form-card-content\\\">\\n                <h4>Precision Strip & Foil<\\\/h4>\\n                <p>Ultra-thin coil and strip optimized for high-speed stamping and photo-etching of flat packs, hybrid circuit packages, and TO headers.<\\\/p>\\n            <\\\/div>\\n        <\\\/a>\\n\\n        <a href=\\\"\\\/product-forms\\\/wire\\\/\\\" class=\\\"form-card-link\\\">\\n            <div class=\\\"form-card-icon\\\">\\ud83e\\udea1<\\\/div>\\n            <div class=\\\"form-card-content\\\">\\n                <h4>Sealing Wire & Pin<\\\/h4>\\n                <p>High-purity wire engineered specifically for creating flawless, vacuum-tight glass-to-metal seals in x-ray tubes and scientific instruments.<\\\/p>\\n            <\\\/div>\\n        <\\\/a>\\n\\n        <a href=\\\"\\\/product-forms\\\/plate-and-sheet\\\/\\\" class=\\\"form-card-link\\\">\\n            <div class=\\\"form-card-icon\\\">\\ud83d\\udd32<\\\/div>\\n            <div class=\\\"form-card-content\\\">\\n                <h4>Sheet & Plate<\\\/h4>\\n                <p>Flat stock with excellent deep drawing properties, used extensively for manufacturing military-grade electronic enclosures and radar components.<\\\/p>\\n            <\\\/div>\\n        <\\\/a>\\n\\n        <a href=\\\"\\\/product-forms\\\/bar\\\/\\\" class=\\\"form-card-link\\\">\\n            <div class=\\\"form-card-icon\\\">\\ud83d\\udccf<\\\/div>\\n            <div class=\\\"form-card-content\\\">\\n                <h4>Bar & Rod<\\\/h4>\\n                <p>Round bar stock supplied for the precision CNC machining of high-vacuum feed-throughs, microwave tubes, and matched-expansion joints.<\\\/p>\\n            <\\\/div>\\n        <\\\/a>\\n\\n        <a href=\\\"\\\/product-forms\\\/pipe-and-tube\\\/\\\" class=\\\"form-card-link\\\">\\n            <div class=\\\"form-card-icon\\\">\\ud83d\\ude87<\\\/div>\\n            <div class=\\\"form-card-content\\\">\\n                <h4>Seamless Tubing<\\\/h4>\\n                <p>Precision tubing utilized in the construction of high-power transmitting tubes, laser enclosures, and specialized medical equipment.<\\\/p>\\n            <\\\/div>\\n        <\\\/a>\\n    <\\\/div>\\n    <div class=\\\"section-head\\\">Coefficient of Thermal Expansion (Typical)<\\\/div>\\n    <div class=\\\"data-table-wrap\\\">\\n        <table class=\\\"tech-table\\\">\\n            <thead>\\n                <tr>\\n                    <th>Temperature Range<\\\/th>\\n                    <th>Average CTE (\\u00b5m\\\/m\\u00b7\\u00b0C)<\\\/th>\\n                    <th>Matches<\\\/th>\\n                <\\\/tr>\\n            <\\\/thead>\\n            <tbody>\\n                <tr>\\n                    <td><strong>30 - 200\\u00b0C<\\\/strong><\\\/td>\\n                    <td>5.2<\\\/td>\\n                    <td>Hard Glass (Borosilicate)<\\\/td>\\n                <\\\/tr>\\n                <tr>\\n                    <td><strong>30 - 300\\u00b0C<\\\/strong><\\\/td>\\n                    <td>5.1<\\\/td>\\n                    <td>Alumina Ceramics (92% - 99%)<\\\/td>\\n                <\\\/tr>\\n                <tr>\\n                    <td><strong>30 - 400\\u00b0C<\\\/strong><\\\/td>\\n                    <td>4.9<\\\/td>\\n                    <td>Sapphire \\\/ Ruby<\\\/td>\\n                <\\\/tr>\\n                <tr>\\n                    <td><strong>30 - 450\\u00b0C<\\\/strong><\\\/td>\\n                    <td>5.3<\\\/td>\\n                    <td>Power Tube Glass<\\\/td>\\n                <\\\/tr>\\n            <\\\/tbody>\\n        <\\\/table>\\n    <\\\/div>\\n\\n    <div class=\\\"section-head\\\">Typical Applications<\\\/div>\\n    <div class=\\\"app-list\\\">\\n        <div class=\\\"app-card\\\">\\n            <h4>Power Tubes<\\\/h4>\\n            <p>Transmitting tubes, traveling wave tubes (TWT), and X-ray tubes requiring vacuum integrity.<\\\/p>\\n        <\\\/div>\\n        <div class=\\\"app-card\\\">\\n            <h4>Electronic Packages<\\\/h4>\\n            <p>Transistor outlines (TO headers), hybrid circuit packages, and flat packs.<\\\/p>\\n        <\\\/div>\\n        <div class=\\\"app-card\\\">\\n            <h4>Scientific Instruments<\\\/h4>\\n            <p>Feed-throughs for high-vacuum chambers and mass spectrometers.<\\\/p>\\n        <\\\/div>\\n        <div class=\\\"app-card\\\">\\n            <h4>Lighting<\\\/h4>\\n            <p>Eyelets and lead wires for high-intensity incandescent lamps.<\\\/p>\\n        <\\\/div>\\n    <\\\/div>\\n\\n    <div id=\\\"quote-form\\\" style=\\\"margin-top: 60px; background: #f1f4f6; padding: 40px; border-radius: 5px; text-align: center;\\\">\\n        <h3 style=\\\"color: var(--prod-primary); margin-top: 0;\\\">Need Kovar (ASTM F15) Material?<\\\/h3>\\n        <p style=\\\"max-width: 600px; margin: 0 auto 20px;\\\">\\n            We maintain a deep inventory of Kovar in plate, sheet, coil, rod, and wire forms.\\n            Material is suitable for deep drawing and stamping.\\n        <\\\/p>\\n        <a href=\\\"\\\/contact\\\/\\\" class=\\\"quote-btn\\\">Get a Quick Quote<\\\/a>\\n    <\\\/div>\\n\\n<\\\/div>\",\"display_condition_list\":[{\"display_condition_login_status\":\"subscriber\",\"_id\":\"6c618c2\"}]},\"elements\":[],\"widgetType\":\"html\"}],\"isInner\":false}]"],"rank_math_og_content_image":["a:2:{s:5:\"check\";s:32:\"cd8fcf489e36024dd1f93b0917c2a8c6\";s:6:\"images\";a:1:{i:0;i:2321;}}"],"ilj_blacklistdefinition":["a:0:{}"],"ilj_linkdefinition":["a:1:{i:0;s:5:\"Kovar\";}"],"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) 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!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-2331.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:1776543358;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\":1776633358,\"value\":{\"content\":\"<div class=\\\"elementor-element elementor-element-3365d6e e-flex e-con-boxed e-con e-parent\\\" data-id=\\\"3365d6e\\\" data-element_type=\\\"container\\\">\\n\\t\\t\\t\\t\\t<div class=\\\"e-con-inner\\\">\\n\\t\\t\\t\\t<div class=\\\"elementor-element elementor-element-6a4cd01 elementor-widget elementor-widget-html\\\" data-id=\\\"6a4cd01\\\" data-element_type=\\\"widget\\\" data-widget_type=\\\"html.default\\\">\\n\\t\\t\\t\\t<div class=\\\"elementor-widget-container\\\">\\n\\t\\t\\t\\t\\t<link rel=\\\"stylesheet\\\" href=\\\"\\\/zicss\\\/nickel6.css\\\">\\n\\n<div class=\\\"product-detail-wrapper\\\">\\n\\n    <div class=\\\"breadcrumbs\\\">\\n        <a href=\\\"\\\/\\\">Home<\\\/a> \\n        <span class=\\\"separator\\\">\\\/<\\\/span> \\n        <a href=\\\"\\\/nickel-alloys\\\/\\\">Nickel Alloys<\\\/a>\\n        <span class=\\\"separator\\\">\\\/<\\\/span> \\n        Kovar\\n    <\\\/div>\\n\\n    <div class=\\\"prod-hero\\\">\\n        <div class=\\\"prod-image-box\\\">\\n            <img src=\\\"http:\\\/\\\/www.nickelcasting.com\\\/wp-content\\\/uploads\\\/2026\\\/01\\\/nickel30.jpg\\\" alt=\\\"Kovar Glass to Metal Sealing Alloy\\\">\\n        <\\\/div>\\n        \\n        <div class=\\\"prod-info-box\\\">\\n            <h1>Kovar\\u00ae<\\\/h1>\\n            <div class=\\\"prod-subtitle\\\">UNS K94610 | W.Nr. 1.3981 | ASTM F15<\\\/div>\\n            \\n            <p>\\n                Kovar is a nominal 29% nickel, 17% cobalt, 54% iron controlled-expansion alloy. It is widely known for having a coefficient of thermal expansion that matches borosilicate (hard) glasses and alumina ceramics, making it the industry standard for reliable hermetic sealing.\\n            <\\\/p>\\n\\n            <ul class=\\\"key-specs-list\\\">\\n                <li><strong>Common Forms:<\\\/strong> Sheet, Strip, Plate, Rod, Wire, Tubing.<\\\/li>\\n                <li><strong>Key Feature:<\\\/strong> Matches CTE of Borosilicate Glass & Alumina.<\\\/li>\\n                <li><strong>Application:<\\\/strong> High-integrity Hermetic Seals (Vacuum Tight).<\\\/li>\\n                <li><strong>Quality:<\\\/strong> Double melted (VIM-VAR) for inclusion-free microstructure.<\\\/li>\\n            <\\\/ul>\\n\\n            <div class=\\\"action-area\\\">\\n                <a href=\\\"\\\/contact\\\/\\\" class=\\\"quote-btn\\\">Request a Quote<\\\/a>\\n                <a href=\\\"#\\\" class=\\\"download-btn\\\">Download Datasheet<\\\/a>\\n            <\\\/div>\\n        <\\\/div>\\n    <\\\/div>\\n\\n    <div class=\\\"section-head\\\">Why Choose Kovar?<\\\/div>\\n    <p>\\n        Most metals expand much faster than glass when heated. If you try to seal a copper pin into glass, the glass will shatter as it cools. <strong>Kovar solves this.<\\\/strong> Its thermal expansion curve tracks perfectly with \\\"hard\\\" glasses (like Pyrex) and ceramics from -80\\u00b0C to 450\\u00b0C, ensuring that the seal remains stress-free and vacuum-tight throughout its life.\\n    <\\\/p>\\n\\n    <div class=\\\"feature-grid\\\">\\n        <div class=\\\"feature-col\\\">\\n            <h4>Hermetic Sealing<\\\/h4>\\n            <p>Ensures vacuum-tight seals essential for vacuum tubes, X-ray tubes, and military electronics packages.<\\\/p>\\n        <\\\/div>\\n        <div class=\\\"feature-col\\\">\\n            <h4>Phase Stability<\\\/h4>\\n            <p>Precise chemistry controls ensure the alloy maintains its austenitic structure down to -80\\u00b0C, preventing volume changes that could crack seals.<\\\/p>\\n        <\\\/div>\\n        <div class=\\\"feature-col\\\">\\n            <h4>Clean Microstructure<\\\/h4>\\n            <p>Our Kovar is typically produced via Vacuum Arc Remelting (VAR) to minimize impurities, ensuring uniform etching and plating properties.<\\\/p>\\n        <\\\/div>\\n    <\\\/div>\\n\\n    <div class=\\\"section-head\\\">Chemical Composition (%)<\\\/div>\\n    <div class=\\\"data-table-wrap\\\">\\n        <table class=\\\"tech-table\\\">\\n            <thead>\\n                <tr>\\n                    <th>Element<\\\/th>\\n                    <th>Content (%)<\\\/th>\\n                <\\\/tr>\\n            <\\\/thead>\\n            <tbody>\\n                <tr>\\n                    <td><strong>Nickel (Ni)<\\\/strong><\\\/td>\\n                    <td>29.0<\\\/td>\\n                <\\\/tr>\\n                <tr>\\n                    <td><strong>Cobalt (Co)<\\\/strong><\\\/td>\\n                    <td>17.0<\\\/td>\\n                <\\\/tr>\\n                <tr>\\n                    <td><strong>Iron (Fe)<\\\/strong><\\\/td>\\n                    <td>Balance<\\\/td>\\n                <\\\/tr>\\n                <tr>\\n                    <td><strong>Carbon (C)<\\\/strong><\\\/td>\\n                    <td>0.02 max<\\\/td>\\n                <\\\/tr>\\n                <tr>\\n                    <td><strong>Manganese (Mn)<\\\/strong><\\\/td>\\n                    <td>0.30<\\\/td>\\n                <\\\/tr>\\n                <tr>\\n                    <td><strong>Silicon (Si)<\\\/strong><\\\/td>\\n                    <td>0.20<\\\/td>\\n                <\\\/tr>\\n            <\\\/tbody>\\n        <\\\/table>\\n        <p style=\\\"font-size:0.85rem; color:#666; margin-top:10px;\\\">*Note: The specific Nickel-Cobalt-Iron balance is calibrated for precise expansion control.<\\\/p>\\n    <\\\/div>\\n\\n    <div class=\\\"section-head\\\">Standard Specifications<\\\/div>\\n    <div class=\\\"data-table-wrap\\\">\\n        <table class=\\\"tech-table\\\">\\n            <thead>\\n                <tr>\\n                    <th width=\\\"30%\\\">Product Form<\\\/th>\\n                    <th>Standards (ASTM \\\/ AMS \\\/ MIL)<\\\/th>\\n                <\\\/tr>\\n            <\\\/thead>\\n            <tbody>\\n                <tr>\\n                    <td><strong>Bar, Rod, Wire<\\\/strong><\\\/td>\\n                    <td>ASTM F15, AMS I-23011 Class 1, MIL-I-23011 Class 1<\\\/td>\\n                <\\\/tr>\\n                <tr>\\n                    <td><strong>Sheet, Strip, Plate<\\\/strong><\\\/td>\\n                    <td>ASTM F15, AMS I-23011 Class 1, MIL-I-23011 Class 1<\\\/td>\\n                <\\\/tr>\\n                <tr>\\n                    <td><strong>Tubing<\\\/strong><\\\/td>\\n                    <td>ASTM F15<\\\/td>\\n                <\\\/tr>\\n                <tr>\\n                    <td><strong>DIN Standard<\\\/strong><\\\/td>\\n                    <td>DIN 17745, W.Nr. 1.3981<\\\/td>\\n                <\\\/tr>\\n            <\\\/tbody>\\n        <\\\/table>\\n    <\\\/div>\\n\\n    \\n    <div class=\\\"section-head\\\">Available Forms for Kovar\\u00ae (ASTM F15)<\\\/div>\\n    <p style=\\\"margin-bottom: 25px;\\\">\\n        To support the rigorous demands of the semiconductor, aerospace, and high-vacuum electronics industries, we supply Kovar in precision-manufactured forms optimized for deep drawing, stamping, and machining.\\n    <\\\/p>\\n\\n    <div class=\\\"forms-grid\\\">\\n        <a href=\\\"\\\/product-forms\\\/wire\\\/\\\" class=\\\"form-card-link\\\">\\n            <div class=\\\"form-card-icon\\\">\\ud83e\\uddf5<\\\/div>\\n            <div class=\\\"form-card-content\\\">\\n                <h4>Precision Strip & Foil<\\\/h4>\\n                <p>Ultra-thin coil and strip optimized for high-speed stamping and photo-etching of flat packs, hybrid circuit packages, and TO headers.<\\\/p>\\n            <\\\/div>\\n        <\\\/a>\\n\\n        <a href=\\\"\\\/product-forms\\\/wire\\\/\\\" class=\\\"form-card-link\\\">\\n            <div class=\\\"form-card-icon\\\">\\ud83e\\udea1<\\\/div>\\n            <div class=\\\"form-card-content\\\">\\n                <h4>Sealing Wire & Pin<\\\/h4>\\n                <p>High-purity wire engineered specifically for creating flawless, vacuum-tight glass-to-metal seals in x-ray tubes and scientific instruments.<\\\/p>\\n            <\\\/div>\\n        <\\\/a>\\n\\n        <a href=\\\"\\\/product-forms\\\/plate-and-sheet\\\/\\\" class=\\\"form-card-link\\\">\\n            <div class=\\\"form-card-icon\\\">\\ud83d\\udd32<\\\/div>\\n            <div class=\\\"form-card-content\\\">\\n                <h4>Sheet & Plate<\\\/h4>\\n                <p>Flat stock with excellent deep drawing properties, used extensively for manufacturing military-grade electronic enclosures and radar components.<\\\/p>\\n            <\\\/div>\\n        <\\\/a>\\n\\n        <a href=\\\"\\\/product-forms\\\/bar\\\/\\\" class=\\\"form-card-link\\\">\\n            <div class=\\\"form-card-icon\\\">\\ud83d\\udccf<\\\/div>\\n            <div class=\\\"form-card-content\\\">\\n                <h4>Bar & Rod<\\\/h4>\\n                <p>Round bar stock supplied for the precision CNC machining of high-vacuum feed-throughs, microwave tubes, and matched-expansion joints.<\\\/p>\\n            <\\\/div>\\n        <\\\/a>\\n\\n        <a href=\\\"\\\/product-forms\\\/pipe-and-tube\\\/\\\" class=\\\"form-card-link\\\">\\n            <div class=\\\"form-card-icon\\\">\\ud83d\\ude87<\\\/div>\\n            <div class=\\\"form-card-content\\\">\\n                <h4>Seamless Tubing<\\\/h4>\\n                <p>Precision tubing utilized in the construction of high-power transmitting tubes, laser enclosures, and specialized medical equipment.<\\\/p>\\n            <\\\/div>\\n        <\\\/a>\\n    <\\\/div>\\n    <div class=\\\"section-head\\\">Coefficient of Thermal Expansion (Typical)<\\\/div>\\n    <div class=\\\"data-table-wrap\\\">\\n        <table class=\\\"tech-table\\\">\\n            <thead>\\n                <tr>\\n                    <th>Temperature Range<\\\/th>\\n                    <th>Average CTE (\\u00b5m\\\/m\\u00b7\\u00b0C)<\\\/th>\\n                    <th>Matches<\\\/th>\\n                <\\\/tr>\\n            <\\\/thead>\\n            <tbody>\\n                <tr>\\n                    <td><strong>30 - 200\\u00b0C<\\\/strong><\\\/td>\\n                    <td>5.2<\\\/td>\\n                    <td>Hard Glass (Borosilicate)<\\\/td>\\n                <\\\/tr>\\n                <tr>\\n                    <td><strong>30 - 300\\u00b0C<\\\/strong><\\\/td>\\n                    <td>5.1<\\\/td>\\n                    <td>Alumina Ceramics (92% - 99%)<\\\/td>\\n                <\\\/tr>\\n                <tr>\\n                    <td><strong>30 - 400\\u00b0C<\\\/strong><\\\/td>\\n                    <td>4.9<\\\/td>\\n                    <td>Sapphire \\\/ Ruby<\\\/td>\\n                <\\\/tr>\\n                <tr>\\n                    <td><strong>30 - 450\\u00b0C<\\\/strong><\\\/td>\\n                    <td>5.3<\\\/td>\\n                    <td>Power Tube Glass<\\\/td>\\n                <\\\/tr>\\n            <\\\/tbody>\\n        <\\\/table>\\n    <\\\/div>\\n\\n    <div class=\\\"section-head\\\">Typical Applications<\\\/div>\\n    <div class=\\\"app-list\\\">\\n        <div class=\\\"app-card\\\">\\n            <h4>Power Tubes<\\\/h4>\\n            <p>Transmitting tubes, traveling wave tubes (TWT), and X-ray tubes requiring vacuum integrity.<\\\/p>\\n        <\\\/div>\\n        <div class=\\\"app-card\\\">\\n            <h4>Electronic Packages<\\\/h4>\\n            <p>Transistor outlines (TO headers), hybrid circuit packages, and flat packs.<\\\/p>\\n        <\\\/div>\\n        <div class=\\\"app-card\\\">\\n            <h4>Scientific Instruments<\\\/h4>\\n            <p>Feed-throughs for high-vacuum chambers and mass spectrometers.<\\\/p>\\n        <\\\/div>\\n        <div class=\\\"app-card\\\">\\n            <h4>Lighting<\\\/h4>\\n            <p>Eyelets and lead wires for high-intensity incandescent lamps.<\\\/p>\\n        <\\\/div>\\n    <\\\/div>\\n\\n    <div id=\\\"quote-form\\\" style=\\\"margin-top: 60px; background: #f1f4f6; padding: 40px; border-radius: 5px; text-align: center;\\\">\\n        <h3 style=\\\"color: var(--prod-primary); margin-top: 0;\\\">Need Kovar (ASTM F15) Material?<\\\/h3>\\n        <p style=\\\"max-width: 600px; margin: 0 auto 20px;\\\">\\n            We maintain a deep inventory of Kovar in plate, sheet, coil, rod, and wire forms.\\n            Material is suitable for deep drawing and stamping.\\n        <\\\/p>\\n        <a href=\\\"\\\/contact\\\/\\\" class=\\\"quote-btn\\\">Get a Quick 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\/pt\/author\/nickel\/"},"uagb_comment_info":0,"uagb_excerpt":"Home \/ Nickel Alloys \/ Kovar Kovar\u00ae UNS K94610 | W.Nr. 1.3981 | ASTM F15 Kovar is a nominal 29% nickel, 17% cobalt, 54% iron controlled-expansion alloy. It is widely known for having a coefficient of thermal expansion that matches borosilicate (hard) glasses and alumina ceramics, making it the industry standard for reliable hermetic sealing.&hellip;","_links":{"self":[{"href":"https:\/\/www.nickelcasting.com\/pt\/wp-json\/wp\/v2\/pages\/2331","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.nickelcasting.com\/pt\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.nickelcasting.com\/pt\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.nickelcasting.com\/pt\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.nickelcasting.com\/pt\/wp-json\/wp\/v2\/comments?post=2331"}],"version-history":[{"count":14,"href":"https:\/\/www.nickelcasting.com\/pt\/wp-json\/wp\/v2\/pages\/2331\/revisions"}],"predecessor-version":[{"id":3428,"href":"https:\/\/www.nickelcasting.com\/pt\/wp-json\/wp\/v2\/pages\/2331\/revisions\/3428"}],"up":[{"embeddable":true,"href":"https:\/\/www.nickelcasting.com\/pt\/wp-json\/wp\/v2\/pages\/1831"}],"wp:attachment":[{"href":"https:\/\/www.nickelcasting.com\/pt\/wp-json\/wp\/v2\/media?parent=2331"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}