{"id":6790,"date":"2024-10-15T15:49:56","date_gmt":"2024-10-15T15:49:56","guid":{"rendered":"https:\/\/mfinox.com\/materials\/werkstoff-1-4938-a437-b4b-x11crnimon12-422-s42200\/"},"modified":"2024-10-16T13:18:38","modified_gmt":"2024-10-16T13:18:38","slug":"werkstoff-1-4938-a437-b4b-x11crnimon12-422-s42200","status":"publish","type":"page","link":"https:\/\/mfinox.com\/en\/materials\/werkstoff-1-4938-a437-b4b-x11crnimon12-422-s42200\/","title":{"rendered":"Werkstoff 1.4938 A437 B4B X11CrNiMoN12 422 S42200"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-page\" data-elementor-id=\"6790\" class=\"elementor elementor-6790 elementor-6763\" data-elementor-post-type=\"page\">\n\t\t\t\t<div class=\"elementor-element elementor-element-6de979d3 e-flex e-con-boxed e-con e-parent\" data-id=\"6de979d3\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-43f85fd2 titolo-materiali elementor-invisible elementor-widget elementor-widget-heading\" data-id=\"43f85fd2\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeIn&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h1 class=\"elementor-heading-title elementor-size-default\">ASTM A437 B4B W 1.4938 AISI 422<\/h1>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-8b46ab0 elementor-invisible elementor-widget elementor-widget-shortcode\" data-id=\"8b46ab0\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeIn&quot;}\" data-widget_type=\"shortcode.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-shortcode\"><nav aria-label=\"breadcrumb\"><div class=\"breadcrumb\"><span class=\"breadcrumb-item\"><a href=\"https:\/\/mfinox.com\/en\/\" style=\"color: #F3912E;\">Home<\/a><\/span><\/div><\/nav><\/div>\n\t\t\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<div class=\"elementor-element elementor-element-5b4e5354 e-flex e-con-boxed elementor-invisible e-con e-parent\" data-id=\"5b4e5354\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;animation&quot;:&quot;fadeInUp&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-81ac661 elementor-widget elementor-widget-text-editor\" data-id=\"81ac661\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Material 1.4938 is a martensitic stainless steel with high mechanical properties and corrosion resistance, often used in critical applications such as turbines and aerospace components. The A437 B4B designation refers to the ASTM A437 standard classification, which applies to steels intended for high-temperature and high-pressure applications, such as boiler and turbine bolts. <\/p>\n    \n    <h2>Chemical Composition<\/h2><br>\n    <table>\n        <tr>\n            <th>Element<\/th><th>Minimum (%)<\/th><th>Maximum (%)<\/th>\n        <\/tr>\n        <tr>\n            <td>Ni<\/td><td>3.8<\/td><td>4.8<\/td>\n        <\/tr>\n        <tr>\n            <td>Cr<\/td><td>11.5<\/td><td>13.5<\/td>\n        <\/tr>\n        <tr>\n            <td>P<\/td><td><\/td><td>0.020<\/td>\n        <\/tr>\n        <tr>\n            <td>Mo<\/td><td>1.0<\/td><td>1.5<\/td>\n        <\/tr>\n        <tr>\n            <td>C<\/td><td>0.12<\/td><td>0.18<\/td>\n        <\/tr>\n        <tr>\n            <td>Mn<\/td><td>1.0<\/td><td>1.5<\/td>\n        <\/tr>\n        <tr>\n            <td>Yes<\/td><td><\/td><td>0.50<\/td>\n        <\/tr>\n        <tr>\n            <td>V<\/td><td>0.20<\/td><td>0.50<\/td>\n        <\/tr>\n        <tr>\n            <td>S<\/td><td><\/td><td>0.015<\/td>\n        <\/tr>\n    <\/table>\n\n    <h2>Mechanical Characteristics<\/h2><br>\n    <table>\n        <tr>\n            <th>Material<\/th><th>Rm min (MPa)<\/th><th>Rp 0.2 min (MPa)<\/th><th>Elongation (%)<\/th><th>Hardness max (HRC)<\/th>\n        <\/tr>\n        <tr>\n            <td>Werkstoff 1.4938 A437 B4B<\/td><td>850 &#8211; 1100<\/td><td>650-800<\/td><td>12-15<\/td><td>25 &#8211; 35<\/td>\n        <\/tr>\n    <\/table>\n\n    <h2>Physical Properties<\/h2>\n    <ul>\n        <li>Density: 7.7 to 7.8 g\/cm\u00b3<\/li>\n        <li>Modulus of elasticity: 210 GPa<\/li>\n        <li>Coefficient of thermal expansion (20-100\u00b0C): 11.5 x 10^-6 K^-1<\/li>\n        <li>Thermal conductivity (at 100\u00b0C): 23 W\/m-K<\/li>\n        <li>Specific heat capacity: 460 J\/kg-K<\/li>\n    <\/ul>\n\n    <h2>Heat Treatments<\/h2>\n    <ul>\n        <li><strong>Tempering:<\/strong> The material is tempered in oil or air at a temperature of about 1000\u00b0C followed by rapid cooling.<\/li>\n        <li><strong>Tempering:<\/strong> Usually performed at a temperature between 650\u00b0C and 750\u00b0C to improve toughness and reduce internal stresses.<\/li>\n    <\/ul>\n\n    <h2>Corrosion Resistance<\/h2>\n    <p>1.4938 offers good corrosion resistance in high temperature environments due to the presence of chromium and molybdenum. However, compared to austenitic stainless steels, it has slightly lower corrosion resistance in highly aggressive environments (e.g., with high levels of chlorides). <\/p>\n\n    <h2>Correspondence and Specifications<\/h2>\n    <ul>\n        <li>EN: 10269<\/li>\n        <li>ASTM: A437<\/li>\n    <\/ul>\t\t\t\t\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>\n\t\t","protected":false},"excerpt":{"rendered":"<p>ASTM A437 B4B W 1.4938 AISI 422 Material 1.4938 is a martensitic stainless steel with high mechanical properties and corrosion resistance, often used in critical applications such as turbines and aerospace components. The A437 B4B designation refers to the ASTM A437 standard classification, which applies to steels intended for high-temperature and high-pressure applications, such as [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":4502,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-6790","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Werkstoff 1.4938 A437 B4B X11CrNiMoN12 422 S42200 - M.F. 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