{"id":7020,"date":"2024-10-15T15:49:56","date_gmt":"2024-10-15T13:49:56","guid":{"rendered":"https:\/\/mfinox.com\/materiaux\/werkstoff-1-4938-a437-b4b-x11crnimon12-422-s42200\/"},"modified":"2024-12-05T21:06:20","modified_gmt":"2024-12-05T19:06:20","slug":"werkstoff-1-4938-a437-b4b-x11crnimon12-422-s42200","status":"publish","type":"page","link":"https:\/\/mfinox.com\/fr\/materiaux\/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=\"7020\" class=\"elementor elementor-7020 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\/fr\/\" 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>Le mat\u00e9riau 1.4938 est un acier inoxydable martensitique aux propri\u00e9t\u00e9s m\u00e9caniques et \u00e0 la r\u00e9sistance \u00e0 la corrosion \u00e9lev\u00e9es, souvent utilis\u00e9 dans des applications critiques telles que les turbines et les composants a\u00e9rospatiaux. La d\u00e9signation A437 B4B fait r\u00e9f\u00e9rence \u00e0 la classification selon l&rsquo;ASTM A437, qui s&rsquo;applique aux aciers destin\u00e9s aux applications \u00e0 haute temp\u00e9rature et \u00e0 haute pression, telles que les boulons de chaudi\u00e8res et de turbines. <\/p>\n    \n    <h2>Composition chimique<\/h2><br>\n    <table>\n        <tr>\n            <th>\u00c9l\u00e9ment<\/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>Oui<\/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>Caract\u00e9ristiques m\u00e9caniques<\/h2><br>\n    <table>\n        <tr>\n            <th>Mat\u00e9riau<\/th><th>Rm min (MPa)<\/th><th>Rp 0,2 min (MPa)<\/th><th>Allongement (%)<\/th><th>Duret\u00e9 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>Propri\u00e9t\u00e9s physiques<\/h2>\n    <ul>\n        <li>Densit\u00e9 : 7,7 &#8211; 7,8 g\/cm\u00b3.<\/li>\n        <li>Module d&rsquo;\u00e9lasticit\u00e9 : 210 GPa<\/li>\n        <li>Coefficient de dilatation thermique (20-100\u00b0C) : 11,5 x 10^-6 K^-1<\/li>\n        <li>Conductivit\u00e9 thermique (\u00e0 100\u00b0C) : 23 W\/m-K<\/li>\n        <li>Capacit\u00e9 thermique sp\u00e9cifique : 460 J\/kg-K<\/li>\n    <\/ul>\n\n    <h2>Traitements thermiques<\/h2>\n    <ul>\n        <li>Durcissement <strong>:<\/strong> Le mat\u00e9riau est durci dans l&rsquo;huile ou dans l&rsquo;air \u00e0 une temp\u00e9rature d&rsquo;environ 1000\u00b0C suivie d&rsquo;un refroidissement rapide.<\/li>\n        <li>Revenu <strong>:<\/strong> g\u00e9n\u00e9ralement effectu\u00e9 \u00e0 une temp\u00e9rature comprise entre 650\u00b0C et 750\u00b0C pour am\u00e9liorer la t\u00e9nacit\u00e9 et r\u00e9duire les contraintes internes.<\/li>\n    <\/ul>\n\n    <h2>R\u00e9sistance \u00e0 la corrosion<\/h2>\n    <p>Le 1.4938 offre une bonne r\u00e9sistance \u00e0 la corrosion dans les environnements \u00e0 haute temp\u00e9rature gr\u00e2ce \u00e0 la pr\u00e9sence de chrome et de molybd\u00e8ne. Cependant, compar\u00e9 aux aciers inoxydables aust\u00e9nitiques, il pr\u00e9sente une r\u00e9sistance \u00e0 la corrosion l\u00e9g\u00e8rement inf\u00e9rieure dans les environnements tr\u00e8s agressifs (par exemple, avec des niveaux \u00e9lev\u00e9s de chlorures). <\/p>\n\n    <h2>Correspondance r\u00e9glementaire<\/h2>\n    <ul>\n        <li>FR : 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 Le mat\u00e9riau 1.4938 est un acier inoxydable martensitique aux propri\u00e9t\u00e9s m\u00e9caniques et \u00e0 la r\u00e9sistance \u00e0 la corrosion \u00e9lev\u00e9es, souvent utilis\u00e9 dans des applications critiques telles que les turbines et les composants a\u00e9rospatiaux. La d\u00e9signation A437 B4B fait r\u00e9f\u00e9rence \u00e0 la classification selon l&rsquo;ASTM A437, qui s&rsquo;applique aux [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":4505,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-7020","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.7 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Werkstoff 1.4938 A437 B4B X11CrNiMoN12 422 S42200 - M.F. 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