{"id":55301,"date":"2025-12-15T07:05:06","date_gmt":"2025-12-15T07:05:06","guid":{"rendered":"https:\/\/www.kaysuns.com\/?p=55301"},"modified":"2026-01-13T01:22:12","modified_gmt":"2026-01-13T01:22:12","slug":"la-resistance-a-la-corrosion-de-lacier-inoxydable","status":"publish","type":"post","link":"https:\/\/www.kaysuns.com\/fr\/la-resistance-a-la-corrosion-de-lacier-inoxydable\/","title":{"rendered":"R\u00e9sistance \u00e0 la corrosion de l'acier inoxydable"},"content":{"rendered":"<div data-elementor-type=\"wp-post\" data-elementor-id=\"55301\" class=\"elementor elementor-55301\" data-elementor-post-type=\"post\">\n\t\t\t\t<div class=\"elementor-element elementor-element-fb1afbc e-flex e-con-boxed e-con e-parent\" data-id=\"fb1afbc\" 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-eec7658 elementor-widget elementor-widget-text-editor\" data-id=\"eec7658\" data-element_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><strong>R\u00e9sistance \u00e0 la corrosion<\/strong> La r\u00e9sistance \u00e0 la corrosion est la caract\u00e9ristique la plus fondamentale de l'acier inoxydable. <a href=\"https:\/\/www.kaysuns.com\/fr\/tuyaux-en-acier-inoxydable\/\" target=\"_blank\" rel=\"noopener\">tuyaux en acier inoxydable<\/a> et <a href=\"https:\/\/www.kaysuns.com\/fr\/raccords-de-tuyauterie-en-acier-inoxydable\/\" target=\"_blank\" rel=\"noopener\">raccords<\/a> C'est pr\u00e9cis\u00e9ment cette propri\u00e9t\u00e9 qui rend ce mat\u00e9riau indispensable dans d'innombrables applications industrielles et grand public.<br \/>L'acier inoxydable rouille-t-il ? L'obtention et le maintien de cette r\u00e9sistance \u00e0 la corrosion n\u00e9cessitent une connaissance approfondie de la composition chimique de l'alliage et de l'environnement dans lequel il est utilis\u00e9.<\/p>\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<section class=\"elementor-section elementor-top-section elementor-element elementor-element-0980863 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"0980863\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-0c4974e\" data-id=\"0c4974e\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-71859ce elementor-widget elementor-widget-heading\" data-id=\"71859ce\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Le m\u00e9canisme de la r\u00e9sistance \u00e0 la corrosion<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-fdcf770 elementor-widget elementor-widget-text-editor\" data-id=\"fdcf770\" data-element_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>Les propri\u00e9t\u00e9s exceptionnelles de l'acier inoxydable proviennent d'un ph\u00e9nom\u00e8ne naturel appel\u00e9 passivation. Ce m\u00e9canisme implique une r\u00e9action chimique entre le chrome et l'oxyg\u00e8ne.<\/p><ol><li><b>Le r\u00f4le du chrome :<br \/><\/b>L'acier inoxydable contient un minimum de 10,5% de chrome.<\/li><li><strong>Formation d'un film passif<\/strong>:<br \/>Lorsque le chrome est expos\u00e9 \u00e0 l'air ou \u00e0 l'eau, il forme instantan\u00e9ment une fine couche transparente d'oxyde de chrome (Cr<sub>2<\/sub>O<sub>3<\/sub>).<\/li><li><b>Auto-gu\u00e9rison :<br \/><\/b>Ce film protecteur est non poreux et tr\u00e8s stable. Si la surface est ray\u00e9e, le film se r\u00e9g\u00e9n\u00e8re imm\u00e9diatement, \u00e0 condition que de l'oxyg\u00e8ne soit disponible. Cette capacit\u00e9 d'auto-gu\u00e9rison conf\u00e8re au mat\u00e9riau sa qualit\u00e9 inoxydable.<\/li><\/ol>\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<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-a3a5aa5 elementor-section-content-middle elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"a3a5aa5\" data-element_type=\"section\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-no\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-6ba0c51\" data-id=\"6ba0c51\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-9b07b2a elementor-widget__width-initial elementor-widget elementor-widget-heading\" data-id=\"9b07b2a\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Ce que nous faisons<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4069cd6 elementor-drop-cap-yes elementor-widget__width-initial elementor-drop-cap-view-default elementor-widget elementor-widget-text-editor\" data-id=\"4069cd6\" data-element_type=\"widget\" data-settings=\"{&quot;drop_cap&quot;:&quot;yes&quot;}\" 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<ul><li>Plaque<\/li><li>Feuille<\/li><li>Forgeage<\/li><li>Barre ronde<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-831548b elementor-drop-cap-yes elementor-widget__width-initial elementor-drop-cap-view-default elementor-widget elementor-widget-text-editor\" data-id=\"831548b\" data-element_type=\"widget\" data-settings=\"{&quot;drop_cap&quot;:&quot;yes&quot;}\" 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<ul><li>Bride<\/li><li>Tuyaux<\/li><li>Raccords<\/li><li>Sur mesure<\/li><\/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<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-abcdc6d\" data-id=\"abcdc6d\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-9468137 elementor-widget__width-initial elementor-widget elementor-widget-text-editor\" data-id=\"9468137\" data-element_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>Contactez-nous pour plus d'informations\u00a0<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3838b40 elementor-align-center elementor-mobile-align-center elementor-widget__width-initial elementor-widget elementor-widget-button\" data-id=\"3838b40\" data-element_type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm elementor-animation-grow\" href=\"#elementor-action%3Aaction%3Dpopup%3Aopen%26settings%3DeyJpZCI6IjQ2ODEzIiwidG9nZ2xlIjpmYWxzZX0%3D\" target=\"_blank\" id=\"#241018\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">Nous contacter<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\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<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-8f58f2e elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"8f58f2e\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-a85f61c\" data-id=\"a85f61c\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-6b53809 elementor-widget elementor-widget-heading\" data-id=\"6b53809\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Facteurs compromettant la r\u00e9sistance \u00e0 la corrosion<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-bb43b0a elementor-widget elementor-widget-text-editor\" data-id=\"bb43b0a\" data-element_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>Bien que l'acier inoxydable soit tr\u00e8s r\u00e9sistant, il n'est pas \u00e0 l'abri de toutes les formes d'attaque.Certaines conditions peuvent rompre la couche passive, entra\u00eenant une corrosion localis\u00e9e.Les ing\u00e9nieurs doivent reconna\u00eetre ces menaces afin d'\u00e9viter les d\u00e9faillances.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-dad3f23 elementor-widget elementor-widget-accordion\" data-id=\"dad3f23\" data-element_type=\"widget\" data-widget_type=\"accordion.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-accordion\">\n\t\t\t\t\t\t\t<div class=\"elementor-accordion-item\">\n\t\t\t\t\t<div id=\"elementor-tab-title-2291\" class=\"elementor-tab-title\" data-tab=\"1\" role=\"button\" aria-controls=\"elementor-tab-content-2291\" aria-expanded=\"false\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon elementor-accordion-icon-left\" aria-hidden=\"true\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-closed\"><i class=\"fas fa-plus\"><\/i><\/span>\n\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-opened\"><i class=\"fas fa-minus\"><\/i><\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-accordion-title\" tabindex=\"0\">Concentration de chlorure<\/a>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<div id=\"elementor-tab-content-2291\" class=\"elementor-tab-content elementor-clearfix\" data-tab=\"1\" role=\"region\" aria-labelledby=\"elementor-tab-title-2291\"><p>Des niveaux \u00e9lev\u00e9s d'ions chlorure, courants dans l'eau sal\u00e9e ou l'eau de Javel, sont tr\u00e8s destructeurs. Les chlorures d\u00e9composent chimiquement le film passif localement, ce qui conduit directement \u00e0 la corrosion par piq\u00fbres et \u00e0 la corrosion par crevasses.<\/p><\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<div class=\"elementor-accordion-item\">\n\t\t\t\t\t<div id=\"elementor-tab-title-2292\" class=\"elementor-tab-title\" data-tab=\"2\" role=\"button\" aria-controls=\"elementor-tab-content-2292\" aria-expanded=\"false\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon elementor-accordion-icon-left\" aria-hidden=\"true\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-closed\"><i class=\"fas fa-plus\"><\/i><\/span>\n\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-opened\"><i class=\"fas fa-minus\"><\/i><\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-accordion-title\" tabindex=\"0\">Environnements \u00e0 faible teneur en oxyg\u00e8ne<\/a>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<div id=\"elementor-tab-content-2292\" class=\"elementor-tab-content elementor-clearfix\" data-tab=\"2\" role=\"region\" aria-labelledby=\"elementor-tab-title-2292\"><p>Les zones stagnantes (telles que les joints ou les assemblages boulonn\u00e9s) emp\u00eachent l'acc\u00e8s de l'oxyg\u00e8ne \u00e0 la surface. Dans des conditions de manque d'oxyg\u00e8ne, le film de passivation ne peut pas s'auto-r\u00e9parer, ce qui acc\u00e9l\u00e8re la corrosion localis\u00e9e dans ces zones.<\/p><\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<div class=\"elementor-accordion-item\">\n\t\t\t\t\t<div id=\"elementor-tab-title-2293\" class=\"elementor-tab-title\" data-tab=\"3\" role=\"button\" aria-controls=\"elementor-tab-content-2293\" aria-expanded=\"false\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon elementor-accordion-icon-left\" aria-hidden=\"true\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-closed\"><i class=\"fas fa-plus\"><\/i><\/span>\n\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-opened\"><i class=\"fas fa-minus\"><\/i><\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-accordion-title\" tabindex=\"0\">Temp\u00e9rature<\/a>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<div id=\"elementor-tab-content-2293\" class=\"elementor-tab-content elementor-clearfix\" data-tab=\"3\" role=\"region\" aria-labelledby=\"elementor-tab-title-2293\"><p data-path-to-node=\"7,2,0\">Les temp\u00e9ratures \u00e9lev\u00e9es augmentent la vitesse des r\u00e9actions chimiques et le d\u00e9passement de la temp\u00e9rature critique de piq\u00fbre (CPT) du mat\u00e9riau augmente consid\u00e9rablement la vuln\u00e9rabilit\u00e9.<\/p><\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<div class=\"elementor-accordion-item\">\n\t\t\t\t\t<div id=\"elementor-tab-title-2294\" class=\"elementor-tab-title\" data-tab=\"4\" role=\"button\" aria-controls=\"elementor-tab-content-2294\" aria-expanded=\"false\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon elementor-accordion-icon-left\" aria-hidden=\"true\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-closed\"><i class=\"fas fa-plus\"><\/i><\/span>\n\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-opened\"><i class=\"fas fa-minus\"><\/i><\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-accordion-title\" tabindex=\"0\">Contamination de surface<\/a>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<div id=\"elementor-tab-content-2294\" class=\"elementor-tab-content elementor-clearfix\" data-tab=\"4\" role=\"region\" aria-labelledby=\"elementor-tab-title-2294\"><p>Les particules d'acier au carbone ou de fer incrust\u00e9es dans les outils de coupe peuvent \u00eatre transf\u00e9r\u00e9es sur la surface inoxydable. Ces particules rouillent facilement. Ce processus consomme l'oxyg\u00e8ne local, ce qui entra\u00eene la rupture de la couche passive sous-jacente.<\/p><\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/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<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-253f479 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"253f479\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-7d9d918\" data-id=\"7d9d918\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-06ced4b elementor-widget elementor-widget-heading\" data-id=\"06ced4b\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Am\u00e9lioration de la r\u00e9sistance \u00e0 la corrosion par le choix de la qualit\u00e9<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-831ad3f elementor-widget elementor-widget-text-editor\" data-id=\"831ad3f\" data-element_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 choix du mat\u00e9riau est l'\u00e9tape la plus cruciale pour garantir des performances \u00e0 long terme. Des \u00e9l\u00e9ments d'alliage sp\u00e9cifiques sont ajout\u00e9s pour adapter l'acier \u00e0 des conditions extr\u00eames.<\/p><ul><li data-path-to-node=\"10,0,0\"><b>Molybd\u00e8ne (Mo) :<br \/><\/b>L'ajout de molybd\u00e8ne am\u00e9liore consid\u00e9rablement la r\u00e9sistance \u00e0 la corrosion par piq\u00fbres et par crevasses, en particulier dans les environnements chlor\u00e9s. Le grade 316, qui contient du molybd\u00e8ne, est de loin sup\u00e9rieur au grade 304 dans les environnements marins ou chimiques.<\/li><li data-path-to-node=\"10,1,0\"><b>Nickel (Ni) :<br \/><\/b>Le nickel stabilise la structure aust\u00e9nitique, ce qui augmente la t\u00e9nacit\u00e9 et la r\u00e9sistance globale \u00e0 la corrosion sous contrainte.<\/li><li data-path-to-node=\"10,2,0\"><b>Azote (N) :<br \/><\/b>L'azote renforce la solidit\u00e9 et am\u00e9liore encore la r\u00e9sistance aux piq\u00fbres. Cet \u00e9l\u00e9ment est essentiel dans les aciers inoxydables duplex \u00e0 haute performance.<\/li><\/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<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t<div class=\"elementor-element elementor-element-6b27bbd e-flex e-con-boxed e-con e-parent\" data-id=\"6b27bbd\" 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-5481598 elementor-cta--layout-image-right elementor-cta--mobile-layout-image-above elementor-cta--skin-classic elementor-animated-content elementor-bg-transform elementor-bg-transform-zoom-in elementor-widget elementor-widget-call-to-action\" data-id=\"5481598\" data-element_type=\"widget\" data-widget_type=\"call-to-action.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<a class=\"elementor-cta\" href=\"#elementor-action%3Aaction%3Dpopup%3Aopen%26settings%3DeyJpZCI6IjQ2ODEzIiwidG9nZ2xlIjpmYWxzZX0%3D\" target=\"_blank\">\n\t\t\t\t\t<div class=\"elementor-cta__bg-wrapper\">\n\t\t\t\t<div class=\"elementor-cta__bg elementor-bg\" style=\"background-image: url(https:\/\/www.kaysuns.com\/wp-content\/uploads\/2025\/12\/Corrosion-Resistance-of-Stainless-Steel-CTA-scaled.webp);\" role=\"img\" aria-label=\"R\u00e9sistance \u00e0 la corrosion de l&#039;acier inoxydable - CTA\"><\/div>\n\t\t\t\t<div class=\"elementor-cta__bg-overlay\"><\/div>\n\t\t\t<\/div>\n\t\t\t\t\t\t\t<div class=\"elementor-cta__content\">\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t<h2 class=\"elementor-cta__title elementor-cta__content-item elementor-content-item\">\n\t\t\t\t\t\tN'h\u00e9sitez pas \u00e0 nous contacter\t\t\t\t\t<\/h2>\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-cta__description elementor-cta__content-item elementor-content-item\">\n\t\t\t\t\t\tKAYSUNS propose des solutions globales pour les mat\u00e9riaux de tuyauterie tels que les tuyaux, les raccords, les brides, les vannes, les plaques, les pi\u00e8ces forg\u00e9es, les lingots d'acier inoxydable, d'acier duplex et d'acier alli\u00e9, toutes sortes d'\u00e9l\u00e9ments de fixation (boulons, \u00e9crous, rondelles plates, rondelles bomb\u00e9es) et d'autres produits. Nous acceptons un service personnalis\u00e9 pour nos produits et certains d'entre eux peuvent \u00eatre fournis en petites quantit\u00e9s. Si vous avez des questions sur notre soci\u00e9t\u00e9 et nos produits, n'h\u00e9sitez pas \u00e0 nous contacter.\t\t\t\t\t<\/div>\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-cta__button-wrapper elementor-cta__content-item elementor-content-item\">\n\t\t\t\t\t<span class=\"elementor-cta__button elementor-button elementor-size-\">\n\t\t\t\t\t\tObtenir un devis\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/a>\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\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-59b4b46 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"59b4b46\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-f49e2a4\" data-id=\"f49e2a4\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-7e1bb1a elementor-widget elementor-widget-heading\" data-id=\"7e1bb1a\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Le r\u00f4le du PREN dans la pr\u00e9diction des performances<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3940a36 elementor-widget elementor-widget-text-editor\" data-id=\"3940a36\" data-element_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>L'indice \u00e9quivalent de r\u00e9sistance \u00e0 la piq\u00fbre (PREN) est un outil largement accept\u00e9 qui permet aux ing\u00e9nieurs de pr\u00e9voir la r\u00e9sistance relative de diff\u00e9rentes nuances d'acier inoxydable \u00e0 une attaque localis\u00e9e.<\/p><p align=\"center\"><strong>PREN = %Cr + 3,3(%Mo) + 16(%N)<\/strong><\/p><p>Une valeur PREN plus \u00e9lev\u00e9e indique une plus grande r\u00e9sistance \u00e0 la corrosion. Par exemple, la norme 316L a une valeur PREN d'environ 25. <a href=\"https:\/\/www.kaysuns.com\/fr\/2205-2507-duplex-pipe-supplier\/\" target=\"_blank\" rel=\"noopener\">Super Duplex 2507<\/a> d\u00e9passe souvent 40. Cela signifie que le Super Duplex est n\u00e9cessaire pour les applications offshore agressives ou les applications de traitement chimique.<\/p>\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<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-192bf01 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"192bf01\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-12a4427\" data-id=\"12a4427\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-480f428 elementor-widget elementor-widget-heading\" data-id=\"480f428\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Meilleures pratiques en mati\u00e8re de fabrication et d'entretien<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1edfcc8 elementor-widget elementor-widget-text-editor\" data-id=\"1edfcc8\" data-element_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>La qualit\u00e9 de la fabrication a un impact direct sur la r\u00e9sistance \u00e0 la corrosion du composant. Notre exp\u00e9rience op\u00e9rationnelle montre que ces \u00e9tapes sont cruciales :<\/p><ul><li data-path-to-node=\"17,0,0\"><b>S\u00e9gr\u00e9gation stricte :<br \/><\/b>Veillez \u00e0 ranger les outils en acier inoxydable s\u00e9par\u00e9ment des outils en acier au carbone afin d'\u00e9viter toute contamination de la surface.<\/li><li data-path-to-node=\"17,1,0\"><b>D\u00e9capage et passivation :<br \/><\/b>Apr\u00e8s le soudage, la zone de soudure est souvent endommag\u00e9e chimiquement. Le traitement chimique (d\u00e9capage) \u00e9limine la couche endommag\u00e9e. La passivation reconstruit ensuite enti\u00e8rement la couche passive.<\/li><li data-path-to-node=\"17,2,0\"><b>Nettoyage r\u00e9gulier :<br \/><\/b>Un nettoyage r\u00e9gulier de la surface permet d'\u00e9liminer les d\u00e9p\u00f4ts corrosifs tels que le sel et la salet\u00e9, \u00e9vitant ainsi une accumulation chimique localis\u00e9e qui pourrait compromettre la couche de passivation.<\/li><\/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<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-999ac14 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"999ac14\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-ecf8eca\" data-id=\"ecf8eca\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-140cb2c elementor-widget elementor-widget-heading\" data-id=\"140cb2c\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">R\u00e9sistance \u00e0 la corrosion des aciers inoxydables courants<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-191db5c elementor-widget elementor-widget-text-editor\" data-id=\"191db5c\" data-element_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<table>\n<tbody>\n<tr bgcolor=\"#00a0e9\">\n<th>Grade (ASTM)<\/th>\n<th>Principaux alliages<\/th>\n<th>Valeur PREN (typique)<\/th>\n<th>Application primaire<\/th>\n<\/tr>\n<tr>\n<td bgcolor=\"#05B8E4\">304\/304L<\/td>\n<td>Cr, Ni<\/td>\n<td>18<\/td>\n<td>Industrie g\u00e9n\u00e9rale, Transformation des aliments<\/td>\n<\/tr>\n<tr>\n<td bgcolor=\"#05B8E4\">316\/316L<\/td>\n<td>Cr, Ni, Mo<\/td>\n<td>25<\/td>\n<td>Marine douce, Traitement chimique<\/td>\n<\/tr>\n<tr>\n<td bgcolor=\"#05B8E4\">2205 (Duplex)<\/td>\n<td>Cr, Ni, Mo, N<\/td>\n<td>35<\/td>\n<td>Tuyauterie \u00e0 haute r\u00e9sistance, R\u00e9sistance \u00e0 la corrosion sous contrainte<\/td>\n<\/tr>\n<tr>\n<td bgcolor=\"#05B8E4\">2507 (Super Duplex)<\/td>\n<td>Forte teneur en Cr, Mo, N<\/td>\n<td>42<\/td>\n<td>Plates-formes offshore, usines de dessalement<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\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<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-07662d1 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"07662d1\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-88bd522\" data-id=\"88bd522\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-4139799 elementor-widget elementor-widget-heading\" data-id=\"4139799\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">M\u00e9thodes d'essai de la r\u00e9sistance \u00e0 la corrosion<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1f6b13a elementor-widget elementor-widget-text-editor\" data-id=\"1f6b13a\" data-element_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<table>\n<tbody>\n<tr bgcolor=\"#00a0e9\">\n<th>M\u00e9thode d'essai (ASTM)<\/th>\n<th>Objectif<\/th>\n<th>Indication d'une d\u00e9faillance mat\u00e9rielle<\/th>\n<\/tr>\n<tr>\n<td bgcolor=\"#05B8E4\">G48<\/td>\n<td>Mesure la r\u00e9sistance \u00e0 la piq\u00fbre et \u00e0 la crevaison<\/td>\n<td>Perte de poids, densit\u00e9 de la fosse<\/td>\n<\/tr>\n<tr>\n<td bgcolor=\"#05B8E4\">A262 Pratique E<\/td>\n<td>Corrosion intergranulaire (essai de soudure)<\/td>\n<td>Sensibilisation (appauvrissement en chrome)<\/td>\n<\/tr>\n<tr>\n<td bgcolor=\"#05B8E4\">G39<\/td>\n<td>Fissuration par corrosion sous contrainte (FSC)<\/td>\n<td>Temps de rupture sous tension<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\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<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-2887a41 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"2887a41\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-889a512\" data-id=\"889a512\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-fae2fab elementor-widget elementor-widget-heading\" data-id=\"fae2fab\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Nous contacter<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-d6403d4 elementor-widget-divider--view-line_text elementor-widget-divider--element-align-left elementor-widget elementor-widget-divider\" data-id=\"d6403d4\" data-element_type=\"widget\" data-widget_type=\"divider.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-divider\">\n\t\t\t<span class=\"elementor-divider-separator\">\n\t\t\t\t\t\t\t<span class=\"elementor-divider__text elementor-divider__element\">\n\t\t\t\tPrendre contact\t\t\t\t<\/span>\n\t\t\t\t\t\t<\/span>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2540801 elementor-align-start elementor-widget__width-initial elementor-icon-list--layout-traditional elementor-list-item-link-full_width elementor-widget elementor-widget-icon-list\" data-id=\"2540801\" data-element_type=\"widget\" data-widget_type=\"icon-list.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<ul class=\"elementor-icon-list-items\">\n\t\t\t\t\t\t\t<li 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