{"id":1779,"date":"2018-09-16T14:43:35","date_gmt":"2018-09-16T14:43:35","guid":{"rendered":"https:\/\/wldstainless.com\/?p=1779"},"modified":"2020-09-17T08:39:20","modified_gmt":"2020-09-17T08:39:20","slug":"what-is-ferritic-stainless-steel-used-for","status":"publish","type":"post","link":"https:\/\/wldstainless.com\/fr\/what-is-ferritic-stainless-steel-used-for\/","title":{"rendered":"\u00c0 quoi sert l\u2019acier inoxydable ferritique ?"},"content":{"rendered":"<p>L\u2019acier inoxydable ferritique d\u00e9signe l\u2019acier inoxydable avec une structure de ferrite \u00e0 cristal cubique de 11 % \u00e0 30% Cr. Sa teneur \u00e9lev\u00e9e en chrome est l\u2019\u00e9l\u00e9ment principal qui affecte ses performances. Les avantages de l\u2019acier inoxydable ferritique comprennent un faible co\u00fbt (sans nickel), une bonne conductivit\u00e9 magn\u00e9tique, une excellente r\u00e9sistance \u00e0 la corrosion due \u00e0 des contraintes ; une faible tendance \u00e0 l\u2019endurissement lors de la mise en \u0153uvre ; une facilit\u00e9 de pliage et de coupe \u00e0 froid ; une bonne conductivit\u00e9 thermique (1,5 fois celle de l\u2019acier aust\u00e9nitique), un faible coefficient d\u2019expansion lin\u00e9aire (60% de l\u2019acier aust\u00e9nitique), mais aussi des inconv\u00e9nients \u00e9vidents tels que une faible plasticit\u00e9 et une faible r\u00e9sistance \u00e0 la post-traitement, des fissures faciles lors de la soudure. L\u2019acier inoxydable ferritique est principalement utilis\u00e9 dans des milieux oxydants et nitrur\u00e9s, adapt\u00e9 aux applications de transfert de chaleur et de circulation de chaleur ; il offre un large \u00e9ventail d\u2019applications.<\/p>\n<p>&nbsp;<\/p>\n<p><strong>Applications en architecture et en structure<\/strong><\/p>\n<p>L\u2019acier inoxydable ferritique est utilis\u00e9 comme rev\u00eatement de toit et de fa\u00e7ades des b\u00e2timents en raison de sa bonne r\u00e9sistance \u00e0 la corrosion atmosph\u00e9rique. Des aciers inoxydables ferritiques \u00e0 haut chrome utilis\u00e9s dans les zones c\u00f4ti\u00e8res ont \u00e9t\u00e9 d\u00e9velopp\u00e9s ; ceux \u00e0 haute teneur en chrome et en molybd\u00e8ne contiennent de grandes quantit\u00e9s de chrome et de molybd\u00e8ne et sont compl\u00e9t\u00e9s par de petites quantit\u00e9s de niobium et de titane. L\u2019acier contient en r\u00e9alit\u00e9 22% de chrome et 1,2% de molybd\u00e8ne. Des quantit\u00e9s suffisantes de chrome et de molybd\u00e8ne sont n\u00e9cessaires pour am\u00e9liorer la r\u00e9sistance \u00e0 la corrosion de l\u2019acier inoxydable. La zone de rouille de l\u2019acier inoxydable type 304 et du type 316 est devenue beaucoup plus importante avec l\u2019augmentation du nombre de cycles d\u2019essai p\u00e9riodiques de corrosion. En revanche, la zone de rouille de l\u2019acier inoxydable type 444 est devenue l\u00e9g\u00e8rement plus importante au cours des 600 premiers cycles d\u2019essai et a atteint un niveau de saturation apr\u00e8s des essais plus longs.<\/p>\n<p>&nbsp;<\/p>\n<p><strong>Industrie automobile<\/strong><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-1780 alignleft\" src=\"https:\/\/wldstainless.com\/wp-content\/uploads\/2020\/09\/automobile.png\" alt=\"\" width=\"423\" height=\"257\" srcset=\"https:\/\/wldstainless.com\/wp-content\/uploads\/2020\/09\/automobile.png 550w, https:\/\/wldstainless.com\/wp-content\/uploads\/2020\/09\/automobile-300x182.png 300w, https:\/\/wldstainless.com\/wp-content\/uploads\/2020\/09\/automobile-450x273.png 450w\" sizes=\"auto, (max-width: 423px) 100vw, 423px\" \/><\/p>\n<p>L\u2019acier inoxydable 409 ou 410L est utilis\u00e9 comme mat\u00e9riau pour les syst\u00e8mes de contr\u00f4le des \u00e9missions des \u00e9chappements des v\u00e9hicules, tels que les tuyaux avant, le tuyau central et le silencieux, en raison de sa r\u00e9sistance \u00e0 la corrosion intergranulaire, de sa formabilit\u00e9 et de sa r\u00e9sistance \u00e0 la chaleur. Ces derni\u00e8res ann\u00e9es, la temp\u00e9rature de fonctionnement des \u00e9chappements des v\u00e9hicules a augment\u00e9 en raison de la vitesse de conversion catalytique et de la r\u00e9duction des \u00e9missions de gaz nocifs tels que les NOx, les SOx et les hydrocarbures (HC). Cependant, la hausse de la temp\u00e9rature du carbure de chrome entra\u00eenera la formation de d\u00e9p\u00f4ts sur le silencieux, c\u2019est-\u00e0-dire que des temp\u00e9ratures de 400 \u00e0 500 \u00b0C provoqueront une corrosion des limites des grains. \u00c9tant donn\u00e9 que la zone de soudure est particuli\u00e8rement sensible \u00e0 la corrosion intergranulaire, il est n\u00e9cessaire d\u2019am\u00e9liorer la r\u00e9sistance \u00e0 la corrosion de l\u2019acier inoxydable ferritique contenant 12% Cr. Par cons\u00e9quent, une nouvelle acier inoxydable ferritique a \u00e9t\u00e9 d\u00e9velopp\u00e9e en ajoutant du niobium \u00e0 l\u2019acier contenant 12% Cr. Il est bien connu que la r\u00e9duction de la teneur en carbone et en azote dans l\u2019acier est tr\u00e8s efficace pour pr\u00e9venir la corrosion intercristalline. De cette mani\u00e8re, la r\u00e9sistance \u00e0 la corrosion intercristalline peut \u00eatre encore am\u00e9lior\u00e9e en ajoutant du niobium et du titane \u00e0 l\u2019acier. L\u2019acier inoxydable 409L est utilis\u00e9 comme mat\u00e9riau pour les collecteurs d\u2019\u00e9chappement des automobiles, et la temp\u00e9rature d\u2019\u00e9chappement est con\u00e7ue pour \u00eatre d\u2019environ 800 \u00b0C. L\u2019acier inoxydable 430J1L est recommand\u00e9 lorsque la temp\u00e9rature d\u2019\u00e9chappement est d\u2019environ 900 \u00b0C.<\/p>\n<p>&nbsp;<\/p>\n<p><strong>Appareils \u00e9lectrom\u00e9nagers et ustensiles de cuisine<\/strong><\/p>\n<p>L\u2019acier inoxydable ferritique de la s\u00e9rie 400 a \u00e9t\u00e9 largement accept\u00e9 dans le domaine des appareils m\u00e9nagers et de la vaisselle en raison de ses propri\u00e9t\u00e9s esth\u00e9tiques uniques, de sa r\u00e9sistance \u00e0 la corrosion des nettoyants et des d\u00e9sinfectants, de son faible coefficient d\u2019expansion thermique et de sa magn\u00e9tisation (adapt\u00e9 aux cuiseurs \u00e9lectromagn\u00e9tiques). L\u2019acier inoxydable ferritique r\u00e9duit consid\u00e9rablement le poids par rapport \u00e0 l\u2019acier carbon\u00e9. Les aciers inoxydables ferritiques ne contiennent pas de nickel et sont bien plus stables sur le plan financier que les aciers austenitiques, ce qui permet aux fabricants de mieux g\u00e9rer leurs co\u00fbts, l\u2019achat et la vente. L\u2019utilisation de l\u2019acier inoxydable ferritique est si large que chaque application requiert des performances diff\u00e9rentes. Les applications typiques comprennent les lave-vaisselle, les bouilloires \u00e9lectriques, les lave-linge, les poubelles, les drains de cuisine, les fours, les appareils \u00e0 gaz, les cafeti\u00e8res, les fours \u00e0 micro-ondes, les fours \u00e0 gaz, les syst\u00e8mes de stockage \u00e0 froid, les chariots de restaurant.<\/p>\n<p>&nbsp;<\/p>\n<p>L\u2019acier inoxydable ferritique est \u00e9galement utilis\u00e9 dans le transport et dans d\u2019autres applications industrielles. En raison de ses nombreux avantages par rapport \u00e0 l\u2019acier au carbone et \u00e0 l\u2019acier inoxydable aust\u00e9nitique, il pr\u00e9sente des propri\u00e9t\u00e9s d\u2019usinabilit\u00e9 excellentes telles que le pliage, le d\u00e9coupage et le per\u00e7age, ce qui en fait une mati\u00e8re tr\u00e8s polyvalente. \u00c9tant donn\u00e9 que les ferritiques pr\u00e9sentent de nombreux types, pour obtenir une bonne r\u00e9sistance \u00e0 la corrosion, une bonne r\u00e9sistance \u00e0 la rupture et un prix plus bas, il faut choisir le type appropri\u00e9 pour r\u00e9pondre aux besoins du client.<\/p>\n<table>\n<tbody>\n<tr>\n<td width=\"158\">Notes<\/td>\n<td width=\"190\">Composition chimique<\/td>\n<td width=\"260\">D\u00e9finir le caract\u00e8re<\/td>\n<td width=\"242\">Demandes<\/td>\n<\/tr>\n<tr>\n<td width=\"158\">409L<\/td>\n<td width=\"190\">11.3Cr-0.17Ti<\/p>\n<p>Basse concentration en C et en N<\/td>\n<td width=\"260\">L'ajout de titane lui conf\u00e8re une bonne r\u00e9sistance \u00e0 la corrosion \u00e0 haute temp\u00e9rature ainsi qu'une excellente solidit\u00e9.<\/td>\n<td width=\"242\">Raccordements d'\u00e9chappement d'automobiles, \u00e9changeurs de chaleur, conteneurs et autres produits non trait\u00e9s thermiquement apr\u00e8s la soudure.<\/td>\n<\/tr>\n<tr>\n<td width=\"158\">410L<\/td>\n<td width=\"190\">13Cr<\/p>\n<p>C faible<\/td>\n<td width=\"260\">Le C r\u00e9duit la base de 410, pr\u00e9sente de bonnes propri\u00e9t\u00e9s de traitement, r\u00e9sistance \u00e0 la d\u00e9formation lors de la soudure, et r\u00e9sistance \u00e0 l'oxydation \u00e0 haute temp\u00e9rature.<\/td>\n<td width=\"242\">Pi\u00e8ces pour la construction m\u00e9canique, les tuyaux d'\u00e9chappement des moteurs, les br\u00fbleurs des chaudi\u00e8res.<\/td>\n<\/tr>\n<tr>\n<td width=\"158\">430<\/td>\n<td width=\"190\">16Cr<\/td>\n<td width=\"260\">Les types d'acier ferrique les plus courants pr\u00e9sentent un taux d'expansion thermique faible, une excellente formabilit\u00e9 et une r\u00e9sistance \u00e0 l'oxydation.<\/td>\n<td width=\"242\">Appareils r\u00e9sistants \u00e0 la chaleur, br\u00fbleurs, appareils m\u00e9nagers, ustensiles de cuisine, lavabos, mat\u00e9riaux d\u00e9coratifs externes, boulons, \u00e9crous, vitrages<\/td>\n<\/tr>\n<tr>\n<td width=\"158\">430J1L<\/td>\n<td width=\"190\">18-Cr0.5Cu-Nb<\/p>\n<p>Haute qualit\u00e9 et faible consommation<\/td>\n<td width=\"260\">Ajout de Cu et de Nb, selon la norme 430, bonne r\u00e9sistance \u00e0 la corrosion, bonne formabilit\u00e9, bonne soudabilit\u00e9 et bonne r\u00e9sistance \u00e0 l\u2019oxydation \u00e0 haute temp\u00e9rature.<\/td>\n<td width=\"242\">Mat\u00e9riaux de d\u00e9coration ext\u00e9rieure des b\u00e2timents, pi\u00e8ces automobiles, \u00e9quipements de distribution d'eau chaude et froide.<\/td>\n<\/tr>\n<tr>\n<td width=\"158\">436L<\/td>\n<td width=\"190\">18Cr-1Mo-Ti, Nb, Zr<\/p>\n<p>Haute qualit\u00e9 et faible consommation<\/td>\n<td width=\"260\">Ajout de Nb, Zr, excellente r\u00e9sistance \u00e0 la chaleur et \u00e0 l'abrasion, bonne usinabilit\u00e9 et soudabilit\u00e9.<\/td>\n<td width=\"242\">Les lave-linge, les \u00e9chappements automobiles, l'\u00e9lectronique, les casseroles \u00e0 cuisiner.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>","protected":false},"excerpt":{"rendered":"<p>Ferrite stainless steel refers to the stainless steel with 11%~30%Cr and cubic crystal ferrite structure. Its high chromium content is the main element that affects its performance. The advantages of Ferritic stainless steel include low cost (without nickel), good magnetic conductivity, excellent stress corrosion resistance; Small working hardening tendency, easy to cold heading and cutting; [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":1781,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[23],"tags":[],"class_list":["post-1779","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.3 - aioseo.com -->\n\t<meta name=\"description\" content=\"Ferritic stainless steel is mainly used in oxidizing medium and nitride medium, suitable for heat exchange and heat circulation purposes, provides a wide range of applications.\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<meta name=\"author\" content=\"WLD Stainless\"\/>\n\t<link rel=\"canonical\" href=\"https:\/\/wldstainless.com\/fr\/what-is-ferritic-stainless-steel-used-for\/\" \/>\n\t\t<meta name=\"generator\" content=\"All in One SEO (AIOSEO) 5.0.3\" \/>\n\t\t<script type=\"application\/ld+json\" class=\"aioseo-schema\">\n\t\t\t{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/wldstainless.com\\\/fr\\\/what-is-ferritic-stainless-steel-used-for\\\/#article\",\"name\":\"What is Ferritic stainless steel used for? 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