{"id":5824,"date":"2020-04-15T07:14:59","date_gmt":"2020-04-15T07:14:59","guid":{"rendered":"https:\/\/www.kaysuns.com\/?p=5824"},"modified":"2025-07-01T06:35:24","modified_gmt":"2025-07-01T06:35:24","slug":"classification-des-grades-et-normes-de-lacier-inoxydable-duplex","status":"publish","type":"blog","link":"https:\/\/www.kaysuns.com\/fr\/blog\/classification-des-grades-et-normes-de-lacier-inoxydable-duplex\/","title":{"rendered":"Classification, nuances et normes de l'acier inoxydable duplex"},"content":{"rendered":"

Introduction en acier inoxydable duplex<\/h2>\n\n\n\n

L'acier inoxydable duplex fait r\u00e9f\u00e9rence au mat\u00e9riau dont la microstructure est compos\u00e9e de ferrite et d'aust\u00e9nite, chacune repr\u00e9sentant environ 50%. En utilisation r\u00e9elle, l'un d'eux est plus adapt\u00e9 entre 40-60%.<\/p>\n\n\n\n

Selon les caract\u00e9ristiques des deux structures, gr\u00e2ce au contr\u00f4le correct de la composition chimique et du processus de traitement thermique, l'excellente t\u00e9nacit\u00e9 et soudabilit\u00e9 de l'acier inoxydable aust\u00e9nitique sont combin\u00e9es \u00e0 la r\u00e9sistance et \u00e0 la r\u00e9sistance plus \u00e9lev\u00e9es \u00e0 la corrosion sous contrainte de chlorure de l'acier inoxydable ferritique. acier inoxydable un type d'acier qui combine une excellente r\u00e9sistance \u00e0 la corrosion, une haute r\u00e9sistance et un traitement et une fabrication faciles.<\/p>\n\n\n\n

Les propri\u00e9t\u00e9s physiques de l'acier inoxydable duplex se situent entre l'acier inoxydable aust\u00e9nitique et l'acier inoxydable ferritique, mais sont plus proches de l'acier inoxydable ferritique et de l'acier au carbone.<\/p>\n\n\n\n

La r\u00e9sistance \u00e0 la corrosion et la r\u00e9sistance \u00e0 la corrosion caverneuse des tuyaux en acier inoxydable duplex sont li\u00e9es \u00e0 la teneur en chrome, molybd\u00e8ne<\/a> et de l'azote. La r\u00e9sistance \u00e0 la corrosion et la r\u00e9sistance \u00e0 la corrosion caverneuse de la tuyaux en acier inoxydable duplex<\/a> peut \u00eatre similaire \u00e0 316 tuyaux en acier inoxydable<\/a> ou plus haut que l'eau de mer tuyaux en acier inoxydable<\/a> comme le tube en acier inoxydable 6%.<\/p>\n\n\n\n

Tous les aciers inoxydables duplex sont nettement plus r\u00e9sistants aux chlorures. fissuration par corrosion sous contrainte<\/a> que les aciers inoxydables aust\u00e9nitiques de la s\u00e9rie 300, et leur r\u00e9sistance est beaucoup plus \u00e9lev\u00e9e que celle des aciers inoxydables aust\u00e9nitiques. Ils pr\u00e9sentent \u00e9galement une bonne plasticit\u00e9 et une bonne t\u00e9nacit\u00e9.<\/p>\n\n\n\n

L'acier inoxydable duplex peut \u00eatre g\u00e9n\u00e9ralement divis\u00e9 en quatre types : type faiblement alli\u00e9, type alliage moyen, type fortement alli\u00e9 et type acier inoxydable super duplex.<\/p>\n\n\n\n

Consultez notre Liste des stocks de tubes Super Duplex 2507<\/a> ici.<\/p>\n\n\n\n

Les nuances d'acier inoxydable duplex courantes et la comparaison approximative des nuances sont les suivantes\u00a0:<\/strong><\/p>\n\n\n\n

\n \n \n \n \n \n \n \n \n \n
Types\/Pays<\/strong><\/td>\n CHINE<\/strong><\/td>\n Etats-Unis<\/strong><\/td>\n SWEFEN<\/strong><\/td>\n ALLEMAGNE<\/strong><\/td>\n LA FRANCE<\/strong><\/td>\n JAPON<\/strong><\/td>\n <\/tr>\n
type faiblement alli\u00e9<\/strong><\/td>\n 00Cr23Ni4N<\/td>\n UN23<\/td>\n SS232<\/td>\n W\uff0eNr.1.4362<\/td>\n UR35N<\/td>\n DP11<\/td>\n <\/tr>\n
<\/td>\n (SAF2304)<\/td>\n (SAF2304)<\/td>\n <\/td>\n <\/td>\n <\/td>\n <\/tr>\n
type d'alliage moyen<\/strong><\/td>\n 00Cr18Ni5Mo3Si2<\/td>\n UNS S31500<\/td>\n SS2376 (3RE60)<\/td>\n W.Nr.1.4417<\/td>\n UR45N<\/td>\n DP1<\/td>\n <\/tr>\n
00Cr22Ni5Mo3N<\/td>\n UNS S31803<\/td>\n SS2377 (SAF2205)<\/td>\n W.Nr.1.4462<\/td>\n <\/td>\n DP8<\/td>\n <\/tr>\n
type d'alliage \u00e9lev\u00e9<\/strong><\/td>\n 0Cr25Ni5Mo2<\/td>\n UNS S32900<\/td>\n SS2324 (10RE51)<\/td>\n W.Nr.1.4460<\/td>\n <\/td>\n 329J1<\/td>\n <\/tr>\n
00Cr25Ni7Mo3WCuN<\/td>\n UNS S31260<\/td>\n <\/td>\n W.Nr.1.4501<\/td>\n <\/td>\n 329J2L<\/td>\n <\/tr>\n
type super duplex en acier inoxydable<\/strong><\/td>\n 00Cr25Ni7Mo4N<\/td>\n UNS S32750<\/td>\n SS2328 (SAF2507)<\/td>\n W.Nr.1.4410<\/td>\n <\/td>\n UR47N+<\/td>\n <\/tr>\n
00Cr25Ni6Mo3CuN<\/td>\n UNS S32550<\/td>\n <\/td>\n W.Nr.1.4507<\/td>\n <\/td>\n UR52N+<\/td>\n <\/tr>\n<\/table><\/figure>\n\n\n\n

Performances des aciers inoxydables duplex :<\/strong><\/p>\n\n\n\n

    \n
  • 1. Composition chimique (%)<\/li>\n<\/ul>\n\n\n\n
    \n \n \n \n \n \n \n \n
    Notes<\/td>\n C\u2264<\/td>\n Mn\u2264<\/td>\n Si\u2264<\/td>\n S\u2264<\/td>\n P\u2264<\/td>\n Cr<\/td>\n Ni<\/td>\n Mo<\/td>\n Cu\u2264<\/td>\n N<\/td>\n <\/tr>\n
    S32750(SAF2507)<\/td>\n 0.03<\/td>\n 1.2<\/td>\n 0.8<\/td>\n 0.02<\/td>\n 0.035<\/td>\n 24.0<\/td>\n 6.0<\/td>\n 3.0<\/td>\n 0.5<\/td>\n 0.24<\/td>\n <\/tr>\n
    00Cr22Ni7Mo4N<\/td>\n 26<\/td>\n 8<\/td>\n 5<\/td>\n 0.32<\/td>\n <\/tr>\n
    S31803 (SAF2205)<\/td>\n 0.03<\/td>\n 2<\/td>\n 1<\/td>\n 0.02<\/td>\n 0.03<\/td>\n 21.0<\/td>\n 4.50<\/td>\n 2.50<\/td>\n \u3000<\/td>\n 0.08<\/td>\n <\/tr>\n
    00Cr22Ni5Mo3N<\/td>\n 23<\/td>\n 6.5<\/td>\n 3.5<\/td>\n 0.2<\/td>\n <\/tr>\n
    S31500 (3RE60)<\/td>\n 0.03<\/td>\n 1.2<\/td>\n 1. 4<\/td>\n 0.03<\/td>\n 0.03<\/td>\n 18.0<\/td>\n 4.25<\/td>\n 2.50<\/td>\n \u3000<\/td>\n 0.05<\/td>\n <\/tr>\n
    00Cr18Ni5Mo3Si2<\/td>\n 2<\/td>\n 2<\/td>\n 19<\/td>\n 5.25<\/td>\n 2<\/td>\n 0.1<\/td>\n <\/tr>\n<\/table><\/figure>\n\n\n\n
      \n
    • 2. Composition chimique (%)<\/li>\n<\/ul>\n\n\n\n
      \n \n \n \n \n \n \n \n
      \u3000<\/td>\n Temp\u00e9rature de traitement thermique\u2103<\/td>\n Ab\uff08MPa\uff09\u2265<\/td>\n As\uff08MPa\uff09\u2265<\/td>\n ??<\/td>\n Duret\u00e9 Brinell<\/td>\n Duret\u00e9 Rockwell<\/td>\n <\/tr>\n
      S32750\uff08SAF2507\uff09<\/td>\n 1025-1125<\/td>\n 800<\/td>\n 550<\/td>\n 15<\/td>\n 310<\/td>\n 32<\/td>\n <\/tr>\n
      00Cr22Ni5Mo3N<\/td>\n L'EAU<\/td>\n <\/tr>\n
      S31803\uff08SAF2205\uff09<\/td>\n 1020-1100<\/td>\n 620<\/td>\n 450<\/td>\n 25<\/td>\n 290<\/td>\n 30.5<\/td>\n <\/tr>\n
      00Cr22Ni5Mo3N<\/td>\n <\/tr>\n
      S31500\uff083RE60\uff09<\/td>\n 980-1040<\/td>\n 630<\/td>\n 440<\/td>\n 30<\/td>\n 290<\/td>\n 30.5<\/td>\n <\/tr>\n
      00Cr18Ni5Mo3Si2<\/td>\n <\/tr>\n<\/table><\/figure>\n\n\n\n
        \n
      • 3. La plage de temp\u00e9rature d'utilisation continue de l'acier inoxydable duplex est de -50 -60 \u2103. La temp\u00e9rature de travail \u00e0 chaud ne doit pas \u00eatre inf\u00e9rieure \u00e0 950 \u2103.<\/li>\n<\/ul>","protected":false},"featured_media":5188,"template":"","categories":[186],"tags":[],"class_list":["post-5824","blog","type-blog","status-publish","has-post-thumbnail","hentry","category-stainless-steel-knowledge"],"yoast_head":"\nClassification, Grades And Standards Of Duplex Stainless Steel - Stainless Steel Pipe and Fittings | KAYSUNS<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.kaysuns.com\/fr\/blog\/classification-des-grades-et-normes-de-lacier-inoxydable-duplex\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Classification, Grades And Standards Of Duplex Stainless Steel - Stainless Steel Pipe and Fittings | KAYSUNS\" \/>\n<meta property=\"og:description\" content=\"Duplex stainless steel introduction Duplex stainless steel refers to the material whose microstructure is composed of ferrite and austenite, each of which accounts for about 50%. In actual use, one of them is more suitable between 40-60%. According to the characteristics of the two structures, through the correct control of the chemical composition and heat… Read More »Classification, Grades And Standards Of Duplex Stainless Steel\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.kaysuns.com\/fr\/blog\/classification-des-grades-et-normes-de-lacier-inoxydable-duplex\/\" \/>\n<meta property=\"og:site_name\" content=\"Stainless Steel Pipe and Fittings | KAYSUNS\" \/>\n<meta property=\"article:modified_time\" content=\"2025-07-01T06:35:24+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.kaysuns.com\/wp-content\/uploads\/2015\/11\/20190816140342.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1080\" \/>\n\t<meta property=\"og:image:height\" content=\"810\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Dur\u00e9e de lecture estim\u00e9e\" \/>\n\t<meta name=\"twitter:data1\" content=\"3 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.kaysuns.com\/blog\/classification-grades-and-standards-of-duplex-stainless-steel\/\",\"url\":\"https:\/\/www.kaysuns.com\/blog\/classification-grades-and-standards-of-duplex-stainless-steel\/\",\"name\":\"Classification, Grades And Standards Of Duplex Stainless Steel - Stainless Steel Pipe and Fittings | KAYSUNS\",\"isPartOf\":{\"@id\":\"https:\/\/www.kaysuns.com\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/www.kaysuns.com\/blog\/classification-grades-and-standards-of-duplex-stainless-steel\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/www.kaysuns.com\/blog\/classification-grades-and-standards-of-duplex-stainless-steel\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/www.kaysuns.com\/wp-content\/uploads\/2015\/11\/20190816140342.jpg\",\"datePublished\":\"2020-04-15T07:14:59+00:00\",\"dateModified\":\"2025-07-01T06:35:24+00:00\",\"breadcrumb\":{\"@id\":\"https:\/\/www.kaysuns.com\/blog\/classification-grades-and-standards-of-duplex-stainless-steel\/#breadcrumb\"},\"inLanguage\":\"fr-FR\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/www.kaysuns.com\/blog\/classification-grades-and-standards-of-duplex-stainless-steel\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"fr-FR\",\"@id\":\"https:\/\/www.kaysuns.com\/blog\/classification-grades-and-standards-of-duplex-stainless-steel\/#primaryimage\",\"url\":\"https:\/\/www.kaysuns.com\/wp-content\/uploads\/2015\/11\/20190816140342.jpg\",\"contentUrl\":\"https:\/\/www.kaysuns.com\/wp-content\/uploads\/2015\/11\/20190816140342.jpg\",\"width\":1080,\"height\":810,\"caption\":\"duplex stainless steel pipes\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/www.kaysuns.com\/blog\/classification-grades-and-standards-of-duplex-stainless-steel\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/www.kaysuns.com\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Classification, Grades And Standards Of Duplex Stainless Steel\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/www.kaysuns.com\/#website\",\"url\":\"https:\/\/www.kaysuns.com\/\",\"name\":\"Stainless Steel Pipe and Fittings | KAYSUNS\",\"description\":\"Stainless Steel Pipe & Fittings Manufacturer and Supplier in China\",\"publisher\":{\"@id\":\"https:\/\/www.kaysuns.com\/#organization\"},\"alternateName\":\"KAYSUNS\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/www.kaysuns.com\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"fr-FR\"},{\"@type\":\"Organization\",\"@id\":\"https:\/\/www.kaysuns.com\/#organization\",\"name\":\"Kaysuns Industry Ltd.\",\"url\":\"https:\/\/www.kaysuns.com\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"fr-FR\",\"@id\":\"https:\/\/www.kaysuns.com\/#\/schema\/logo\/image\/\",\"url\":\"https:\/\/www.kaysuns.com\/wp-content\/uploads\/2019\/12\/cropped-neve-industrial-logo-1.png\",\"contentUrl\":\"https:\/\/www.kaysuns.com\/wp-content\/uploads\/2019\/12\/cropped-neve-industrial-logo-1.png\",\"width\":52,\"height\":59,\"caption\":\"Kaysuns Industry Ltd.\"},\"image\":{\"@id\":\"https:\/\/www.kaysuns.com\/#\/schema\/logo\/image\/\"}}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Classification, grades et normes de l'acier inoxydable duplex - Tubes et raccords en acier inoxydable | KAYSUNS","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.kaysuns.com\/fr\/blog\/classification-des-grades-et-normes-de-lacier-inoxydable-duplex\/","og_locale":"fr_FR","og_type":"article","og_title":"Classification, Grades And Standards Of Duplex Stainless Steel - Stainless Steel Pipe and Fittings | KAYSUNS","og_description":"Duplex stainless steel introduction Duplex stainless steel refers to the material whose microstructure is composed of ferrite and austenite, each of which accounts for about 50%. In actual use, one of them is more suitable between 40-60%. According to the characteristics of the two structures, through the correct control of the chemical composition and heat… Read More »Classification, Grades And Standards Of Duplex Stainless Steel","og_url":"https:\/\/www.kaysuns.com\/fr\/blog\/classification-des-grades-et-normes-de-lacier-inoxydable-duplex\/","og_site_name":"Stainless Steel Pipe and Fittings | KAYSUNS","article_modified_time":"2025-07-01T06:35:24+00:00","og_image":[{"width":1080,"height":810,"url":"https:\/\/www.kaysuns.com\/wp-content\/uploads\/2015\/11\/20190816140342.jpg","type":"image\/jpeg"}],"twitter_card":"summary_large_image","twitter_misc":{"Dur\u00e9e de lecture estim\u00e9e":"3 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/www.kaysuns.com\/blog\/classification-grades-and-standards-of-duplex-stainless-steel\/","url":"https:\/\/www.kaysuns.com\/blog\/classification-grades-and-standards-of-duplex-stainless-steel\/","name":"Classification, grades et normes de l'acier inoxydable duplex - Tubes et raccords en acier inoxydable | KAYSUNS","isPartOf":{"@id":"https:\/\/www.kaysuns.com\/#website"},"primaryImageOfPage":{"@id":"https:\/\/www.kaysuns.com\/blog\/classification-grades-and-standards-of-duplex-stainless-steel\/#primaryimage"},"image":{"@id":"https:\/\/www.kaysuns.com\/blog\/classification-grades-and-standards-of-duplex-stainless-steel\/#primaryimage"},"thumbnailUrl":"https:\/\/www.kaysuns.com\/wp-content\/uploads\/2015\/11\/20190816140342.jpg","datePublished":"2020-04-15T07:14:59+00:00","dateModified":"2025-07-01T06:35:24+00:00","breadcrumb":{"@id":"https:\/\/www.kaysuns.com\/blog\/classification-grades-and-standards-of-duplex-stainless-steel\/#breadcrumb"},"inLanguage":"fr-FR","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.kaysuns.com\/blog\/classification-grades-and-standards-of-duplex-stainless-steel\/"]}]},{"@type":"ImageObject","inLanguage":"fr-FR","@id":"https:\/\/www.kaysuns.com\/blog\/classification-grades-and-standards-of-duplex-stainless-steel\/#primaryimage","url":"https:\/\/www.kaysuns.com\/wp-content\/uploads\/2015\/11\/20190816140342.jpg","contentUrl":"https:\/\/www.kaysuns.com\/wp-content\/uploads\/2015\/11\/20190816140342.jpg","width":1080,"height":810,"caption":"duplex stainless steel pipes"},{"@type":"BreadcrumbList","@id":"https:\/\/www.kaysuns.com\/blog\/classification-grades-and-standards-of-duplex-stainless-steel\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/www.kaysuns.com\/"},{"@type":"ListItem","position":2,"name":"Classification, Grades And Standards Of Duplex Stainless Steel"}]},{"@type":"WebSite","@id":"https:\/\/www.kaysuns.com\/#website","url":"https:\/\/www.kaysuns.com\/","name":"Tubes et raccords en acier inoxydable | KAYSUNS","description":"Tubes et raccords en acier inoxydable Fabricant et Fournisseur en Chine","publisher":{"@id":"https:\/\/www.kaysuns.com\/#organization"},"alternateName":"KAYSUNS","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.kaysuns.com\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"fr-FR"},{"@type":"Organization","@id":"https:\/\/www.kaysuns.com\/#organization","name":"Kaysuns Industry Ltd.","url":"https:\/\/www.kaysuns.com\/","logo":{"@type":"ImageObject","inLanguage":"fr-FR","@id":"https:\/\/www.kaysuns.com\/#\/schema\/logo\/image\/","url":"https:\/\/www.kaysuns.com\/wp-content\/uploads\/2019\/12\/cropped-neve-industrial-logo-1.png","contentUrl":"https:\/\/www.kaysuns.com\/wp-content\/uploads\/2019\/12\/cropped-neve-industrial-logo-1.png","width":52,"height":59,"caption":"Kaysuns Industry Ltd."},"image":{"@id":"https:\/\/www.kaysuns.com\/#\/schema\/logo\/image\/"}}]}},"_links":{"self":[{"href":"https:\/\/www.kaysuns.com\/fr\/wp-json\/wp\/v2\/blog\/5824","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.kaysuns.com\/fr\/wp-json\/wp\/v2\/blog"}],"about":[{"href":"https:\/\/www.kaysuns.com\/fr\/wp-json\/wp\/v2\/types\/blog"}],"version-history":[{"count":3,"href":"https:\/\/www.kaysuns.com\/fr\/wp-json\/wp\/v2\/blog\/5824\/revisions"}],"predecessor-version":[{"id":50995,"href":"https:\/\/www.kaysuns.com\/fr\/wp-json\/wp\/v2\/blog\/5824\/revisions\/50995"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.kaysuns.com\/fr\/wp-json\/wp\/v2\/media\/5188"}],"wp:attachment":[{"href":"https:\/\/www.kaysuns.com\/fr\/wp-json\/wp\/v2\/media?parent=5824"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.kaysuns.com\/fr\/wp-json\/wp\/v2\/categories?post=5824"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.kaysuns.com\/fr\/wp-json\/wp\/v2\/tags?post=5824"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}