{"id":5233,"date":"2019-08-29T08:38:32","date_gmt":"2019-08-29T08:38:32","guid":{"rendered":"https:\/\/www.kaysuns.com\/?p=5233"},"modified":"2025-07-01T06:38:37","modified_gmt":"2025-07-01T06:38:37","slug":"les-avantages-du-tube-duplex-2205","status":"publish","type":"blog","link":"https:\/\/www.kaysuns.com\/fr\/blog\/les-avantages-du-tube-duplex-2205\/","title":{"rendered":"Les avantages du tuyau Duplex 2205"},"content":{"rendered":"

Introduction pour Duplex 2205 Acier<\/h2>\n
\"Tuyau<\/a>
Tuyau duplex 2205<\/figcaption><\/figure>\n

Depuis la d\u00e9couverte de l'organisation en deux phases, l'acier inoxydable duplex qui a fait\u00a0tuyaux en acier inoxydable duplex<\/a> (appel\u00e9 \"acier duplex\") a \u00e9t\u00e9 d\u00e9velopp\u00e9 depuis trois g\u00e9n\u00e9rations :<\/p>\n

Le DSS (acier inoxydable duplex) de premi\u00e8re g\u00e9n\u00e9ration est repr\u00e9sent\u00e9 par l'acier 3RE60 d\u00e9velopp\u00e9 en Su\u00e8de au milieu des ann\u00e9es 1960 ;<\/p>\n

Le DSS de deuxi\u00e8me g\u00e9n\u00e9ration est repr\u00e9sent\u00e9 par 2205 d\u00e9velopp\u00e9 par la Su\u00e8de apr\u00e8s les ann\u00e9es 1970, et le PREN est 32~39 ;<\/p>\n

Le DSS de troisi\u00e8me g\u00e9n\u00e9ration est un acier inoxydable super duplex (SDSS) \u00e0 tr\u00e8s faible teneur en carbone et \u00e0 haute teneur en oxyg\u00e8ne. molybd\u00e8ne<\/a> et \u00e0 forte teneur en azote qui s'est d\u00e9velopp\u00e9e \u00e0 la fin des ann\u00e9es 1980. Ses nuances repr\u00e9sentatives sont les 2507, 2906, 2707, etc. La valeur PRE est importante aujourd'hui, nous parlons principalement de l'acier duplex 2205, le plus grand et le plus courant (les nuances internationales sont UNS S31803 et UNS S32205). En g\u00e9n\u00e9ral, l'acier duplex fait r\u00e9f\u00e9rence \u00e0 la nuance 2205 sans instructions sp\u00e9ciales.<\/p>\n

\"composition<\/a>
composition chimique du duplex 2205<\/figcaption><\/figure>\n

Avantages de l'acier duplex biphas\u00e9 aust\u00e9nite + ferrite<\/h2>\n

\"tuyaux<\/a><\/p>\n

L'acier duplex est form\u00e9 \u00e0 base d'acier inoxydable aust\u00e9nitique 18-8, ce qui augmente la teneur en Cr ou ajoute d'autres \u00e9l\u00e9ments de ferrite, de sorte que l'acier a une structure biphasique aust\u00e9nite et ferrite et \u00e9conomise du nickel.<\/p>\n

Le rapport th\u00e9orique est de 1:1, soit environ 50%. G\u00e9n\u00e9ralement, une certaine phase est 40~60%.<\/p>\n

Sous faible contrainte, l'acier biphas\u00e9 contenant du chrome pr\u00e9sente une bonne r\u00e9sistance \u00e0 la corrosion sous contrainte de chlorure et une bonne r\u00e9sistance \u00e0 la corrosion par piq\u00fbres. En g\u00e9n\u00e9ral, la r\u00e9sistance \u00e0 la corrosion par piq\u00fbres et crevasses des aciers duplex d\u00e9passe 316L. En raison de l'excellente r\u00e9sistance \u00e0 la corrosion et de la r\u00e9sistance requise. Selon les statistiques, le montant de 2205 a \u00e9t\u00e9 multipli\u00e9 par au moins 15 au cours des dix derni\u00e8res ann\u00e9es.<\/p>\n

Les propri\u00e9t\u00e9s m\u00e9caniques compl\u00e8tes sont bonnes, avec une r\u00e9sistance et une r\u00e9sistance \u00e0 la fatigue \u00e9lev\u00e9es, et la limite d'\u00e9lasticit\u00e9 est le double de celle de l'acier inoxydable aust\u00e9nitique 18-8. Par cons\u00e9quent, l'\u00e9paisseur du mat\u00e9riau peut \u00eatre r\u00e9duite dans la conception.<\/p>","protected":false},"featured_media":5214,"template":"","categories":[186],"tags":[],"class_list":["post-5233","blog","type-blog","status-publish","has-post-thumbnail","hentry","category-stainless-steel-knowledge"],"yoast_head":"\nThe Advantages of Duplex 2205 Pipe - 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\/les-avantages-du-tube-duplex-2205\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"The Advantages of Duplex 2205 Pipe - Stainless Steel Pipe and Fittings | KAYSUNS\" \/>\n<meta property=\"og:description\" content=\"Introduction for\u00a0Duplex 2205 Steel Since the discovery of the two-phase organization, the duplex stainless steel which made\u00a0duplex stainless steel pipes (referred to as “duplex steel”) has been developed for three generations: The first generation DSS (duplex stainless steel) is represented by 3RE60 steel developed in Sweden in the mid-1960s; The second generation DSS is represented… Read More »The Advantages of Duplex 2205 Pipe\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.kaysuns.com\/fr\/blog\/les-avantages-du-tube-duplex-2205\/\" \/>\n<meta property=\"og:site_name\" content=\"Stainless Steel Pipe and Fittings | KAYSUNS\" \/>\n<meta property=\"article:modified_time\" content=\"2025-07-01T06:38:37+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.kaysuns.com\/wp-content\/uploads\/2019\/08\/duplex-2205-pipes.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"717\" \/>\n\t<meta property=\"og:image:height\" content=\"374\" \/>\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\/the-advantages-of-duplex-2205-pipe\/\",\"url\":\"https:\/\/www.kaysuns.com\/blog\/the-advantages-of-duplex-2205-pipe\/\",\"name\":\"The Advantages of Duplex 2205 Pipe - 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