{"id":6723,"date":"2021-02-26T06:58:37","date_gmt":"2021-02-26T06:58:37","guid":{"rendered":"https:\/\/www.kaysuns.com\/?p=6723"},"modified":"2025-12-25T03:57:18","modified_gmt":"2025-12-25T03:57:18","slug":"acier-inoxydable-super-duplex-2507","status":"publish","type":"blog","link":"https:\/\/www.kaysuns.com\/fr\/blog\/acier-inoxydable-super-duplex-2507\/","title":{"rendered":"Acier inoxydable super duplex 2507"},"content":{"rendered":"<h2 class=\"wp-block-heading\"><strong>Description de l&#039;acier inoxydable Super Duplex 2507<\/strong><\/h2>\n\n\n\n<p>L'acier inoxydable super duplex 2507 contient 25% de chrome, 4% de chrome, 4% de chrome, 4% de chrome et 4% de chrome. <a href=\"https:\/\/www.kaysuns.com\/fr\/role-du-molybdene-dans-les-tubes-et-raccords-en-acier-inoxydable\/\" target=\"_blank\">molybd\u00e8ne<\/a> et le nickel 7%. Il pr\u00e9sente une intensit\u00e9 et une r\u00e9sistance \u00e0 la corrosion \u00e9lev\u00e9es, et est principalement utilis\u00e9 dans le traitement chimique, la p\u00e9trochimie et les \u00e9quipements sous-marins. En outre, cet acier inoxydable est \u00e9galement r\u00e9sistant \u00e0 la corrosion par le chlorure, pr\u00e9sente une conductivit\u00e9 thermique \u00e9lev\u00e9e et un faible coefficient de dilatation thermique. Gr\u00e2ce \u00e0 sa teneur \u00e9lev\u00e9e en chrome, en molybd\u00e8ne et en azote, il peut r\u00e9sister \u00e0 la corrosion ponctuelle, \u00e0 la corrosion fissurante et \u00e0 la corrosion g\u00e9n\u00e9rale.<\/p>\n\n\n\n<figure class=\"wp-block-gallery alignright has-nested-images columns-default is-cropped wp-block-gallery-1 is-layout-flex wp-block-gallery-is-layout-flex\">\n<figure class=\"wp-block-image size-large\"><img fetchpriority=\"high\" decoding=\"async\" width=\"646\" height=\"753\" data-id=\"6743\" src=\"https:\/\/www.kaysuns.com\/wp-content\/uploads\/2021\/03\/Super-Duplex-2507.png\" alt=\"super duplex 2507\" class=\"wp-image-6743\" srcset=\"https:\/\/www.kaysuns.com\/wp-content\/uploads\/2021\/03\/Super-Duplex-2507.png 646w, https:\/\/www.kaysuns.com\/wp-content\/uploads\/2021\/03\/Super-Duplex-2507-257x300.png 257w\" sizes=\"(max-width: 646px) 100vw, 646px\" \/><\/figure>\n<\/figure>\n\n\n\n<p><a href=\"https:\/\/www.kaysuns.com\/wp-content\/uploads\/2019\/07\/SUPER-DUPLEX-STEEL-2507.pdf\" target=\"_blank\" rel=\"noreferrer noopener\">Super Duplex 2507<\/a> a \u00e9galement une tr\u00e8s grande r\u00e9sistance aux chocs. Mais il ne peut pas \u00eatre utilis\u00e9 \u00e0 une temp\u00e9rature inf\u00e9rieure \u00e0 570 degr\u00e9s. S'il est soumis \u00e0 cet environnement pendant une longue p\u00e9riode, son intensit\u00e9 diminuera. Cet acier inoxydable pr\u00e9sente de nombreux avantages par rapport \u00e0 l'acier ferritique et \u00e0 l'acier aust\u00e9nitique. Gr\u00e2ce \u00e0 sa teneur \u00e9lev\u00e9e en chrome et en molybd\u00e8ne, il pr\u00e9sente une excellente r\u00e9sistance \u00e0 la corrosion, \u00e0 la corrosion caverneuse et \u00e0 la capacit\u00e9 de corrosion uniforme. La microstructure duplex garantit \u00e9galement la r\u00e9sistance \u00e0 la corrosion. <a href=\"https:\/\/www.kaysuns.com\/fr\/fissuration-par-corrosion-sous-contrainte-dans-lacier-inoxydable\/\" target=\"_blank\">fissuration par corrosion sous contrainte<\/a>et la r\u00e9sistance m\u00e9canique est \u00e9lev\u00e9e.<\/p>\n\n\n\n<p><strong>ASTM : UNS S32750<\/strong><\/p>\n\n\n\n<p><strong>DIN\u00a0:\u00a01.4410<\/strong><\/p>\n\n\n\n<p><strong>Go\u00a0: 00Cr25Ni7Mo4N<\/strong><\/p>\n\n\n\n<p><strong>Cat\u00e9gorie de forgeage : F53<\/strong><\/p>\n\n\n\n<p><strong>II. Composant chimique<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-table is-style-stripes\"><table class=\"has-background\" style=\"background-color:#e9fbe5\"><tbody><tr><td>C\u2264<\/td><td>Si\u2264<\/td><td>Mn\u2264<\/td><td>P\u2264<\/td><td>S\u2264<\/td><td>Cr\u2265<\/td><td>Ni\u2265<\/td><td>Mo\u2265<\/td><td>Non<\/td><\/tr><tr><td>0.03<\/td><td>0.80<\/td><td>2.00<\/td><td>0.030<\/td><td>0.020<\/td><td>24.0-26.0<\/td><td>6.0-8.0<\/td><td>3.0-5.0<\/td><td>0.24-0.32<\/td><\/tr><tr><td>Autre<\/td><td>PREN<\/td><td>Fe\u2264<\/td><td>Cu\u2264<\/td><td>Al\u2264<\/td><td>Ti\u2264<\/td><td>Nb\u2264<\/td><td>W\u2264<\/td><td>V\u2264<\/td><\/tr><tr><td><\/td><td>*<\/td><td><\/td><td>0.05<\/td><td><\/td><td><\/td><td>\u2013<\/td><td>\u2013<\/td><td>\u2013<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>*<a href=\"\/fr\/blog\/quest-ce-que-la-prenatalite\/\" target=\"_blank\" rel=\"noreferrer noopener\">PREN<\/a>: %Cr + 3.3x%Mo + 16x%N<\/p>\n\n\n\n<p><strong>III. Fonction physique et m\u00e9canique<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>(a) Densit\u00e9 de 2507\u00a0: 8,0 g\/cm3.<\/li>\n\n\n\n<li>(b) R\u00e9sistance \u00e0 la traction du duplex 2507\u00a0:\u00a0b\u2265 800\u00a0MPa.<\/li>\n\n\n\n<li>(c) Limite d&#039;\u00e9lasticit\u00e9 de 2507\u00a0: 0.2\u2265550Mpa<\/li>\n\n\n\n<li>(d) Allongement de 2507\u00a0: 15%.<\/li>\n\n\n\n<li>(e) Duret\u00e9 de 2507\u00a0:\u00a0310<\/li>\n<\/ul>\n\n\n\n<p><strong>IV. R\u00e9sistance \u00e0 la corrosion<\/strong><\/p>\n\n\n\n<p>(a) Compar\u00e9 \u00e0 la corrosion normale et au 904L, l&#039;acier inoxydable super duplex 2507 est plus puissant dans sa r\u00e9sistance \u00e0 la corrosion sur l&#039;acide sulfurique m\u00e9lang\u00e9 avec des ions chlorure. Pour 904L, il s&#039;agit d&#039;un alliage aust\u00e9nitique sp\u00e9cialement con\u00e7u pour r\u00e9sister \u00e0 la corrosion de l&#039;acide sulfurique pur. Cependant, l&#039;acier inoxydable super duplex 2507 a la capacit\u00e9 de r\u00e9sister \u00e0 la fois aux acides organiques tels que l&#039;acide formique et l&#039;acide ac\u00e9tique et les acides inorganiques, gr\u00e2ce \u00e0 une teneur \u00e9lev\u00e9e en chrome et en molybd\u00e8ne. Quant au 316L, il ne peut pas \u00eatre utilis\u00e9 en milieu acide chlorhydrique, o\u00f9 il peut \u00eatre soumis \u00e0 une corrosion locale ou globale. L&#039;acier inoxydable super duplex 2507 peut \u00eatre utilis\u00e9 dans un environnement d&#039;acide chlorhydrique dilu\u00e9 car il pr\u00e9sente une forte r\u00e9sistance aux dommages localis\u00e9s et \u00e0 la corrosion par fissure.<\/p>\n\n\n\n<p>(b) <a href=\"https:\/\/www.kaysuns.com\/fr\/corrosion-intergranulaire-danger-cache\/\" target=\"_blank\">Corrosion intergranulaire<\/a>: En raison de la faible teneur en carbone de l'acier inoxydable super duplex 2507, le risque de pr\u00e9cipitation intergranulaire de carbure pendant le traitement thermique est fortement r\u00e9duit. Par cons\u00e9quent, cet alliage pr\u00e9sente une forte r\u00e9sistance \u00e0 la corrosion intergranulaire li\u00e9e au carbure.<\/p>\n\n\n\n<p>(c) Fissuration caus\u00e9e par la corrosion sous contrainte\u00a0: en raison de sa teneur plus \u00e9lev\u00e9e en alliage, la r\u00e9sistance \u00e0 la corrosion et la r\u00e9sistance du 2507 sont meilleures que celles du 2205. La structure compos\u00e9e du 2507 se caract\u00e9rise par une forte r\u00e9sistance \u00e0 la fissuration par corrosion sous contrainte.<\/p>\n\n\n\n<p>(d) R\u00e9sistance \u00e0 la corrosion : Il existe de nombreuses fa\u00e7ons de tester la capacit\u00e9 de r\u00e9sistance \u00e0 la corrosion des produits en acier dans la solution contenant du chlorure. Et la temp\u00e9rature critique pour l&#039;acier inoxydable haute performance dans la solution de chlorure de sodium 1M est sp\u00e9cifi\u00e9e. Toutes sortes de r\u00e9sultats exp\u00e9rimentaux ont montr\u00e9 que 2507 a une excellente capacit\u00e9 de r\u00e9sistance \u00e0 la corrosion.<\/p>\n\n\n\n<p>(e) Corrosion fissur\u00e9e : Pour chaque construction, la fissuration est toujours in\u00e9vitable, ce qui rend ainsi l&#039;acier inoxydable dans l&#039;environnement chlor\u00e9 plus vuln\u00e9rable \u00e0 la corrosion. L&#039;acier inoxydable super duplex 2507 a une forte r\u00e9sistance \u00e0 la corrosion par fissure.<\/p>\n\n\n\n<p><strong>V. Candidatures\u00a0:<\/strong><\/p>\n\n\n\n<p>(a) \u00c9quipements de l&#039;industrie p\u00e9troli\u00e8re et gazi\u00e8re<\/p>\n\n\n\n<p>(b) Plate-forme offshore, \u00e9changeur de chaleur, \u00e9quipement sous-marin, \u00e9quipement de lutte contre l&#039;incendie<\/p>\n\n\n\n<p>c) Industrie de transformation chimique, industrie des ustensiles et de la tuyauterie<\/p>\n\n\n\n<p>(d) Usines de dessalement, usines d&#039;osmose inverse haute pression et pipelines sous-marins<\/p>\n\n\n\n<p>(e) Pi\u00e8ces m\u00e9caniques (pi\u00e8ces \u00e0 haute r\u00e9sistance et r\u00e9sistance \u00e0 la corrosion)<\/p>\n\n\n\n<p>(f) Syst\u00e8me FGD dans l&#039;industrie \u00e9nerg\u00e9tique, syst\u00e8me de nettoyage industriel, tour d&#039;absorption<\/p>\n\n\n\n<p>Vous voudrez peut-\u00eatre aussi lire :<br \/><a href=\"https:\/\/www.kaysuns.com\/fr\/problemes-courants-lies-a-lutilisation-du-super-duplex\/\" target=\"_blank\">Probl\u00e8mes courants li\u00e9s \u00e0 l'utilisation du Super Duplex<\/a><\/p>\n\n\n\n<p><strong>VI. Des produits<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/www.kaysuns.com\/fr\/duplex-2205-stainless-steel-pipe\/\" target=\"_blank\">2507 Tuyau Super Duplex<\/a> ; <\/li>\n\n\n\n<li><a href=\"https:\/\/www.kaysuns.com\/fr\/bride-en-acier-inoxydable\/\" target=\"_blank\">Brides en acier inoxydable<\/a>; <\/li>\n\n\n\n<li><a href=\"https:\/\/www.kaysuns.com\/fr\/tube-soude-en-acier-inoxydable\/\" target=\"_blank\">Tubes soud\u00e9s en acier inoxydable<\/a>;<\/li>\n\n\n\n<li><a href=\"https:\/\/www.kaysuns.com\/fr\/raccords-de-tuyauterie-en-acier-inoxydable\/\" target=\"_blank\">Raccords de tuyauterie duplex<\/a><\/li>\n<\/ul>\n\n\n\n<p><\/p>","protected":false},"featured_media":5188,"template":"","categories":[186],"tags":[200,199],"class_list":["post-6723","blog","type-blog","status-publish","has-post-thumbnail","hentry","category-stainless-steel-knowledge","tag-duplex-pipe","tag-super-duplex-2507"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.6 - 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