{"id":1042,"date":"2026-04-22T03:37:42","date_gmt":"2026-04-22T07:37:42","guid":{"rendered":"https:\/\/www.songhaiflange.com\/?p=1042"},"modified":"2026-04-22T20:20:45","modified_gmt":"2026-04-23T00:20:45","slug":"duplex-stainless-steel-flanges-2205-vs-2507-super-duplex-applications","status":"publish","type":"post","link":"https:\/\/www.songhaiflange.com\/fr\/2026\/04\/22\/duplex-stainless-steel-flanges-2205-vs-2507-super-duplex-applications\/","title":{"rendered":"Brides en acier inoxydable duplex 2205 vs 2507 Applications Super Duplex"},"content":{"rendered":"<h2>Guide des brides en acier inoxydable duplex<\/h2>\n<p>Les aciers inoxydables duplex combinent les meilleures propri\u00e9t\u00e9s des aciers inoxydables aust\u00e9nitiques et ferritiques, offrant une solidit\u00e9 et une r\u00e9sistance \u00e0 la corrosion sup\u00e9rieures pour les applications exigeantes.<\/p>\n<h3>Qu'est-ce que l'acier inoxydable Duplex ?<\/h3>\n<p>L'acier inoxydable Duplex poss\u00e8de une microstructure biphas\u00e9e compos\u00e9e d'environ 50% d'aust\u00e9nite et 50% de ferrite. Cette structure unique fournit :<\/p>\n<ul>\n<li>R\u00e9sistance sup\u00e9rieure \u00e0 celle des aciers aust\u00e9nitiques 304\/316<\/li>\n<li>Excellente r\u00e9sistance \u00e0 la corrosion sous contrainte par le chlorure<\/li>\n<li>Bonne soudabilit\u00e9 et formabilit\u00e9<\/li>\n<li>Alternative rentable aux alliages \u00e0 forte teneur en nickel<\/li>\n<\/ul>\n<h3>2205 Duplex (UNS S32205\/S31803)<\/h3>\n<h4>Composition chimique<\/h4>\n<ul>\n<li>Chrome : 21-23%<\/li>\n<li>Nickel : 4,5-6,5%<\/li>\n<li>Molybd\u00e8ne : 2,5-3,5%<\/li>\n<li>Azote : 0,08-0,20%<\/li>\n<\/ul>\n<h4>Propri\u00e9t\u00e9s principales<\/h4>\n<ul>\n<li>Limite d'\u00e9lasticit\u00e9 : 450 MPa (2x plus \u00e9lev\u00e9e que le 316)<\/li>\n<li>R\u00e9sistance \u00e9quivalente \u00e0 la piq\u00fbre (PREN) : 32-38<\/li>\n<li>Excellente r\u00e9sistance \u00e0 la corrosion sous contrainte par le chlorure<\/li>\n<li>Bonne r\u00e9sistance \u00e0 la fatigue et \u00e0 l'usure<\/li>\n<\/ul>\n<h4>Applications typiques<\/h4>\n<ul>\n<li>\u00c9quipement de production de p\u00e9trole et de gaz<\/li>\n<li>Navires-citernes pour produits chimiques et navires de traitement<\/li>\n<li>Installations de dessalement<\/li>\n<li>Industrie du papier et de la p\u00e2te \u00e0 papier<\/li>\n<li>Syst\u00e8mes de d\u00e9sulfuration des gaz de combustion<\/li>\n<\/ul>\n<h3>2507 Super Duplex (UNS S32750)<\/h3>\n<h4>Composition chimique<\/h4>\n<ul>\n<li>Chrome : 24-26%<\/li>\n<li>Nickel : 6-8%<\/li>\n<li>Molybd\u00e8ne : 3-5%<\/li>\n<li>Azote : 0,24-0,32%<\/li>\n<\/ul>\n<h4>Propri\u00e9t\u00e9s principales<\/h4>\n<ul>\n<li>Limite d'\u00e9lasticit\u00e9 : 550 MPa<\/li>\n<li>R\u00e9sistance \u00e9quivalente \u00e0 la piq\u00fbre (PREN) : 40-45<\/li>\n<li>R\u00e9sistance sup\u00e9rieure \u00e0 la corrosion par piq\u00fbres de chlorure et \u00e0 la corrosion par crevasses<\/li>\n<li>Excellentes propri\u00e9t\u00e9s m\u00e9caniques \u00e0 des temp\u00e9ratures \u00e9lev\u00e9es<\/li>\n<\/ul>\n<h4>Applications typiques<\/h4>\n<ul>\n<li>Plates-formes p\u00e9troli\u00e8res et gazi\u00e8res offshore<\/li>\n<li>Syst\u00e8mes de refroidissement \u00e0 l'eau de mer<\/li>\n<li>Traitement chimique avec des milieux agressifs<\/li>\n<li>\u00c9quipements marins et construction navale<\/li>\n<li>\u00c9changeurs de chaleur en milieu corrosif<\/li>\n<\/ul>\n<h3>Tableau de comparaison<\/h3>\n<table>\n<tr>\n<th>Propri\u00e9t\u00e9<\/th>\n<th>316L<\/th>\n<th>2205<\/th>\n<th>2507<\/th>\n<\/tr>\n<tr>\n<td>Limite d'\u00e9lasticit\u00e9 (MPa)<\/td>\n<td>205<\/td>\n<td>450<\/td>\n<td>550<\/td>\n<\/tr>\n<tr>\n<td>R\u00e9sistance \u00e0 la traction (MPa)<\/td>\n<td>515<\/td>\n<td>650<\/td>\n<td>800<\/td>\n<\/tr>\n<tr>\n<td>Num\u00e9ro PREN<\/td>\n<td>24-26<\/td>\n<td>32-38<\/td>\n<td>40-45<\/td>\n<\/tr>\n<tr>\n<td>Indice des co\u00fbts<\/td>\n<td>1.0<\/td>\n<td>1.3-1.5<\/td>\n<td>1.8-2.2<\/td>\n<\/tr>\n<\/table>\n<h3>Avantages par rapport aux aciers aust\u00e9nitiques<\/h3>\n<ol>\n<li><strong>Plus grande r\u00e9sistance :<\/strong> Permet des sections plus fines et une r\u00e9duction du poids<\/li>\n<li><strong>Meilleure r\u00e9sistance \u00e0 la corrosion :<\/strong> Particuli\u00e8rement dans les environnements chlor\u00e9s<\/li>\n<li><strong>Fissuration par corrosion sous contrainte :<\/strong> R\u00e9sistance sup\u00e9rieure \u00e0 la CSC<\/li>\n<li><strong>Rentable :<\/strong> Co\u00fbt du cycle de vie inf\u00e9rieur malgr\u00e9 un prix initial plus \u00e9lev\u00e9<\/li>\n<\/ol>\n<h3>Consid\u00e9rations relatives \u00e0 la fabrication<\/h3>\n<ul>\n<li>N\u00e9cessite un apport de chaleur contr\u00f4l\u00e9 pendant le soudage<\/li>\n<li>Un traitement thermique apr\u00e8s soudage peut \u00eatre n\u00e9cessaire<\/li>\n<li>\u00c9viter la contamination avec des outils en acier au carbone<\/li>\n<li>Utiliser des mat\u00e9riaux de remplissage compatibles avec le duplex<\/li>\n<\/ul>\n<h3>Normes et sp\u00e9cifications<\/h3>\n<ul>\n<li>ASTM A182 : F51 (2205), F53 (2507)<\/li>\n<li>ASTM A479 : Barres et billettes<\/li>\n<li>NACE MR0175 : Homologation des services acides<\/li>\n<li>ASME B16.5 : Normes dimensionnelles<\/li>\n<\/ul>\n<p>Les brides en acier inoxydable Duplex offrent un \u00e9quilibre optimal entre performance et co\u00fbt pour les environnements corrosifs difficiles o\u00f9 le 316 est inad\u00e9quat mais o\u00f9 les alliages \u00e0 haute teneur en nickel sont trop chers.<\/p>\n<p><strong>WhatsApp :<\/strong>\u00a0+86-18658777855<br \/>\n<strong>Courriel :<\/strong>\u00a01007788887@qq.com<br \/>\n<a href=\"https:\/\/www.720yun.com\/vr\/a6ajt7ynrw0\" target=\"_blank\" rel=\"noopener\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-884\" src=\"http:\/\/www.songhaiflange.com\/wp-content\/uploads\/2026\/04\/4.webp\" alt=\"\" width=\"1290\" height=\"2317\" title=\"\" srcset=\"https:\/\/www.songhaiflange.com\/wp-content\/uploads\/2026\/04\/4.webp 1290w, https:\/\/www.songhaiflange.com\/wp-content\/uploads\/2026\/04\/4-167x300.webp 167w, https:\/\/www.songhaiflange.com\/wp-content\/uploads\/2026\/04\/4-570x1024.webp 570w, https:\/\/www.songhaiflange.com\/wp-content\/uploads\/2026\/04\/4-768x1379.webp 768w, https:\/\/www.songhaiflange.com\/wp-content\/uploads\/2026\/04\/4-855x1536.webp 855w, https:\/\/www.songhaiflange.com\/wp-content\/uploads\/2026\/04\/4-1140x2048.webp 1140w, https:\/\/www.songhaiflange.com\/wp-content\/uploads\/2026\/04\/4-7x12.webp 7w, https:\/\/www.songhaiflange.com\/wp-content\/uploads\/2026\/04\/4-416x747.webp 416w\" sizes=\"auto, (max-width: 1290px) 100vw, 1290px\" \/><\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>Duplex Stainless Steel Flanges Guide Duplex stainless steels combine the best properties of austenitic and ferritic stainless steels, offering superior strength and corrosion resistance for demanding applications. What is Duplex Stainless Steel Duplex stainless steel has a two-phase microstructure consisting of approximately 50% austenite and 50% ferrite. This unique structure provides: Higher strength than 304\/316 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[66,80,78,70],"class_list":["post-1042","post","type-post","status-publish","format-standard","hentry","category-blog","tag-flange","tag-forged","tag-stainless","tag-standard"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.songhaiflange.com\/fr\/wp-json\/wp\/v2\/posts\/1042","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.songhaiflange.com\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.songhaiflange.com\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.songhaiflange.com\/fr\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.songhaiflange.com\/fr\/wp-json\/wp\/v2\/comments?post=1042"}],"version-history":[{"count":2,"href":"https:\/\/www.songhaiflange.com\/fr\/wp-json\/wp\/v2\/posts\/1042\/revisions"}],"predecessor-version":[{"id":1053,"href":"https:\/\/www.songhaiflange.com\/fr\/wp-json\/wp\/v2\/posts\/1042\/revisions\/1053"}],"wp:attachment":[{"href":"https:\/\/www.songhaiflange.com\/fr\/wp-json\/wp\/v2\/media?parent=1042"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.songhaiflange.com\/fr\/wp-json\/wp\/v2\/categories?post=1042"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.songhaiflange.com\/fr\/wp-json\/wp\/v2\/tags?post=1042"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}