{"id":6507,"date":"2020-11-23T06:05:34","date_gmt":"2020-11-23T06:05:34","guid":{"rendered":"https:\/\/www.kaysuns.com\/?p=6507"},"modified":"2025-12-15T07:07:08","modified_gmt":"2025-12-15T07:07:08","slug":"resistance-a-la-corrosion-alcaline-et-acide-du-tube-en-acier-inoxydable-2205","status":"publish","type":"blog","link":"https:\/\/www.kaysuns.com\/fr\/blog\/resistance-a-la-corrosion-alcaline-et-acide-du-tube-en-acier-inoxydable-2205\/","title":{"rendered":"R\u00e9sistance \u00e0 la corrosion alcaline et acide du tuyau en acier inoxydable 2205"},"content":{"rendered":"

Afin d'illustrer l'Acide r\u00e9sistance \u00e0 la corrosion<\/a> de l'acier inoxydable 2205 dans des solutions acides fortes, la figure 1 montre les donn\u00e9es de corrosion dans une solution d'acide sulfurique.<\/p>\n\n\n

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Figure 1<\/figcaption><\/figure>\n<\/div>\n\n\n

Les conditions moyennes vont d'un environnement faiblement r\u00e9ducteur avec une faible concentration en acide \u00e0 un environnement oxydant \u00e0 forte concentration et une solution chaude fortement r\u00e9ductrice \u00e0 concentration moyenne.<\/p>\n\n\n\n

Les aciers inoxydables duplex 2205 et 2507 sont sup\u00e9rieurs \u00e0 de nombreux aciers inoxydables aust\u00e9nitiques \u00e0 haute teneur en nickel dans des solutions avec une concentration en acide allant jusqu'\u00e0 environ 15%. Les aciers duplex sont sup\u00e9rieurs aux aciers inoxydables 316 ou 317 dans la plage de concentration en acide d'au moins 40%.<\/p>\n\n\n\n

Les tubes duplex en acier inoxydable sont \u00e9galement utiles dans cet acide oxydant contenant des chlorures. La teneur en nickel du tuyau en acier inoxydable duplex n'est pas suffisante pour r\u00e9sister \u00e0 la forte corrosion r\u00e9ductrice de la solution d'acide sulfurique \u00e0 concentration moyenne ou d'acide chlorhydrique. A l'interface humide\/sec dans un environnement r\u00e9ducteur concentr\u00e9 en acide, la corrosion, en particulier la corrosion ferritique, d\u00e9marre et progresse rapidement. La r\u00e9sistance \u00e0 la corrosion par oxydation de l'acier inoxydable duplex en fait un excellent mat\u00e9riau candidat pour les dispositifs \u00e0 acide nitrique ou \u00e0 acide organique fort.<\/p>\n\n\n\n

La figure 2 montre la corrosion de tuyaux en acier inoxydable duplex et de tuyaux en acier inoxydable aust\u00e9nitique dans un m\u00e9lange d'acide ac\u00e9tique 50% et diff\u00e9rentes teneurs en acide formique \u00e0 temp\u00e9rature d'\u00e9bullition. Bien que les tuyaux en acier inoxydable 304 et 316 puissent \u00eatre utilis\u00e9s pour les milieux acides organiques forts \u00e0 temp\u00e9rature ambiante et \u00e0 temp\u00e9rature moyenne, les aciers inoxydables 2205 et autres aciers inoxydables duplex sont dominants dans de nombreux proc\u00e9d\u00e9s impliquant des milieux acides organiques \u00e0 haute temp\u00e9rature, et en raison de leur r\u00e9sistance \u00e0 la corrosion par piq\u00fbres et sous tension. , Il peut \u00e9galement \u00eatre utilis\u00e9 dans les milieux de traitement des hydrocarbures halog\u00e9n\u00e9s.<\/p>\n\n\n

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Figure 2, Corrosion de l'acier inoxydable duplex et de l'acier inoxydable aust\u00e9nitique dans une solution mixte bouillante d'acide ac\u00e9tique 50% et de diff\u00e9rents types d'acide formique (source, Sandvik)<\/figcaption><\/figure>\n<\/div>\n\n\n

Post\u00e9 par tuyaux et raccords en acier inoxydable<\/a> fournisseur, KAYSUNS.<\/p>","protected":false},"featured_media":6508,"template":"","categories":[186],"tags":[],"class_list":["post-6507","blog","type-blog","status-publish","has-post-thumbnail","hentry","category-stainless-steel-knowledge"],"yoast_head":"\nAlkaline & Acid Corrosion Resistance Of 2205 Stainless Steel Pipe<\/title>\n<meta name=\"description\" content=\"In order to illustrate the Acid corrosion resistance of 2205 stainless steel pipe in acid solutions, Figure 1 shows the corrosion data...\" \/>\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\/resistance-a-la-corrosion-alcaline-et-acide-du-tube-en-acier-inoxydable-2205\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Alkaline & 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