corrosion intergranulaire<\/a> et la soudabilit\u00e9. En m\u00eame temps, il conserve certaines caract\u00e9ristiques de l'acier inoxydable ferritique, telles que la fragilit\u00e9 \u00e0 475 \u00b0C et la r\u00e9sistance \u00e0 la chaleur. Conductivit\u00e9 \u00e9lev\u00e9e, faible coefficient de dilatation lin\u00e9aire, superplasticit\u00e9 et propri\u00e9t\u00e9s magn\u00e9tiques.<\/p>\nPar rapport \u00e0 l'acier inoxydable aust\u00e9nitique, la r\u00e9sistance de l'acier inoxydable duplex est plus \u00e9lev\u00e9e, en particulier la limite d'\u00e9lasticit\u00e9 est consid\u00e9rablement am\u00e9lior\u00e9e, et les propri\u00e9t\u00e9s telles que la r\u00e9sistance \u00e0 la corrosion par piq\u00fbres, la r\u00e9sistance \u00e0 la corrosion sous contrainte et la r\u00e9sistance \u00e0 la fatigue par corrosion sont \u00e9galement consid\u00e9rablement am\u00e9lior\u00e9es.<\/p>\n
Depuis la naissance de l'acier biphas\u00e9 aux \u00c9tats-Unis dans les ann\u00e9es 1940, il est pass\u00e9 \u00e0 la troisi\u00e8me g\u00e9n\u00e9ration. Sa principale caract\u00e9ristique est que la limite d'\u00e9lasticit\u00e9 peut atteindre 400 \u00e0 550 MPa, soit le double de celle de l'acier inoxydable ordinaire, ce qui permet d'\u00e9conomiser des mat\u00e9riaux et de r\u00e9duire les co\u00fbts de fabrication des \u00e9quipements.<\/p>\n
En termes de r\u00e9sistance \u00e0 la corrosion, en particulier dans l'environnement moyen (tel que l'eau de mer, teneur \u00e9lev\u00e9e en ions chlorure), la r\u00e9sistance aux piq\u00fbres, \u00e0 la corrosion caverneuse, \u00e0 la corrosion sous contrainte et \u00e0 la fatigue par corrosion de l'acier inoxydable duplex est meilleure que l'acier inoxydable aust\u00e9nite ordinaire.<\/p>\n
Les tuyau duplex 2205<\/a> de fournisseur de raccords en acier inoxydable<\/a> kaysuns a les caract\u00e9ristiques de l'acier inoxydable aust\u00e9nitique et ferritique. Par rapport \u00e0 la ferrite, il a une plasticit\u00e9, une t\u00e9nacit\u00e9 plus \u00e9lev\u00e9e, aucune fragilit\u00e9 \u00e0 temp\u00e9rature ambiante, une r\u00e9sistance \u00e0 la corrosion intergranulaire et \u00e0 la soudabilit\u00e9, et maintient \u00e9galement une fragilit\u00e9 de 475\u00b0C et une conductivit\u00e9 thermique \u00e9lev\u00e9e de l'acier inoxydable ferritique, avec une super plasticit\u00e9. Compar\u00e9 \u00e0 l'acier inoxydable aust\u00e9nitique, il pr\u00e9sente une r\u00e9sistance et une r\u00e9sistance \u00e9lev\u00e9es \u00e0 la corrosion intergranulaire et \u00e0 la corrosion sous contrainte de chlorure.<\/p>\nL'acier inoxydable duplex a une excellente r\u00e9sistance aux piq\u00fbres. Il s'agit \u00e9galement d'un acier inoxydable duplex nickel-nickel avec une structure \u00e0 double phase aust\u00e9nitique + ferrite, et le contenu des deux phases est fondamentalement le m\u00eame, il a donc de l'acier inoxydable aust\u00e9nitique. Et les caract\u00e9ristiques de l'acier inoxydable ferritique.<\/p>","protected":false},"featured_media":5271,"template":"","categories":[186],"tags":[],"class_list":["post-5270","blog","type-blog","status-publish","has-post-thumbnail","hentry","category-stainless-steel-knowledge"],"yoast_head":"\n
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![\"tuyau](\"https:\/\/www.kaysuns.com\/wp-content\/uploads\/2019\/09\/IMG_20170504_090722.jpg\")
<\/a><\/p>\n