Stainless steel product, use of the product and method of...

Details Stainless steel product, use of the product and method of... Stainless steel product, use of the product and method of...

C - Chemistry, Metallurgy

22

C

C22C 38/58 (2006.01)

Patent

CA 2722236

The invention relates to a stainless steel product, particularly to a duplex stainless steel casting with high machinability, to the use of the product and to the method to produce the product. The product contains in weight percent up to 0,07% carbon, up to 2% silicon, 3-8% manganese, 19-23% chromium, 0,5-1,7% nickel, up to 1% of molybdenum and/or tungsten with the formula (Mo+ 1/2W) less than 1%, up to 1% copper and 0,15-0,30% nitrogen, the remainder being iron and incidental impurities.

La présente invention concerne, d'une part un produit en acier inoxydable, et en particulier une fonte d'acier duplex inoxydable se prêtant particulièrement bien à l'usinage, d'autre part l'utilisation de ce produit, et enfin un procédé de production de ce produit. Ce produit est constitué, en poids, d'un maximum de 0,07% de carbone, d'un maximum de 2% de silicium, de 3% à 8% de manganèse, de 19% à 23% de chrome, de 0,5% à 1,7% de nickel, d'un maximum de 1% de molybdène et/ou de tungstène sous réserve que [Mo + ½W] soit inférieur à 1%, d'un maximum de 1% de cuivre et de 0,15% à 0,30% d'azote, le restant étant constitué du fer et d'impuretés résiduelles.

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