Corrosion-resistant ni-cr-si-cu alloys

Details Corrosion-resistant ni-cr-si-cu alloys Corrosion-resistant ni-cr-si-cu alloys

C - Chemistry, Metallurgy

22

C

75/16

C22C 19/05 (2006.01) B23K 35/30 (2006.01) C22C 1/04 (2006.01)

Patent

CA 2024851

Disclosed is a nickel-base alloy for use under "super oxidizing" environments, for example, concentrated sulfuric acid, fuming nitric acid, chromium acid and mixtures containing chromic acid. The alloy has good strength and may be precipitation hardened. Its thermal stability and weldability are excellent. The alloy has a high degree of resistance to pitting. A nominal composition contains, in percent by weight, about 20 chromium, about 2 copper, about 2 iron, about 2 molybdenum, about 5 silicon and the balance nickel plus normal impurities.

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