Nickel/iron casting alloy exhibiting high strength at...

Details Nickel/iron casting alloy exhibiting high strength at... Nickel/iron casting alloy exhibiting high strength at...

C - Chemistry, Metallurgy

22

C

75/116

C22C 30/00 (2006.01) C22C 19/05 (2006.01)

Patent

CA 1208043

Abstract of the Disclosure The invention relates to a substantially cobalt free nickel/iron casting alloy which exhibits high strength at elevated temperatures accompanied by insensitivity to thermal fatigue, and possesses microstructural constituents which are thermodynamically highly stable. The alloy exhibits high hardness at elevated temperatures, outstanding resistance to oxidation, corrosion and wear, as well as good welding properties. The alloy is particularly suitable as a material for nuclear reactor components, and is composed of 1.1 to 1.6 % of carbon 0.5 to 1.5 % of silicon 0.01 to 0.2 % of maganese 22 to 26 % of chromium 12.5 to 14.5 % of molybdenum 0.2 to 0.8 % of niobium (columbium) to 40 % of nickel less than 0.1 % of cobalt less than 0.01 % of boron less than 0.002% of tantalum and 18 to 26 % of iron,to make up 100%.

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