Precipitation hardenable copper alloy and process

Details Precipitation hardenable copper alloy and process Precipitation hardenable copper alloy and process

C - Chemistry, Metallurgy

22

F

75/1, 149/6, 148

C22F 1/08 (2006.01) C22C 9/06 (2006.01)

Patent

CA 1205728

ABSTRACT OF THE DISCLOSURE An improved copper base alloy for use in electrical springs and a process of treating the alloy provide improved resistance to stress relaxation when the alloy is in a solution treated and aged condition having a discontinuous precipitate. The alloy consists essentially of from about 10% to about 15% nickel, from about 1% to about 3% aluminum, up to about 1% manganese, from about 0.05% to less than about 0.5% magnesium and the balance copper. The alloy is readily hot workable if held within a critical temperature range of from about 880°C to about 980°C prior to hot working.

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