Processing of copper alloys

C - Chemistry – Metallurgy – 22 – F

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148/35

C22F 1/08 (2006.01) B23K 35/40 (2006.01)

Patent

CA 1241897

ABSTRACT OF THE INVENTION This invention is directed to the treatment of copper beryllium alloys, and to articles and parts made therefrom, containing special small amounts of beryllium and nickel, e.g., about 0.05% to about 0.5% beryllium and about 0.05% to about 1% nickel where cobalt may be substituted for up to about one-half of said nickel content at a substitution ratio of about 1 part by weight cobalt for about 2 parts by weight nickel, which imparts to these alloys a superior combination of stress relaxation resistance, formability, ductility, conductivity and strength by the process of solution annealing, cold working at least about 50% or at least about 70% or 90% or more and age hardening.

485087

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