Copper-nickel-silicon-chromium alloy

Details Copper-nickel-silicon-chromium alloy Copper-nickel-silicon-chromium alloy

1989-12-26

1991-07-02

Dean, Richard O.

Alloys or metallic compositions

Copper base

Nickel containing

148160, 148412, 148413, 148414, C22C 906, C22C 902, C22C 904

Patent

active

050283910

ABSTRACT:
A copper-nickel-silicon-chromium alloy having the combination of high hardness and high electrical conductivity. The alloy is composed by weight of 9.5% to 11.5% nickel, in an amount sufficient to provide a nickel-silicon ratio of 3.4 to 4.5, 0.5% to 2.0% chromium, and the balance copper. The alloy is heat treated by initially heating the alloy to a solution temperature and is thereafter quenched. The quenched alloy is then aged to precipitate the metal silicides. Because of the specific ratio of nickel to silicon, the heat treated alloy develops during heat treatment a hardness in excess of 30 Rockwell C and an electrical conductivity in excess of 24% of pure copper.

REFERENCES:
patent: 1658186 (1928-02-01), Corson
patent: 1763303 (1930-06-01), Graham
patent: 1778668 (1930-10-01), Fuller
patent: 3072508 (1963-01-01), Klement et al.
patent: 4191601 (1980-03-01), Edens et al.
patent: 4260435 (1981-04-01), Edens et al.
patent: 4728372 (1988-03-01), Caron et al.

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