Electroconductive spring material

Details Electroconductive spring material Electroconductive spring material

1985-09-16

1987-09-08

Andrews, Melvyn J.

Metal treatment

Compositions

Heat treating

148414, C22C 906, C22F 108

Patent

active

046921923

ABSTRACT:
A low cost electroconductive spring material excellent in electroconductivity and spring performance, has from 1.8 to 3.0% by weight of Ni, from 0.15 to 0.35% by weight of Be, from 0.2 to 1.2% by weight of Si and the balance being copper. This low cost electroconductive spring material can be used in electric devices. As preferred embodiments, the electroconductive spring material may further contain from 0.05 to 3.0% by weight in a total amount of at least one component selected from Sn, Al and Zn provided that each of Sn, Al and Zn does not exceed 1.5% by weight, or from 0.01 to 1.5% by weight in a total amount of at least one component selected from Co, Fe, Zr, Ti and Mg, provided that each of Co, Fe, Zr, Ti and Mg does not exceed 1.0% by weight. Moreover, the electroconductive spring material is subjected to a final solidification heat treatment at a temperature of 880.degree.-950.degree. C., a cold processing of not greater than 80%, and an aging treatment at a temperature of 380.degree.-530.degree. C. for not more than 2 hours.

REFERENCES:
patent: 1893984 (1933-01-01), Corson
patent: 2136212 (1938-11-01), Heusel et al.

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