Copper-nickel-tin alloys for lead conductor materials for integr

Details Copper-nickel-tin alloys for lead conductor materials for integr Copper-nickel-tin alloys for lead conductor materials for integr

1980-12-29

1982-06-29

Skiff, Peter K.

Alloys or metallic compositions

Copper base

Tin containing

148 2, 148 115C, 148 127C, 420 59, 420473, C22C 902, C22C 906

Patent

active

043370896

ABSTRACT:
Copper-nickel-tin alloys having high tensile strength and conductivity suitable for lead conductor materials for integrated circuits are produced by melting a starting material containing 0.5-3.0% by weight of Ni, 0.3-0.9% by weight of Sn, 0.01-0.2% by weight of phosphorus and 0-0.35% by weight of at least one of Mn and Si other than Cu, casting the molten metal, rolling conventionally the cast into a sheet having a thickness corresponding to more than 60% of cold reduction rate of the final necessary gauge, annealing such a rolled sheet at a temperature of 300-395.degree. C. for 1 hour, cold rolling the annealed sheet and annealing the cold rolled sheet at a temperature of 150-250.degree. C. for 1 hour.

REFERENCES:
patent: 2155405 (1939-04-01), Crampton et al.
patent: 2375285 (1945-05-01), Crampton et al.

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