Tarnish-resistant copper alloy and method of preparation

Details Tarnish-resistant copper alloy and method of preparation Tarnish-resistant copper alloy and method of preparation

1983-10-05

1985-01-15

Skiff, Peter K.

Metal treatment

Compositions

Heat treating

148 115C, 420486, 420489, C22C 901, C22F 108

Patent

active

044937369

ABSTRACT:
An alloy of copper, aluminum, nickel and indium is found useful in the fabrication of jewelry and dental appliances. The alloy resists tarnishing and has a gold-like appearance.

REFERENCES:
patent: 3958322 (1976-05-01), Rhodes
patent: 3998633 (1976-12-01), Rhodes

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