Tarnish resistant gold colored alloy with enhanced gold color

Details Tarnish resistant gold colored alloy with enhanced gold color Tarnish resistant gold colored alloy with enhanced gold color

1989-02-01

1990-08-14

Morris, Theodore

Alloys or metallic compositions

Silver base

Copper containing

420502, 420587, C22C 3002, C22C 508

Patent

active

049485571

ABSTRACT:
A gold colored, tarnish and corrosion resistant alloy is disclosed, usable for jewelry, dental purposes and the like. The alloy consists essentially of 24 to 27 percent palladium, 19 to 22 percent indium, 5 to 30 percent copper, 1 to 20 percent gold, and the balance is essentially silver.

REFERENCES:
patent: 4350527 (1982-09-01), Davitz
patent: 4369162 (1983-01-01), Wagner et al.
patent: 4804517 (1989-02-01), Schaffer et al.

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