Silver colored alloy with low percentage of nickel and copper

Details Silver colored alloy with low percentage of nickel and copper Silver colored alloy with low percentage of nickel and copper

1996-11-19

1998-10-06

Ryan, Patrick

Metal treatment

Stock

Noble metal base

420500, 420502, 420503, 420504, 148405, C22C 500

Patent

active

058171959

ABSTRACT:
A silver colored alloy highly tarnish resistant, sterling silver is provided or having included therein: 90% to 92.5% by weight Silver; 5.75% to 7.5% by weight Zinc; 0.25% to less than 1% by weight Copper; 0.25% to 0.5% by weight Nickel; 0.1% to 0.25% by weight Silicon; and 0.0% to 0.5% by weight Indium.

REFERENCES:
patent: 4944985 (1990-07-01), Alexander et al.
patent: 4973446 (1990-11-01), Bernard et al.

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