Patent ID: 11970762
Assignee: nan
Field: Materials, metallurgy (Chemistry)
Classification: CPC C | IPC C

Claim 0:
1. A gold alloy composition for jewellery manufacture, wherein the gold alloy composition is alloyed with zirconium, titanium, and magnesium, the gold alloy composition consisting of:
75 to 99.5% by weight of gold,
0.01 to 1.5% by weight of zirconium,
0.01 to 1.5% by weight of magnesium,
0.01 to 1.5% by weight of titanium,
0 to 24.98% by weight of copper,
0 to 6.225% by weight of zinc,
0 to 6.225% by weight of silver; and
wherein:
zinc and silver are present in equal amounts by weight in the gold alloy composition;
the gold alloy composition has lower specific gravity, higher springiness, and higher wear resistance than a ternary gold alloy consisting of gold, copper, and silver; and
the gold alloy composition and the ternary gold alloy contain an identical gold content.