Hard gold alloy with zirconium, titanium and magnesium for jewelry manufacture
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United States of America Patent
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Apr 30, 2024
Grant Date -
Jul 9, 2020
app pub date -
Jun 28, 2017
filing date -
Mar 27, 2017
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Abstract
A high purity gold alloy alloyed with at least two of the metals zirconium, titanium and magnesium for jewelry manufacture, containing 75-99.5% Gold; at least two of 0.01-1.5% Zirconium, 0.01-1.5% Magnesium, and 0.01-1.5% Titanium; 0-24.98% Copper; 0-24.98% Zinc; and 0-24.98% Silver by weight. The gold alloy has 75-260 Vickers hardness and specific gravity 14-19 g/cc. A gold alloy with zirconium, magnesium, and titanium has a rich yellow colour. A gold alloy with zirconium and magnesium has a greenish yellow colour. A gold alloy with zirconium and titanium has a whitish yellow colour. A gold alloy with magnesium and titanium has a pale yellow colour. The gold alloy shows low wear during polishing. The gold alloy includes 18-24 Caratage, suitable for jewelry manufacture due to its low specific gravity.
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