Gold alloy for manufacture of jewelry contains 75 to 91 per cent weight of the elements gold, silver, zinc and copper
摘要
<p>A gold alloy contains 75 to 91% Wt. Of the elements gold, silver, zinc and copper. The alloy contains e.g. 75-91 % Wt. Ag, Zn and Cu, plus 0-14% Ni, 0-0.2% Si, and the remainder 100% Au.</p>
