A platinum-free silver alloy may include about 0.1% to 0.9% Au, about 83% to 90% Ag, about 2% to 3% Pd, about 3% to 5% Zn, about 2% to 8% Cu, about 0.01% to 0.4% B, about 0.1% to 0.3% Ge, and about 0.01% to 0.03% Ir.
1. A platinum-free silver alloy consisting of:
about 0.1% to 0.9% Au by weight;
about 83% to 90% Ag by weight;
about 2% to 3% Pd by weight;
about 3% to 5% Zn by weight;
about 2% to 8% Cu by weight;
about 0.01% to 0.4% B by weight; and
a grain modifier consisting of one of Ge, Ga, and In and one of Ir, Os, and Re.
2. The alloy of claim 1 , wherein the grain modifier is about 0.1% to 0.3% Ge, by weight, and about 0.01% to 0.03% Ir by weight.
3. The alloy of claim 1 , consisting of about 0.5% Au by weight.
4. The alloy of claim 1 , consisting of about 85% Ag by weight.
5. The alloy of claim 1 , consisting of about 88% Ag by weight.
6. The alloy of claim 1 , consisting of about 2.5% Pd by weight.
7. The alloy of claim 1 , consisting of about 4% Zn by weight.
8. The alloy of claim 1 , consisting of about 4.3% Cu by weight.
9. The alloy of claim 1 , consisting of about 7% Cu by weight.
10. The alloy of claim 1 , consisting of about 0.04% B by weight.
11. The alloy of claim 1 , consisting of about 0.25% B by weight.
12. The alloy of claim 1 , consisting of about 0.2% Ge by weight.
13. The alloy of claim 1 , consisting of about 0.02 Ir by weight.