High strength, tarnish resistant composition of matter
A high strength, tarnish resistant composition of matter includes approximately 90 percent Ag, 3 to 5 percent Pt and 7 to 5 percent Cu. In a preferred embodiment, the composition of matter includes 90 percent Ag, 3 percent Pt and 7 percent Cu. In another preferred embodiment, the composition of matter includes 90 percent Ag, 5 percent Pt and 5 percent Cu.
1. A high strength tarnish resistant composition of matter comprising:
(a) about 90 percent silver of the composition weight;
(b) about 3 to 5 percent platinum of the composition weight; and
(c) about 7 to 5 percent copper of the composition weight.
2. The composition of matter of claim 1 wherein element (b) is about 3 percent and element (c) is about 7 percent.
3. The composition of matter of claim 1 wherein element (b) is about 4 percent and element (c) is about 6 percent.
4. The composition of matter of claim 1 wherein element (b) is about 5 percent and element (c) is about 5 percent.
5. The composition of matter of claim 1 wherein the rolled hardness is about 164 DPH (Rs 85).
6. The composition of matter of claim 1 wherein the annealed hardness is about 95 DPH (Rs 52).
7. A high strength tarnish resistant composition of matter comprising:
(a) silver in the amount of about 90 percent of the composition weight;
(b) platinum in the amount of about 3 percent of the composition weight;
(c) copper in the amount of about 7 percent of the composition weight; and
(d) wherein the rolled hardness is about 164 DPH (Rs 85).
8. The composition of matter of claim 7 wherein the annealed hardness is about 95 DPH (Rs 52).
9. A high strength tarnish resistant composition of matter comprising:
(a) silver in the amount of about 90 percent of the composition weight;
(b) platinum in the amount of about 4 percent of the composition weight;
(c) copper in the amount of about 6 percent of the composition weight; and
(d) wherein the rolled hardness is about 164 DPH (Rs 85).
10. The composition of matter of claim 9 wherein the annealed hardness is about 95 DPH (Rs 52).
11. A high strength tarnish resistant composition of matter comprising:
(a) silver in the amount of about 90 percent of the composition weight;
(b) platinum in the amount of about 5 percent of the composition weight;
(c) copper in the amount of about 5 percent of the composition weight; and
(d) wherein the rolled hardness is about 164 DPH (Rs 85).
12. The composition of matter of claim 11 wherein the annealed hardness is about 95 DPH (Rs 52).