| abstract |
The platinum-nickel based ternary or more element alloy includes about 65-80 wt.% platinum, about 18-27 wt.% nickel, and about 2-8 wt.% a third or more additive, so The additive may include one or more of Ir, Pd, Rh, Ru, Nb, Mo, Re, W and/or Ta. These alloys can be age hardened to provide hardness greater than 580 knoop, ultimate tensile strength in excess of 320 ksi, and elongation at break of at least 1.5%. The alloy can be used for stationary and movable electrical contacts as well as probe applications. The alloy can also be used in medical devices. |