Platinum-nickel-based ternary or higher alloys include platinum at about 65‒80 wt.%, nickel at about 18‒27 wt.%, and about 2‒8 wt.% of ternary or higher additions that may include one or more of Ir, Pd, Rh, Ru, Nb, Mo, Re, W, and/or Ta. These alloys are age-hardenable, provide hardness greater than 580 Knoop, ultimate tensile strength in excess of 320 ksi, and elongation to failure of at least 1.5%. The alloys may be used in static and moveable electrical contact and probe applications. The alloys may also be used in medical devices.鉑-鎳基三元或更多元合金包括約65-80 wt.%的鉑，約18-27 wt.%的鎳和約2-8wt.%的第三元或更多元的添加，該等可能包括Ir、Pd、Rh、Ru、Nb、Mo、Re、W和/或Ta中之一或多者。這些合金為可時效硬化(age-hardenable)的，提供大於580努普(Knoop)的硬度，超過320 ksi的極限拉伸強度及至少1.5%的斷裂伸長率。該合金可能用於靜態和可移動的電接觸和探針應用中。該合金亦可能用於醫學設備。
