We provide platinum tungsten, platinum nickel, platinum iridium alloy wires, etc., which have excellent superelasticity and shape memory properties as well as biocompatibility, wear resistance, corrosion resistance, high damping and other excellent characteristics. They are key components in the fields of medical embolization coils, PTCA (percutaneous transluminal coronary angioplasty) guide wire springs, pacemakers, cochlear implants, etc.