Wayar Pt-iridium wani alloy ne na tushen platinum wanda ya ƙunshi selenium. Yana da ci gaba mai ƙarfi bayani a babban zafin jiki. Lokacin da sannu a hankali sanyaya zuwa 975 ~ 700 ºC, m lokaci bazuwar faruwa, amma lokaci ma'auni tsari ci gaba a hankali. Zai iya inganta juriya na lalata platinum sosai saboda sauƙin canzawa da iskar oxygen. Akwai Ptlr10, Ptlr20, Ptlr25, Ptlr30 da sauran gami, tare da high taurin da high narkewa batu, high lalata juriya da low lamba juriya, da sinadaran lalata kudi ne 58% na tsarki platinum, da kuma hadawan abu da iskar shaka nauyi asara ne 2.8mg/g . Kayan tuntuɓar lantarki ne na gargajiya. An yi amfani da shi don manyan lambobi masu ƙonewa na injunan aero, lambobin lantarki na relays tare da babban hankali da injin Wei; potentiometers da gogaggen zobe na daidaitattun na'urori masu auna firikwensin kamar jirgin sama, makamai masu linzami da gyroscopes.