Waya Pt-iridium bụ ihe eji arụ ọrụ abụọ nke platinum nke nwere selenium. Ọ bụ ihe ngwọta siri ike na-aga n'ihu na okpomọkụ dị elu. Mgbe ọ dị jụụ nwayọ ruo 975 ~ 700 ºC, mmebi nke usoro siri ike na-eme, mana usoro nhazi nke usoro na-aga n'ihu nwayọ nwayọ. Ọ nwere ike ime ka iguzogide nchara nke platinum ka mma nke ukwuu n'ihi na ọ dị mfe ịgbaze na oxidation. E nwere Ptlr10, Ptlr20, Ptlr25, Ptlr30 na alloys ndị ọzọ, nwere ike siri ike na ebe agbaze dị elu, iguzogide nchara dị elu na obere iguzogide kọntaktị, ọnụego nchara kemịkalụ bụ 58% nke platinum dị ọcha, mbelata ibu oxidation bụ 2.8mg/g. Ọ bụ ihe kọntaktị eletriki ochie. Ejiri ya maka kọntaktị ọkụ dị elu nke injin aero-engine, kọntaktị eletriki nke relays nwere nnukwu mmetụta na injin Wei; potentiometers na brushes mgbanaka conductive nke sensọ ziri ezi dị ka ụgbọelu, missiles na gyroscopes

Ngwa:

A na-eji ya eme ihe n'ọtụtụ ebe n'ihe gbasara kemịkalụ, eriri, na ihe mkpuchi ọkụ.