Chromic, Molybdenum, Nitrogen uye Nickel ndiyo yakakosha nzira dzezvikamu, izvo zvine chekuita nehunyanzvi hwekuita, zvemuviri uye zvezvemanyama zvivakwa zveDuplex simbi. Chromic inodiwa kuti igadzire nzvimbo yakasarudzika yeChromium yepasita yakaringana kuchengetedza simbi kubva munyoro emweya wekutora. Yakakwira iyo Chromic yezviri, zviri nani kupesana kwecorrosion.