Isingeniso
Xa umongo weChromium uwuthole 12%, kudala izikhumba zeCr₇C₃ eziphakeme kakhulu ezinemicrohardness yeHV1300~1800, okuyapha kakhulu kukaFe₃C evela eBantu White Cast Iron (HV800~1100), okusinika ukukhulula kahle.
Izikhumba zibonakala njenge-woven network noma isithombe sechrysanthemum, zinikela ukuthobela okuhle; ngokusebenzisa izindlela ezahlukene zokulahla umongo, umongo ungashintshelwa kuququzelelo kukaAustenitic kuya kuququzelelo kukaMartensitic, ukulungiselela kuzo zonke izimo zokusebenza.