Nickel-chromium, faifi tambala, ferrochrome aloyi waya ndi magetsi mkulu kutentha makutidwe ndi okosijeni kukana, mkulu mphamvu, osati kufewetsa ndi mndandanda wa ubwino. Akagwiritsidwa ntchito kwa nthawi yayitali, mtundu womwewo ndi kutalika kosatha ndi kochepa kwambiri, choncho ndi chisankho chabwino kwambiri chopangira zida zamagetsi zamagetsi.