High-carbon ferrochromium (containing 4-8% of carbon), medium-carbon ferrochrome (containing 0.5-4% of carbon), low-carbon ferrochrome (containing 0.15-0.50% of carbon), micro-carbon ferrochrome (containing 0.06 carbon) %), ultrafine carbon ferrochromium (with carbon content less than 0.03%), metallic chromium, silicon-chromium alloy ferrochromium: ferroalloy composed of chromium and iron, is an important alloy additive for steelmaking.
The chromite ore used for smelting ferrochrome generally contains Cr2O340-50%, and the ratio of chromium to iron is greater than 2.8. Mass-produced "charge grade ferrochrome" containing 50% of chromium in recent years uses ores containing Cr2O3 and a low ratio of chromium to iron.
