Ferrochrome Silicon

a ferroalloy composed chiefly of silicon and chromium; it is smelted by carbon reduction of quartzite and of granulated conversion ferrochromium or chromium ore in ore heat-treating furnaces. Ferrochrome silicon with 10–46 percent Si (the remainder is Cr, Fe, and impurities) is used in the smelting of low-alloy steel, as well as in the preparation of ferrochromium with reduced carbon content using the silicothermic process. Ferrochrome silicon with 43–55 percent Si is used in the manufacture of carbon-free ferrochromium and in the smelting of stainless steel.