... as additives, alloy additives, mainly used in the production of steel and iron.4.FeSiMgRe is a kind of good spheroidizing ... the addtives and alloy agent that of iron casting and steel making.Characteristics:Use "one-step" production working procedure, second thin ... blond, a metallic luster, hard and easily broken.Suitable for steel, cast iron, or made as additive in rare earth middle ...