... composition:Fe,Mn,C,Si,P,S 4.Application:steel-making, iron casting Advantages : Improve strength and ductility of steels, additives ... decrease the harmfulness of sulfur. So when we make steel and cast iron, we always need certain account of ... widely applied to alloy steel, such as structural steel, tool steel, stainless and heat-resistant steel and abrasion-resistant steel. Chemical Compositions(GB/ ...