... CompositionFe,Si,Ca,Mn,Cr,S Ferro Silicon Ferro silicon is composed of iron and silicon ferroalloy. Ferrosilicon is coke, steel ... , bearing steel, heat-resistant steels and electrician silicon-steel fesi in ferroalloy production of chemical industry, ... used as a reductant.detail Item:75#72#Technical Data:SI 75%AL 2.0%C ... %P 0.04%S 0.02%SI 72%AL 2.0%C 0.2%P ... 86-0411-83611644/0086-15998488207 Ferro silicon