Ferrosilicon (FeSi) is a ferroalloy composed of iron and silicon is widely used as a deoxidizer and alloying agent in steel and iron production. In steel mills, it enhances strength and corrosion resistance while removing oxygen from molten metal. In gray and ductile iron foundries ferrosilicon is used to control chill depth and promote graphite formation. Supplied in 50% and 75% grades,