1.large supply 2.for steel-making 3.advanage:improve hardness and elasticity of steel 4. Chemical Composition: Fe,Mn,C,Si ... is used to precipitate and diffuse oxygen.In the production of ductile casting iron,it is an important inoculant and ... ,strength,elasticity and permeability of steellower the hysteresis loss of the transformer. to prevent the formation of carbides.Promote the precipitation ...