Detailed Product Description Ferro alloys:Rare-earth Ferro Silion Magnesium Alloy is shape with metal luster. It is solid and brittle so that it is easy to smash,and it glisten with blue luster from silver grey body.Re:4.0-6.0, Mg:7.0-9.0,Ca:1.0-2.0,SI:Max44,Mn:max2.0,Ti:max1.0,MgO:Max1.2 ,Fe:rest