... 75 3.Ferro alloy 4.Low carbon FeSi FeSi(ferroalloy, FeSi75)1. Si>75%, C<0.2%, Al<2.0%, P<0 ... .05%, S<0.02%, 10-50mm>90% 2. Si 7479%, C<0.04%, Al<0.1%, Ti<0.01 ... %, Zr<0.03%, Pb<0.003%, 10-50mm>90%3. Si 7479%, C<0.04%, Al<0.1%, Ti<0.05 ... %, Zr<0.03%, Pb<0.003%, 10-50mm>95% FeSi(ferroalloy, FeSi75)