... 10-50mm, 10-100mm, 10-150mm, etc. Ferro Silicon 75Chemical analysis:1) Si 76-78%, Al 0.1%max, C 0.05 ... %max,P 0.02%max, Ca 0.1%max, Mn 0.1%max, Cr 0.1%max, Ni 0 ... %max,P 0.025%max, Ca 0.06%max, Mn 0.25%max, Cr 0.02%max, Ni 0. ... %max,P 0.025%max, Ca 0.06%max, Mn 0.25%max, B 0.002%max, Pb 0. ... %max,P 0.04%max, Ca 0.05%max, Mn 0.1%max, Cr 0.1%max, Ni 0 ... %max,P 0.018%max, Ca 0.02%max, Mn 0.25%max, Cr 0.1%max, B 0. ...