Ferrosilicon lumps Si:75%/72%min Al:2.0%max C ... 04%max Size:10-50mm,50-100mm Ferrosilicon lumps Si:75%/72%min Al:2.0%max C:0 ... used in low-alloy structural steel, spring steel, bearing steel, heat-resistant steel and electrical silicon steel among the ferrosilicon normally used as ... approved by the State Ministry of NVOCC, MSC MAERSK, CMATS LINE, SITC, ENERGREEN APL, PIL, HDSL, COSCO, CHINA SHIPPING ...