silicon metal 441 Our company, XIAMEN K METEL CO., LTD have our own 4 factories of silicon metal and aluminium ingot in China, we can produce all kinds specification of silicon metal, especially high purity grade, such as 553# 441# 3303# 331# 2502# 2202# 1501# and 1101# with low P, B, More importantly, more than 60000 tons of silicon metal have been outputted by our company every year, if any of the articles meet your interest and if you any further questions, please don't hesitate to contact us, we shall be only too glad to answer your inquiries and give you competitive price at any time . Si: 97% Fe:1.0% Al:1.2% Ca:0.8% Si:96% Fe:1.5% Al:1.5% Ca:1.5% Silicon metal 553 Si 98.5% Fe < 0.50max Al < 0.50max Ca < 0.3omax Silicon metal 441 Si 99% Fe < 0.40max Al < 0.40max Ca < 0.10max Silicon metal 3303 Si 99.4% Fe < 0.30max Al < 0.30max Ca < 0.03max Silicon metal 2202 Si 99.58% Fe < 2000 PPM Al < 2000 PPM Ca < 200 PPM P< 20 PPM B< 5 PPM Silicon Metal Specification for each gradeItem No.SiFeAlCaP220299.50.200.200.0230ppm250299.50.250.250.0240ppm330399.50.300.300.0340ppm441990.400.400.1040ppm55398.50.500.500.3040ppm