... metal like 553, 441,421,411,4105,4405, 3303,2502, 2202, 1101 etc. We are devoted to providing our customers with ... , 441,421,411,4105, 3303,2502, 2202, 1101 etc. Standard of Silicon Metal GradeChemical composition(%) Si(≥)Impurities(≤) FeAlCa 55398.500.500.500 ... packing forms are available upon customer's request. Silicon Metal 2202