Silicon Metalis one of the main raw-materials used for steel and iron maker. We have 441 , 553, 3303, 2202 grades: Commodity Name: Silicon Metal Specs.: Si(Min) Fe(Max) Al(Max) Ca(Max) 98.5% 0.5% 0.5% 0.3% 99% 0.4% 0.4% 0.1% 99% 0.3% 0.3% 0.03% 99.2% 0.2% 0.2% 0.02% Size: 10-50mm or 10-100mm,90%Min