... used in industrial refractories, powder metallurgy industry,polysilicon,silicon target material,silicon nitride,silicon carbon bar and semi-conductors. (2)Used in ... aluminum: An additive to aluminum alloys, silicon is used to increase the fluidity and tenacity of Aluminum ... 90.020.020.0023-5um99.990.0020.0010.0001Low-grade silicon powder200 mesh97≤3.0% brandChemical Composition %Si ≥Impurity, ...