... blasting 1) size :16-320mesh 2)packge:25kg/bag white fused alumina for sand blasting With high-quality aluminum oxide powder ... as raw material, white corundum is formed by the fused smelting. It has the white color, high hardness, toughness, high ... . 95Linear expansion coefficient7-9Song share≥ 3.6Porosity≤ 8.5 white fused alumina