Abrasive articles made of it are suited for grinding metals of high-tensile strength such as steel, annealed malleable iron. BFASpecTypicalAl2O3(%, min) 94.595.62SiO2(%, max)21.53Fe2O3(%, max)0.30.13TiO2 (%, max)43Bulk density(g/cm3, min)3.53.5Apparent porosity (%, min)3.53 Size (mm):8-5/5-3/3-1/1-0/ 220mesh/325mesh