... general industrial applications. Typical Chemical Analysis:Al2O3 96.08%TiO2 2.39%SiO2 1.08%Fe2O3 0.07% Physical Properties:Color BrownShape ... , 9.0 Mohs scaleMagnetic Material 0.0076% Grain Sizes Available (F):12, 14, 16, 20, 22, 24, 30, 36, 40, 46, 54 ... , 150, 180, 220, 240 Grain Size Distribution :Upon ANSI B74.12-2001, FEPA-Standard 42-1:2006 or ISO 8486-1.