Model: White fused alumina F60 Chemical compositions Al2O3: 99.56%min SiO2: SiO2%max Na2O: 0.21%max Fe2O3: 0.04%max. Physical properties Color: White Bulk density: Grain density Grain density: 3.90g/cm3min Morse hardness: 9. 25kg PVC bags + 1MT big bag.