White fused alumina WFA 1,Used for refractory,castable etc 0-1mm 1-3mm 3-5mm 5-8mm 8-10mm... Chemical Composition Al2O3:99.55%min Fe2O3:0.04%max Na2O:0.30%max 80mesh-0 100mesh-0 120mesh-0 150mesh-0 200mesh-0 325mesh-0 Al2O3:99.0%min Na2O:0.40%max Fe2O3:0.20%max 2,Used for blasting,grinding polishing etc F8-F2000 JIS8-JIS8000 Al2O3:99.2-99.6% Fe2O3:0.04-0.08% Na2O:0.23-0.35% Physical Properties B.D:1.75-1.95g/cm3 Specific Gravity:3.95g/cm3 Mohs Hardness:9.0