White Fused Alumina: Al2O3 98.5%min, F 12# - 240# ; Al2O3 97.5%min, W 1# - 63#; Al2O3 99.0%min, 0-1, 1-3, 3-5, 5-8mm etc. White Fused Alumina Al2O3 98.5%min, F 12# - 240#Al2O3 97.5%min, W 1# - 63#Al2O3 99.0%min, 0-1, 1-3, 3-5, 5-8, 8-12mmRefractory temperature: 1900Bulk density: 3.90kg/m3