Size:F24-F80 Al2O3:95% Fe2O3:¡Ü0.5% SiO2:¡Ü1.5% TiO2:¡Ü3.0% Maginitic materials:¡Ü0.05% Size:F90-F150 Al2O3:94% Fe2O3:¡Ü0.5% SiO2:¡Ü1.5% TiO2:¡Ü3.0% Maginitic materials:¡Ü0.03% Size:F180-F240 Al2O3:93% Fe2O3:¡Ü0.5% SiO2:¡Ü1.5% TiO2:¡Ü3.5% Maginitic materials:¡Ü0.02% Size:1#-63# Al2O3:94.5%/92.5% Fe2O3:¡Ü0.5% SiO2:¡Ü1.8% TiO2:¡Ü4.0% Maginitic materials:-- Melting point:2050 Refractoriness:1850 Bulk Density:3.85g/cm3 Mohs hardness:9.00. 20kg bags/25kg bags/1000kg bags/50lbs.