Corundum weight: 3.9g/m3 
 Bulk density :1.68-1 .95g/cm3 
 Mohs hardness: 9 
 Typical composition (%): Ai2O3: 96.00% 
 TiO2: 2.60%, SiO: 0.89% 
 CaO: 0.25%, MgO: 0.15% 
 Fe2O: 0.11% 
 Shape: Diamond 
 Color: Brown 
 Packing: 25kg loading 
 With moderate hardness, toughness, resistance to crushing ability, high temperature, oxidation resistance, corrosion resistance, low cost, suitability and other characteristics. 
 Copper alloys are widely used in general as well as exercise and other iron and hard bronze high tensile strength metal. Electroplating, painting, iron and fluoride