Ceramic ball and other packings The products of our corporation have excellent acid resistance and water absorption. Thousands cubic meters of products were delivered to United States, Germany, South Africa, Singapore, Korea, England, Australia, New Zealand, Finland, Italy, Kuwait and Israel. Typical chemical composition SiO2 80%MgO0.6-1.2% SiO2+Al2O390%CaO0.6-0.9% TiO20.5-0.8%K2O2.3-3.0% Fe2O30.4-0.8%Na2O0.5-0.8% Soluble Fe: 0.1% Typical Physical properties Densityg/cm³2.3-2.4 Water Absorption %0.1-0.5 Eccentricity max - min 1.15 E - ModulusGPa60 Mohs HardnessScale7-8 Specific heat, 30f¦-100f¦J/kgK840 Thermal conductivity 30f¦-100f¦W/mK1-1.5 Coefficient of thermal expansion(20f¦-600f¦)10-6K-14.7 Heat ResistanceUp to f¦1000 Specific properties of ceramic balls SizePacking density kg/m²Spec,surface,m²/m³Void space,%Compressive strength per ball, kg 1/8135072044300 1/4135052044600 3/81350350441200 1/21350275452300 3/41350190454300 11350144457950 1¼1350120458500 1½1350100459100 2135072459100 Packing in carbon box or plastic bag or iron barral