Name corundum products Ingredient Dense fused corundum, Synthetic mullite etc Fire resistant 1790℃ Advantages 1.high density& temperature resistibility 2. low bulk density, high compressive strength, 3. resistance to high temperature 4.good thermal shocking resistance 5.Excellent corrosion resistant to acids and alkalis  6.They are not influenced by H2,CO gases during use Size and specifications 230x114x65mm The size, density, chemical composition can be customized. Technical Data Item High purity corundum bricks DL-98 Normal corundum bricks DL-95 Normal corundum bricks DL-90 Corundum Mullite Products MDL-80 Chrome corundum brick/corundum-chrome firebrick GDL-85 Al2O3％≥ 98.5 95 90 80 85 Cr2O3％≥ / / / / 8 SiO2％≤ 0.3 3.0 9.0 18 0.2 Fe2O3％≤ 0.2 0.2 0.5 0.5 0.2 R2O％≤ 0.3 0.6 0.6 0.4 0.5 Bulk Density (g/cm3 ≥) 3.0 2.9 2.9 2.7 3.1 Compressive strength at normal temperature (MPa≥) 75 100 100 60 80 Fire resistant (°C≥) 1790 1790 1790 1790 1790 Soften point under 0.2 MPa load KD °C 1700 1650 1650 1700 1700 Liner Change(%)1600°C x3h 0.2 0.2 0.2 0.3 0.2 Thermal shock stability 1100 °C water 6 10 10 20 15