Application:
Technical Data:
Item/Grade KR – 23 Type A B C D Al₂O₃, % ≥ 42 42 45 48 Fe₂O₃, % ≤ 1.2 1.2 1 1 Bulk Density, g/cm³ 0.55 0.6 0.8 1.0 Reheating Linear Change, % ≤ -0.5 (1230°C×12h) -0.55 (1260°C×12h) -0.4 (1300°C×12h) -0.3 (1300°C×12h) Cold Compression Strength, MPa ≥ 1.2 1.5 2.3 3 Thermal conductivity 350 °C, W/(m·K) 0.17 0.19 0.24 0.31
Item/Grade KR – 26 Type A B C D Al₂O₃, % ≥ 54 55 56 56 Fe₂O₃, % ≤ 0.9 0.9 1 1 Bulk Density, g/cm³ 0.7 0.8 0.9 1.0 Reheating Linear Change, % ≤ -1 (1400°C×12h) -0.65 (1400°C×12h) -0.5 (1400°C×12h) -0.5 (1400°C×12h) Cold Compression Strength, MPa ≥ 2 2.3 2.8 3.2 Thermal conductivity 350 °C, W/(m·K) 0.21 0.25 0.3 0.32
Item/Grade KR – 28 KR – 30 Type A B C A B Al₂O₃, % ≥ 64 65 66 72 72 Fe₂O₃, % ≤ 0.75 0.65 0.65 0.55 0.55 Bulk Density, g/cm³ 0.8 0.9 1.0 1.0 1.1 Reheating Linear Change, % ≤ -1 (1500°C×12h) -0.8 (1500°C×12h) -0.7 (1500°C×12h) -0.9 (1600°C×12h) -0.7 (1600°C×12h) Cold Compression Strength, MPa ≥ 2.3 2.8 3.3 3.0 3.5 Thermal conductivity 350 °C, W/(m·K) 0.28 0.32 0.34 0.4 0.43
