Item | JK 23 | JK 26 | JK 28 | JK 30 |
AL2O3(%) | 38-44 | 50-58 | 65-70 | 70-73 |
Fe2O3(%) | 1.0 | 0.9 | 0.8 | 0.7 |
Classification Temperature (°C) | 1350 | 1430 | 1540 | 1600 |
Bulk Density (g/cm3) | 0.8-1 | 0.8-1 | 0.8-1 | 0.8-1 |
Reheating Linear Change (%) CT-30 °CX 8H | 1250°C -0.5 | 1400°C -0.5 | 1500°C -0.5 | 1550°C -0.5 |
Cold Crushing Strength (Mpa) | 2.0-3.5 | 2.0-3.5 | 2.0-3.5 | 2.0-3.5 |
Modulus of Rupture (Mpa) | 1.5 | 1.7 | 1.8 | 2.0 |
Thermal conductivity400°C(W/m.k) | 0.25 | 0.27 | 0.32 | 0.41 |
Thermal Expansion1000°C(%) | 0.5 | 0.7 | 0.8 | 0.9 |
Item | B-1 | C-1 | C-2 |
AL2O3(%) | 25-30 | 35-40 | 45-50 |
Fe2O3(%) | 2 | 1 | 1 |
Classification Temperature (°C) | 1000 | 1300 | 1400 |
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