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Item Brand | JM23 | JM26 | JM28 | JM30 | ||
Max Temperature ( C) | 1260 | 1460 | 1540 | 1700 | ||
Bulk Density (g/cm3) | 0.55-0.60 | 0.8 | 0.89 | 1.03 | ||
Cold Crushing Strength (Mpa) | 1.2 | 1.6 | 2.1 | 2.5 | ||
Modulus of Rupture (Mpa) | 0.9 | 1.4 | 1.6 | 2.1 | ||
Reheating Linear Change (%) CT -30 °CX 8H | 1230 °C -0.5 | 1400 °C -0.5 | 1510 °C -0.5 | 1620 °C -0.9 | ||
Thermal Expansion 1100 °C( % ) | 0.5 | 0.7 | 0.8 | 0.8 | ||
Thermal conductivity (W/m.k ) | 400 °C | 0.14 | 0.27 | 0.32 | 0.41 | |
600 °C | 0.16 | 0.29 | 0.34 | 0.43 | ||
800 °C | 0.18 | 0.31 | 0.36 | 0.44 | ||
1000 °C | 0.20 | 0.33 | 0.38 | 0.45 | ||
Al2O3 % | 37 | 50 | 64 | 72 | ||
Fe2O3 % | 1.0 | 1.0 | 1.0 | 0.5 | ||






















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