1.Low thermal conductivity,
2.Low heat storage,
3.High alumina, low iron and alkali flux content,
4.Accurate dimension.
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Item | Model | Volume Density g/cm3 |
Reheating Linear Change (1500℃×12h%) |
Cold Crushing Strength (MPa) |
Flexural Strength(MPa) | Thermal Conductivity(W/m.K) | Chemical Composition% | ||
Al2O3 | SiO2 | Fe2O3 | |||||||
JM-28 |
A | 0.8 |
-1.0 | 2.5 | 1.4 | 0.28 | 64 | 33 | 0.7 |
B | 0.9 |
-0.8 | 2.8 | 1.6 | 0.32 | 65 | 32 | 0.6 | |
C | 1.0 |
-0.7 | 3.5 | 1.8 | 0.34 | 66 | 31 | 0.6 |
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