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SiO2 | min94.5% |
Al2O3 | max 1.5% |
Fe2O3 | max 1.5% |
CaO | max 2.5% |
Apparent porosity | max 22(24)% |
CCS MPa | min40(35) |
0.2 Mpa refractoriness under load, °C | min 1650 |
Reheating linear change,%,1450°C*2h | from 0 to 2 |
True density | 2.33(2.34)g/cm3 |
Residual quartz | max 1.0% |
Thermal expansion rate (1000°C)% | 1.28 |
silicon brick