Index |
||
Component |
SiO2(Wt) |
≥99.8% |
Al2O3 |
≤0.12% |
|
Fe2O3 |
≤0.02% |
|
TiO2 |
≤0.018% |
|
MgO |
≤0.004% |
|
Na2O |
≤0.004% |
|
CaO |
≤0.007% |
|
K2O |
≤0.004% |
|
Physical property |
Bulk density |
≥1.90-1.95g/cm3 |
Porosity |
≤15% |
|
Compressive strength at normal temperature |
≥50MPa |
|
Bending strength (Room temperature) |
≥25MPa |
|
Bending strength At high temperature |
≥28MPa |
|
Degree of crystallinity |
<1% |
|
Thermal shock resistance per time (1100C-downquenching ) |
|
|
Thermal property |
Thermal conductivity |
20C:0.64W/m°K 500C:0.81W/m°K 1090C:0.88W/m°K
|
Coefficient of thermal expansion (C-1)(RT~1100C) |
≤0.9×106 |
|
The max operating temperature(C) |
1650 |
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