| Type: | Quartz |
|---|---|
| Density: | Medium |
| Finish: | Hole |
| Transport Package: | Plywood Case |
| Specification: | Rohs |
| Trademark: | shangtao |
| Customization: |
|---|
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| Data | ||
| Chemical | 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 |
| apparent porosity | ≤15% | |
| compression strength under normal temperature | ≥50MPa | |
| bending strength under normal temperature (room temperature) | ≥25MPa | |
| bending strength under high temperature | ≥28MPa | |
degree of crystallinity |
<1% |
|
| thermal shock resistance /time(1100ºC-chill) | ≥10 times | |
| thermal performance | thermal conductivity | 20ºC:0.64W/m°K 500ºC:0.81W/m°K 1090ºC:0.88W/m°K |
| thermal expansivity (ºC-1)(RT~1100ºC) | ≤0.9×106 | |
| Max using temperature(ºC) | 1650 | |
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