| Customization: | Available |
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| Feature: | Low Thermal Expansion Rate |
| Refractoriness (℃): | 1580< Refractoriness< 1770 |
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| Chemical composition | |
| Sio2 | 13.59% |
| Al2o3 | 79.62% |
| Fe2o3 | 0.15% |
| Tio2 | 0.12% |
| Cao | 1.62% |
| Mgo | 0.81% |
| K2O | 0.15% |
| Na2O | 0.11% |
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