| Item | Alumina Bubble Brick | ||
| CH-85 | CH-90 | CH-99 | |
| Al2O3(%) | ≥85 | ≥90 | ≥99 |
| SiO2(%) | ≤0.8 | ≤0.5 | ≤0.2 |
| Maximum Service Temperature( ℃) | 1680 | 1700 | 1800 |
| Bulk Density(g/cm3) | 1.4-1.7 | 1.4-1.7 | 1.4-1.7 |
| Cold Crushing Strength(Mpa) | ≥12 | ≥10 | ≥9 |
| Refractoriness Under Load (0.1Mpa, 0.6%) (℃) | ≥1650 | ≥1700 | ≥1700 |
| Thermal Conductivity ( hot surface 1000℃)(w/m.k) | ≤0.8 | ≤1.3 | ≤1.5 |
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