| Item | Unit | Index | |
| Al2O3 ≥ | % | 43 | |
| SiO2 ≥ | % | 40 | |
| Bulk Density ≤ | g/cm³ | 1.0 | |
| Max Service Temperature ≥ | ℃ | 1050 | |
| Linear Change On Reheating | 900℃×3h | % |
+0.1 |
| 1200℃×3h | - | ||
| 1500℃×3h | - | ||
| Modulus of Rupture | 110℃drying | Mpa | 1.5 |
| 1200℃×3h | 1.8 (900℃×3h) |
||
| Crushing Strength | 110℃drying | Mpa | 5 |
| 1200℃×3h | 3(900℃×3h) | ||
| Thermal Conductivity ≤ | W/m·k | 0.2（500±25℃） | |
