| Item | CNPR-180 | CNPR-170 | CNPR-165 | CNPR-160 | CNPR-155 | CNPR-150 | CNPR-145 | |
| Application Limit Temp(℃） | 1800 | 1700 | 1650 | 1600 | 1550 | 1500 | 1450 | |
| Bulk Density (g/cm3) | 2.95 | 2.75 | 2.5 | 2.3 | 2.25 | 2.2 | 2.15 | |
| Cold Crushing (Bending strength) (Kg/m²) |
110℃x24h | 300 (60) |
200 (50) |
120 (30) |
120 (35) |
80 (20) |
80 (20) |
60 (20) |
| 1200℃x3h | 500 (80) |
250 (50) |
250 (35) |
250 (35) |
250 (30) |
250 (30) |
250 (30) |
|
| 1400℃x3h | 600 (100) |
600 (90) |
600 (90) |
600 (90) |
600 (90) |
550 (80) |
- | |
| Permanent Linear Change (%) |
110℃x24h | -0.7 | -0.8 | -0.9 | -0.9 | -1 | -1 | -1 |
| 1200℃x3h | -0.6 | -0.7 | -0.5 | -0.5 | -0.3 | -0.3 | -0.25 | |
| 1400℃x3h | 0.15 | 0.15 | 0.15 | 0.15 | 0.5 | 0.2 | - | |
| Thermal Conductivity (W/m.k) |
500℃ | 1.2 | 1.05 | 0.81 | 0.81 | 0.78 | 0.75 | 0.73 |
| 1000℃ | 1.37 | 1.2 | 1.03 | 0.9 | 0.87 | 0.84 | 0.82 | |
| Chemical Composition (%) | Al2O3 | 85 | 73 | 60 | 46 | 40 | 39 | 37 |
| SiO2 | 11 | 20 | 33 | 47 | 50 | 53 | 55 | |
