| Brand | PN-LW1.0 | PN-LW1.2 | PN-LW1.3 | PN-LW1.5 | PN-LW1.8 | PN-LW2.0 |
| Al2O3 (%);≥ | 28 | 32 | 35 | 38 | 45 | 45 |
| Bulk density (g/cm3); | 110℃×16h | 1.0±0.1 | 1.2±0.1 | 1.3±0.1 | 1.5±0.1 | 1.8±0.1 | 2.0±0.1 |
| Cold crushing strength (MPa); | 110℃×16h | 4 | 6 | 8 | 9 | 12 | 18 |
| 1300℃×3h | 4 (1000℃×3h) | 5 (1200℃×3h) | 7 (1200℃×3h) | 12 (1250℃×3h) | 15 | 22 |
| Linear change (%); | 110℃×16h | 0~-0.2 | 0~-0.2 | 0~-0.2 | 0~-0.2 | 0~-0.2 | 0~-0.2 |
| 1300℃×3h | 0~-0.8 (1200℃×3h) | 0~-0.8 (1200℃×3h) | 0~-0.8 (1200℃×3h) | 0~-0.8 (1250℃×3h) | 0.5~-0.5 | 0.5~-0.5 |
| Thermal Conductivity (700℃), (W/m.K); ≤ | 0.3 | 0.38 | 0.40 | 0.48 | 0.70 | 0.75 |
| Service temperature (℃) | 1000 | 1200 | 1200 | 1250 | 1300 | 1300 |
| Max service temp. ( ℃) | 1100 | 1300 | 1300 | 1300 | 1350 | 1350 |
