Item | DRL-135 | DRL-145 | DRL-150 | DRL-165 | DRL-155 | DRL-48 |
Al2O3, % ⥠| 70 | 75 | 80 | 65 | 55 | 48 |
Refractoriness ºC ⥠| 1790 | 1790 | 1790 | 1790 | 1770 | 1750 |
Apparent porosity % ⤠| 20 | 20 | 19 | 24 | 24 | 24 |
Cold crushing strength MPa ⥠| 65 | 70 | 80 | 49 | 44.1 | 39.2 |
Reheating ange rage % ⥠| ±0.1 | ±0.1 | ±0.1 | +0.1~-0.4 | +0.1~-0.4 | +0.1~-0.4 |
1450ºC*2h | 1500ºC*x2h | 1450ºC*2h | ||||
refractoriness under load (0.2Mpa) ºC ⥠| 1500 | 1550 | 1650 | 1500 | 1470 | 1420 |
Creep rate % ⤠| 0.61350ºCÃ50h | 0.6 | 0.7 | - | - | - |
1450ºCÃ50h | 1500ºCÃ50h | - | - | - |