| 牌號 指標(biāo) | DRL-135 | DRL-145 | DRL-150 | DRL-165 | DRL-155 | DRL-48 |
| Al2O3, % ≥ | 70 | 75 | 80 | 65 | 55 | 48 |
| 耐火度, ℃ ≥ | 1790 | 1790 | 1790 | 1790 | 1770 | 1750 |
| 顯氣孔率, % ≤ | 20 | 20 | 19 | 24 | 24 | 24 |
| 常溫耐壓強(qiáng)度,MPa ≥ | 65 | 70 | 80 | 49 | 44.1 | 39.2 |
| 重?zé)€變化率, % ≥ | ±0.1 | ±0.1 | ±0.1 | +0.1~-0.4 | +0.1~-0.4 | +0.1~-0.4 |
| 1450℃x2h | 1500℃x2h | 1450℃x2h | ||||
| 0.2MPa荷重軟化開始溫度, ℃ ≥ | 1500 | 1550 | 1650 | 1500 | 1470 | 1420 |
| 高溫蠕變率, % ≤ | 0.6 1350℃×50h | 0.6 | 0.7 | - | - | - |
| 1450℃×50h | 1500℃×50h | - | - | - | ||
