项目 | 高强高铝球 | 低蠕变高铝球 | |||
φ40 mm | φ50 mm | φ60 mm | φ50 mm | φ60mm | |
Al2O3% | ≥65 | ≥65 | ≥65 | ≥65 | ≥65 |
Fe2o3% | ≤2.2 | ≤2.2 | ≤2.2 | ≤2.0 | ≤2.0 |
℃耐火度 | ≥1790 | ≥1790 | ≥1790 | ≥1790 | ≥1790 |
%显气孔率 | ≤24 | ≤24 | ≤22 | ≤22 | ≤22 |
g/cm³体积密度 | ≥2.2 | ≥2.3 | ≥2.4 | ≥2.4 | ≥2.4 |
(Mpa)耐压强度 | ≥10000 | ≥12000 | ≥15000 | ≥13000 | ≥15000 |
荷重软化温度 | ≥1460 | ≥1460 | ≥1480 | ≥1480 | ≥1500 |
重烧线变化率 | - | - | - | 0.1~0.4 | 0.1~0.4 |
%蠕变率 | - | - | - | 1450℃x50h ≤1 | 1450℃x50h≤1 |