| 项目Ltem | 氧化铝空心球砖Alumina bubble brick | 氧化锆空心球砖Zirconia bubble brick |
| | 85砖 | 87砖 | 90砖 | 95砖 | 99砖 | 98砖 |
| AL2O3% | ≥85 | ≥87 | ≥90 | ≥95 | ≥99 | － |
| ZrO2% | － | － | － | － | － | ≥98（含稳定剂） |
| SiO2% | ≤13 | ≤12 | ≤8 | ≤4 | ≤0.2 | ≤0.2 |
| Fe2O3% | ≤0.3 | ≤0.2 | ≤0.2 | ≤0.2 | ≤0.2 | ≤0.2 |
| 体积密度g/cm3Bulk density | 1.2－1.7 | 1.3－1.5 | 1.4－1.7 | 1.4-1.7 | 1.4－1.7 | 2.5-3.5 |
| 常温耐压强度MPaCold crushing strength | ≥12 | ≥10 | ≥10 | ≥10 | ≥9 | ≥8 |
| 荷重软化开始温度℃（0.1MPa ，0.6%）Refractoriness under load | ≥1650 | ≥1650 | ≥1700 | ≥1700 | ≥1700 | ≥1700 |
| 重烧线变化率%（1600℃x3h）Reheating linear change | ±0.3 | ±0.3 | ±0.3 | ±0.3 | ±0.3 | ±0.2 |
| 热膨胀系数x10-6(室温-1300℃)Thermal expansion coefficient | ~7.8 | ~7.8 | ~8.0 | ~8.0 | ~8.6 | ~9.1 |
| 导热系数 w/(m.k)(平均温度800℃)Thermal Conductivity | ≤0.8 | ≤0.8 | ≤1.3 | ≤1.4 | ≤1.5 | ≤0.3 |
| 最高使用温度℃Max service temperature | 1680 | 1700 | 1700 | 1700 | 1800 | 2200 |