| 项目 Item | 指标 |
| G-1.3b | G-1.0 | G-0.9 | G-0.8 | G-0.7 | G-0.6 | G-0.5 | G-0.4 |
| 体积密度（g/cm3） Bulk Density | 1.3 | 1.0 | 0.9 | 0.8 | 0.7 | 0.6 | 0.5 | 0.4 |
| 常温耐压强度 Kgf/cm3 Cold crushing strength | 45 | 30 | 25 | 25 | 20 | 15 | 12 | 10 |
| 重烧线变化不大于2%的试验温度 ℃ the test temperature under which the refiring line change ≤2% | 1350 | 1350 | 1300 | 1250 | 1250 | 1200 | 1150 | 1150 |
| 导热系数**w/(m.k)平均温度 Whith average temperature at 350±25℃ the coefficient of thermal conductivity is no more than | 0.60 | 0.50 | 0.40 | 0.35 |