| Item 项目 | Lightwight insulation fireclay brick 轻质粘土保温砖 | |||||||
| NG-1.5 | NG-1.3a | NG-1.3b | NG-1.0 | NG-0.9 | NG-0.8 | NG-0.7 | ||
| Bulk Density 体积密度(g/cm3) | ≤ | 1.5 | 1.3 | 1.3 | 1.0 | 0.9 | 0.8 | 0.7 |
| Cold Crushing Strength 常温耐压强度(Mpa) | ≥ | 10 | 8 | 8 | 6 | 4 | 4 | 2 |
| Temp.at Reheating Linear Change Rate≤2% 重烧线变化不大于2%的试验温度(℃) | 1400 | 1400 | 1350 | 1350 | 1300 | 1250 | 1250 | |
| Thermal conductivity 导热系数W(m.k) | 350±25℃ | 0.70 | 0.60 | 0.60 | 0.50 | 0.40 | 0.35 | 0.35 |