| Item | Fireclay Insulation Brick | |||
| NG-0.5 | NG-0.6 | NG-0.8 | NG-1.0 | |
| Al2O3(%) ≥ | 35 | 40 | 42 | 42 |
| Fe2O3(%) ≤ | 2.5 | 2.5 | 2.0 | 2.0 |
| Bulk Density (g/cm3) ≤ | 0.5 | 0.6 | 0.8 | 1.0 |
| Cold Crushing Strength(Mpa) ≥ | 1.0 | 1.5 | 2.0 | 2.5 |
| Linear Change On Reheating 2% (℃*h) ≤ | 1000℃*12h | 1150℃*12h | 1200℃*12h | 1200℃*12h |
| Thermal Conductivity(w/m.k,{350±25℃})≤ | 0.18 | 0.25 | 0.35 | 0.5 |
| Maximum Service Temperature (℃) ≥ | 1000 | 1100 | 1150 | 1200 |