| Item | B-1 | B-2 | B-3 |
| Reheating Linear Change 2% | 900ºC | 1.000ºC | 1.100ºC |
| Testing Temperature (g/cm3) | |||
| Volume Density | 0.7 | 0.7 | 0.75 |
| Cold Crushing Strength (Kg/cm2) | 25 | 25 | 25 |
| Thermal Conductivity at | |||
| 350 + 10ºC (Kcal/MhºC) | 0.17 | 0.18 | 0.20 |
| Reheating Linear Change % | 0.41 | 0.49 | 0.52 |
| Volume Density (g/cm3) | 0.75 | 0.75 | 0.79 |
| Cold Crushing Strength (Kg/cm2) | 26 | 26 | 28 |
| Thermal Conductivity at | |||
| 350+10ºC (Kcal/MhºC) | 0.183 | 0.19 | 0.212 |
