Common | Standard | HighPure | High Aluminum | Zirconium | ||
Classification temperature(C) | 1100 | 1260 | 1260 | 1360 | 1430 | |
Work temperature(°C) | <1000 | 1050 | 1100 | 1200 | 1350 | |
Color | White | Pure white | Pure white | Pure white | Pure white | |
Density (kg/m3) | 96 | 96 | 96 | 128 | 128 | |
Permanent linear shrinkage(%)(after24 hours,density 128kg/m3) | -4 | -3 | -3 | -3 | -3 | |
Thermal conductivity (w/m.k) density 128kg/m3)
| 0.09(400°C) | 0.09(400°C) | 0.09(400°C) | 0.132(600°C) | 0.76(600°C) | |
Tensile strength (Mpa) density128kg/m3) | 0.08-0.12 | 0.08-0.12 | 0.08-0.12 | 0.08-0.12 | 0.08-0.12 | |
Chemical Composition (%) | AL2O3 | 44 | 46 | 47--49 | 52-55 | 39-40 |
AL203+SIO2 | 96 | 97 | 99 | 99 | - | |
AL2O3+SIO2+Zro2 | - | - | - | - | 99 | |
Zro2 | - | - | - | - | 15-17 | |
Fe2O3 | <1.2 | <1.0 | 0.2 | 0.2 | 0.2 | |
Na2O+K2O | ≤0.5 | ≤0.5 | 0.2 | 0.2 | 0.2 |