| Type | Common | Standard | High Purity | High Aluminium | Zirconia | |
| Classification temperature (°C) | 1100 | 1260 | 1260 | 1360 | 1400 | |
| Working Temperature (°C) | < 1000 | 1050 | 1100 | 1260 | 1350 | |
| Color | White | Pure white | Pure white | Pure white | Pure white | |
| Density (kg/m3) | 96/128/160 | 96/128/160 | 96/128/160 | 128/160 | 128/160 | |
|
Shrinkage on heating (%)
(24 hours, density as 128/m 3 ) |
-4
(1000°C) |
-3
(1000°C) |
-3
(1100°C) |
-3
(1250°C) |
-3
(1350°C) |
|
| Thermal conductivity by different temperature (w/m.k) (density as 128kg/m 3 ) |
0.09(400°C)
0.16(800°C) |
0.09(400°C)
0.16(800°C) |
0.09(400°C)
0.16(800°C) 0.20(1000°C) |
0.12(600°C)
0.20(1000°C) |
0.16(800°C)
0.20(1000°C) |
|
|
Tensile strength (MPa)
(density as 128kg/m 3 ) |
0.04 | 0.04 | 0.04 | 0.04 | 0.04 | |
|
Chemical composition
(%) |
AL 2 O 3 | 44 | 46 | 47-49 | 52-55 | 39-40 |
| AL 2 O 3 +SiO 2 | 96 | 97 | 99 | 99 | - | |
| AL 2 O 3 +SiO 2 +ZrO 2 | - | - | - | - | 99 | |
| ZrO 2 | - | - | - | - | 15-17 | |
| Fe 2 O 3 | <1.2 | <1.0 | 0.2 | 0.2 | 0.2 | |
| Na 2 O+K 2 O | ≤0.5 | ≤0.5 | 0.2 | 0.2 | 0.2 | |
| Size (mm) | 14400/7200/4500/3600×1220/610×6-50; Other sizes can be available. | |||||
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