



99 Alumina Square Crucible Product properties | ||
| Item | Square Alumina Crucible | |
| Chemical Composition | AI2O3 | ≥99 |
| R2O | ≤0.2 | |
| Fe2O3 | ≤0.1 | |
| SiO2 | ≤0.2 | |
| Volume Desity(g/cm2) | ≥3.8 | |
| Apparent Porosity(%) | <1 | |
| Flexural Strength (Mpa) | >350 | |
| Compressive Strength(Mpa) | >12000 | |
| Dielectric Constant(1MHZ) | 2 | |
| Maximum Use Temperature(°C)S | 1800 | |








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