Ceramic seal faces have the property of the resistant-high-temperature, resistant corrosion, resistant-wearing and good sealing and are widely used in spacecraft, machinery, metallurgy, printing and dyeing, foodstuff, pharmaceutical, auto industry and so on.
| AI2O3 Ceramic physical property | ||||
| Technical Parameter | Unit | 95% | 99% | 99.5% |
| Content of Al2O3 | % | 95 | 99 | 99.5 |
| Density | g/cm3 | 3.7 | 3.88 | 3.9 |
| Hardness | HRA | 85 | 88 | 90 |
| Porosity Rate | % | <0.4 | <0.2 | <0.15 |
| Fractural Strength | Mpa | 250 | 310 | 350 |
| Coefficient of Heat Expansion | 10-6/K | 5.5 | 5.3 | 5.2 |
| Thermal Conductivity | W/M.K | 27.8 | 26.7 | 26 |
