Main for mid-light seals parts in general working conditions.
TECHNICAL INDEX
Chemical content:
| Item
| Al2O3 | Fe2O3 | Na2O |
| Al2O3-99 | ≥99 | ≤0.1 | ≤0.3 |
| Al2O3-97 | ≥97 | ≤0.1 | ≤0.4 |
Physical index:
| Item | Al2O3-99 | Al2O3-97 |
| Density (g/cm3) | ≥3.9 | ≥3.75 |
| Compressive Strength | 540 | 380 |
| Porosity(%) | ≤0.4 | ≤0.4 |
| Hardness (HRA) | ≥90 | ≥85 |
| Bending strength (kgf/cm2) | ≥2600 | ≥2500 |
| Thermal Conductivity w/mok | 16.75 | 16.75 |
| Coefficient of Thermal Expansion×10 1/℃ | 5.3 | 5.5 |
| Thermal shock resistance (times) | ≥5 | ≥5 |
