← Datasheets
Al₂O₃ 99.5%
99.5% Alumina Datasheet
Typical physical, mechanical, thermal and electrical properties of 99.5% alumina.
Properties
Chemical & physical
| Al₂O₃ content | ≥99.5% |
| Density | ≥3.90 g/cm³ |
| Porosity | ≤0.5% |
Mechanical
| Vickers hardness | ≥17 GPa |
| Flexural strength | ≥350 MPa |
| Fracture toughness | 3.0–4.0 MPa·m½ |
| Elastic modulus | ≥350 GPa |
Thermal & electrical
| Thermal conductivity | ≥30 W/(m·K) |
| CTE (20–1000°C) | 7.0–8.0 ×10⁻⁶/°C |
| Max service temperature | 1700°C |
| Dielectric strength | ≥15 kV/mm |