Alumina 99.5% (Al2O3) vs Alumina 99.9% (Al2O3)
Property comparison of Alumina 99.5% (Al2O3) and Alumina 99.9% (Al2O3), both ceramic.
| Property | Alumina 99.5% (Al2O3) | Alumina 99.9% (Al2O3) | Difference |
|---|---|---|---|
| Elastic modulus | 375,000 MPa | 380,000 MPa | +1% |
| Shear modulus | 152,000 MPa | 155,000 MPa | +2% |
| Poisson ratio | 0.22 | 0.22 | 0% |
| Density | 3,890 kg/m³ | 3,960 kg/m³ | +2% |
| Thermal conductivity | 30 W/m·K | 32 W/m·K | +7% |
| Specific heat | 880 J/kg·K | 880 J/kg·K | 0% |
| Coefficient of thermal expansion | 0.000008 1/K | 0.000008 1/K | -1% |
Difference is Alumina 99.9% (Al2O3) relative to Alumina 99.5% (Al2O3). Values are taken from the representative row of each material; both materials may have multiple heat treatments or conditions on their individual pages.
Identification
- standard
- ASTM
- standard
- ASTM
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