Alumina 99.5% (Al2O3) vs Beryllium Oxide (BeO beryllia 99.5%)
Property comparison of Alumina 99.5% (Al2O3) and Beryllium Oxide (BeO beryllia 99.5%), both ceramic.
| Property | Alumina 99.5% (Al2O3) | Beryllium Oxide (BeO beryllia 99.5%) | Difference |
|---|---|---|---|
| Poisson ratio | 0.22 | 0.26 | +18% |
| Density | 3,890 kg/m³ | 2,850 kg/m³ | -27% |
| Thermal conductivity | 30 W/m·K | 285 W/m·K | +850% |
| Specific heat | 880 J/kg·K | 1,030 J/kg·K | +17% |
| Coefficient of thermal expansion | 0.000008 1/K | 0.000009 1/K | +5% |
Difference is Beryllium Oxide (BeO beryllia 99.5%) 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
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