Calcium Fluoride vs. Beryllia
Calcium fluoride belongs to the non-glass optical ceramics classification, while beryllia belongs to the oxide-based engineering ceramics. There are 10 material properties with values for both materials. Properties with values for just one material (15, in this case) are not shown.
For each property being compared, the top bar is calcium fluoride and the bottom bar is beryllia.
Metric UnitsUS Customary Units
Material Properties
| Density, g/cm3 | 3.2 | |
| 2.9 |
| Elastic (Young's, Tensile) Modulus, GPa | 80 | |
| 350 |
| Poisson's Ratio | 0.26 | |
| 0.26 |
| Shear Modulus, GPa | 34 | |
| 180 |
| Specific Heat Capacity, J/kg-K | 860 | |
| 1050 |
| Stiffness to Weight: Axial, points | 14 | |
| 67 |
| Stiffness to Weight: Bending, points | 45 | |
| 82 |
| Thermal Conductivity, W/m-K | 9.7 | |
| 270 |
| Thermal Diffusivity, mm2/s | 3.5 | |
| 89 |
| Thermal Expansion, µm/m-K | 19 | |
| 8.0 |