Yttria vs. Calcium Fluoride
Yttria belongs to the oxide-based engineering ceramics classification, while calcium fluoride belongs to the non-glass optical ceramics. There are 10 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.
For each property being compared, the top bar is yttria and the bottom bar is calcium fluoride.
Metric UnitsUS Customary Units
Material Properties
| Density, g/cm3 | 5.0 | |
| 3.2 |
| Elastic (Young's, Tensile) Modulus, GPa | 120 | |
| 80 |
| Light Transmission Range, µm | 0.3 to 12 | |
| 0.15 to 9.0 |
| Melting Onset (Solidus), °C | 2440 | |
| 1420 |
| Specific Heat Capacity, J/kg-K | 440 | |
| 860 |
| Stiffness to Weight: Axial, points | 13 | |
| 14 |
| Stiffness to Weight: Bending, points | 32 | |
| 45 |
| Thermal Conductivity, W/m-K | 0.3 | |
| 9.7 |
| Thermal Diffusivity, mm2/s | 0.14 | |
| 3.5 |
| Thermal Expansion, µm/m-K | 8.0 | |
| 19 |