Zinc Selenide vs. Hafnia
Zinc selenide belongs to the non-glass optical ceramics classification, while hafnia belongs to the oxide-based engineering ceramics. There are 9 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.
For each property being compared, the top bar is zinc selenide and the bottom bar is hafnia.
Metric UnitsUS Customary Units
Material Properties
| Density, g/cm3 | 5.3 | |
| 9.7 |
| Elastic (Young's, Tensile) Modulus, GPa | 69 | |
| 57 |
| Melting Onset (Solidus), °C | 1520 | |
| 2900 |
| Specific Heat Capacity, J/kg-K | 340 | |
| 120 |
| Stiffness to Weight: Axial, points | 7.3 | |
| 3.3 |
| Stiffness to Weight: Bending, points | 26 | |
| 13 |
| Thermal Conductivity, W/m-K | 17 | |
| 1.1 |
| Thermal Diffusivity, mm2/s | 9.5 | |
| 0.95 |
| Thermal Expansion, µm/m-K | 7.3 | |
| 6.0 |