Hafnia vs. Yttria
Both hafnia and yttria are oxide-based engineering ceramics. There are 10 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.
For each property being compared, the top bar is hafnia and the bottom bar is yttria.
Metric UnitsUS Customary Units
Material Properties
| Density, g/cm3 | 9.7 | |
| 5.0 |
| Elastic (Young's, Tensile) Modulus, GPa | 57 | |
| 120 |
| Maximum Temperature: Mechanical, °C | 2800 | |
| 2000 |
| Melting Onset (Solidus), °C | 2900 | |
| 2440 |
| Specific Heat Capacity, J/kg-K | 120 | |
| 440 |
| Stiffness to Weight: Axial, points | 3.3 | |
| 13 |
| Stiffness to Weight: Bending, points | 13 | |
| 32 |
| Thermal Conductivity, W/m-K | 1.1 | |
| 0.3 |
| Thermal Diffusivity, mm2/s | 0.95 | |
| 0.14 |
| Thermal Expansion, µm/m-K | 6.0 | |
| 8.0 |