Hafnia vs. Zirconia
Both hafnia and zirconia are oxide-based engineering ceramics. There are 10 material properties with values for both materials. Properties with values for just one material (13, in this case) are not shown.
For each property being compared, the top bar is hafnia and the bottom bar is zirconia.
Metric UnitsUS Customary Units
Material Properties
| Density, g/cm3 | 9.7 | |
| 5.7 to 6.0 |
| Elastic (Young's, Tensile) Modulus, GPa | 57 | |
| 190 to 200 |
| Electrical Resistivity Order of Magnitude, 10x Ω-m | 9.0 | |
| 4.5 to 11 |
| Maximum Temperature: Mechanical, °C | 2800 | |
| 500 to 1330 |
| Specific Heat Capacity, J/kg-K | 120 | |
| 400 to 510 |
| Stiffness to Weight: Axial, points | 3.3 | |
| 19 |
| Stiffness to Weight: Bending, points | 13 | |
| 33 to 34 |
| Thermal Conductivity, W/m-K | 1.1 | |
| 2.2 to 4.3 |
| Thermal Diffusivity, mm2/s | 0.95 | |
| 0.73 to 1.8 |
| Thermal Expansion, µm/m-K | 6.0 | |
| 8.8 to 9.5 |