7075 Aluminum vs. Yttria
7075 aluminum and yttria belong to fundamentally different material chemistries. 7075 aluminum is a metal, while yttria is a ceramic material. Therefore, their performance will be even more dissimilar than would be suggested by the difference in properties. There are 10 material properties with values for both materials. Properties with values for just one material (23, in this case) are not shown.
For each property being compared, the top bar is 7075 aluminum and the bottom bar is yttria.
Metric UnitsUS Customary Units
Material Properties
| Density, g/cm3 | 3.0 | |
| 5.0 |
| Elastic (Young's, Tensile) Modulus, GPa | 70 | |
| 120 |
| Maximum Temperature: Mechanical, °C | 200 | |
| 2000 |
| Melting Onset (Solidus), °C | 480 | |
| 2440 |
| Specific Heat Capacity, J/kg-K | 870 | |
| 440 |
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 46 | |
| 32 |
| Thermal Conductivity, W/m-K | 130 | |
| 0.3 |
| Thermal Diffusivity, mm2/s | 50 | |
| 0.14 |
| Thermal Expansion, µm/m-K | 23 | |
| 8.0 |