Yttria vs. SiAlON
Yttria belongs to the oxide-based engineering ceramics classification, while SiAlON belongs to the non-oxide engineering ceramics. There are 10 material properties with values for both materials. Properties with values for just one material (15, in this case) are not shown.
For each property being compared, the top bar is yttria and the bottom bar is SiAlON.
Metric UnitsUS Customary Units
Material Properties
| Compressive (Crushing) Strength, MPa | 390 | |
| 2620 |
| Density, g/cm3 | 5.0 | |
| 3.3 |
| Elastic (Young's, Tensile) Modulus, GPa | 120 | |
| 290 |
| Maximum Temperature: Mechanical, °C | 2000 | |
| 1200 |
| Specific Heat Capacity, J/kg-K | 440 | |
| 880 |
| Stiffness to Weight: Axial, points | 13 | |
| 50 |
| Stiffness to Weight: Bending, points | 32 | |
| 67 |
| Thermal Conductivity, W/m-K | 0.3 | |
| 19 |
| Thermal Diffusivity, mm2/s | 0.14 | |
| 6.4 |
| Thermal Expansion, µm/m-K | 8.0 | |
| 3.6 |