Forsterite vs. Synthetic Sapphire
Both forsterite and synthetic sapphire are oxide-based engineering ceramics. There are 8 material properties with values for both materials. Properties with values for just one material (18, in this case) are not shown.
For each property being compared, the top bar is forsterite and the bottom bar is synthetic sapphire.
Metric UnitsUS Customary Units
Material Properties
| Density, g/cm3 | 2.1 to 3.1 | |
| 4.0 |
| Dielectric Constant (Relative Permittivity) At 1 MHz | 6.2 | |
| 10 |
| Dielectric Strength (Breakdown Potential), kV/mm | 7.9 | |
| 9.9 |
| Flexural Strength, MPa | 40 to 160 | |
| 1090 |
| Specific Heat Capacity, J/kg-K | 850 | |
| 760 |
| Thermal Conductivity, W/m-K | 1.7 to 3.5 | |
| 30 |
| Thermal Diffusivity, mm2/s | 0.94 to 1.3 | |
| 9.9 |
| Thermal Expansion, µm/m-K | 9.0 to 10 | |
| 5.3 |