Synthetic Sapphire vs. C-820 Magnesia Ceramic
Both synthetic sapphire and C-820 magnesia ceramic are oxide-based engineering ceramics. There are 10 material properties with values for both materials. Properties with values for just one material (17, in this case) are not shown.
For each property being compared, the top bar is synthetic sapphire and the bottom bar is C-820 magnesia ceramic.
Metric UnitsUS Customary Units
Material Properties
| Density, g/cm3 | 4.0 | |
| 2.7 |
| Dielectric Constant (Relative Permittivity) At 1 MHz | 10 | |
| 9.6 |
| Elastic (Young's, Tensile) Modulus, GPa | 450 | |
| 100 |
| Flexural Strength, MPa | 1090 | |
| 53 |
| Specific Heat Capacity, J/kg-K | 760 | |
| 950 |
| Stiffness to Weight: Axial, points | 63 | |
| 21 |
| Stiffness to Weight: Bending, points | 64 | |
| 58 |
| Thermal Conductivity, W/m-K | 30 | |
| 8.0 |
| Thermal Diffusivity, mm2/s | 9.9 | |
| 3.1 |
| Thermal Expansion, µm/m-K | 5.3 | |
| 11 |