C-820 Magnesia Ceramic vs. Optical Silicon
C-820 magnesia ceramic belongs to the oxide-based engineering ceramics classification, while optical silicon belongs to the non-glass optical 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 C-820 magnesia ceramic and the bottom bar is optical silicon.
Metric UnitsUS Customary Units
Material Properties
| Density, g/cm3 | 2.7 | |
| 2.3 |
| Dielectric Constant (Relative Permittivity) At 1 MHz | 9.6 | |
| 12 |
| Elastic (Young's, Tensile) Modulus, GPa | 100 | |
| 150 |
| Flexural Strength, MPa | 53 | |
| 300 |
| Specific Heat Capacity, J/kg-K | 950 | |
| 700 |
| Stiffness to Weight: Axial, points | 21 | |
| 35 |
| Stiffness to Weight: Bending, points | 58 | |
| 75 |
| Thermal Conductivity, W/m-K | 8.0 | |
| 150 |
| Thermal Diffusivity, mm2/s | 3.1 | |
| 93 |
| Thermal Expansion, µm/m-K | 11 | |
| 3.0 |