C-820 Magnesia Ceramic vs. Fused Silica
C-820 magnesia ceramic belongs to the oxide-based engineering ceramics classification, while fused silica belongs to the glass and glass-ceramics. There are 11 material properties with values for both materials. Properties with values for just one material (16, in this case) are not shown.
For each property being compared, the top bar is C-820 magnesia ceramic and the bottom bar is fused silica.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 100 | |
| 73 |
| Flexural Strength, MPa | 53 | |
| 67 |
Thermal Properties
| Specific Heat Capacity, J/kg-K | 950 | |
| 720 |
| Thermal Conductivity, W/m-K | 8.0 | |
| 1.4 |
| Thermal Expansion, µm/m-K | 11 | |
| 0.5 |
Electrical Properties
| Dielectric Constant (Relative Permittivity) At 1 MHz | 9.6 | |
| 3.8 |
| Electrical Dissipation At 1 MHz | 0.00030 | |
| 0.00011 |
Otherwise Unclassified Properties
| Density, g/cm3 | 2.7 | |
| 2.2 |
Common Calculations
| Stiffness to Weight: Axial, points | 21 | |
| 18 |
| Stiffness to Weight: Bending, points | 58 | |
| 63 |
| Thermal Diffusivity, mm2/s | 3.1 | |
| 0.85 |