Fused Silica vs. C-820 Magnesia Ceramic
Fused silica belongs to the glass and glass-ceramics classification, while C-820 magnesia ceramic belongs to the oxide-based engineering 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 fused silica and the bottom bar is C-820 magnesia ceramic.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 73 | |
| 100 |
| Flexural Strength, MPa | 67 | |
| 53 |
Thermal Properties
| Specific Heat Capacity, J/kg-K | 720 | |
| 950 |
| Thermal Conductivity, W/m-K | 1.4 | |
| 8.0 |
| Thermal Expansion, µm/m-K | 0.5 | |
| 11 |
Electrical Properties
| Dielectric Constant (Relative Permittivity) At 1 MHz | 3.8 | |
| 9.6 |
| Electrical Dissipation At 1 MHz | 0.00011 | |
| 0.00030 |
Otherwise Unclassified Properties
| Density, g/cm3 | 2.2 | |
| 2.7 |
Common Calculations
| Stiffness to Weight: Axial, points | 18 | |
| 21 |
| Stiffness to Weight: Bending, points | 63 | |
| 58 |
| Thermal Diffusivity, mm2/s | 0.85 | |
| 3.1 |