Optical Silicon vs. Zircon
Optical silicon belongs to the non-glass optical ceramics classification, while zircon belongs to the oxide-based engineering ceramics. There are 9 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 optical silicon and the bottom bar is zircon.
Metric UnitsUS Customary Units
Material Properties
| Density, g/cm3 | 2.3 | |
| 3.9 |
| Dielectric Constant (Relative Permittivity) At 1 MHz | 12 | |
| 8.8 |
| Flexural Strength, MPa | 300 | |
| 450 |
| Maximum Temperature: Mechanical, °C | 1350 | |
| 1650 |
| Strength to Weight: Axial, points | 13 | |
| 21 |
| Strength to Weight: Bending, points | 22 | |
| 25 |
| Tensile Strength: Ultimate (UTS), MPa | 110 | |
| 290 |
| Thermal Conductivity, W/m-K | 150 | |
| 3.5 |
| Thermal Expansion, µm/m-K | 3.0 | |
| 5.0 |