Fused Silica vs. Zircon
Fused silica belongs to the glass and glass-ceramics classification, while zircon belongs to the oxide-based engineering ceramics. There are 10 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 zircon.
Metric UnitsUS Customary Units
Material Properties
| Density, g/cm3 | 2.2 | |
| 3.9 |
| Dielectric Constant (Relative Permittivity) At 1 MHz | 3.8 | |
| 8.8 |
| Dielectric Strength (Breakdown Potential), kV/mm | 30 | |
| 7.9 |
| Flexural Strength, MPa | 67 | |
| 450 |
| Maximum Temperature: Mechanical, °C | 1080 | |
| 1650 |
| Strength to Weight: Axial, points | 6.3 | |
| 21 |
| Strength to Weight: Bending, points | 14 | |
| 25 |
| Tensile Strength: Ultimate (UTS), MPa | 50 | |
| 290 |
| Thermal Conductivity, W/m-K | 1.4 | |
| 3.5 |
| Thermal Expansion, µm/m-K | 0.5 | |
| 5.0 |