Fused Silica vs. High-silica Glass
Both fused silica and high-silica glass are glass and glass-ceramics. There are 9 material properties with values for both materials. Properties with values for just one material (20, in this case) are not shown.
For each property being compared, the top bar is fused silica and the bottom bar is high-silica glass.
Metric UnitsUS Customary Units
Material Properties
| Density, g/cm3 | 2.2 | |
| 2.4 |
| Dielectric Strength (Breakdown Potential), kV/mm | 30 | |
| 34 |
| Elastic (Young's, Tensile) Modulus, GPa | 73 | |
| 78 |
| Electrical Dissipation At 1 MHz | 0.00011 | |
| 0.00044 to 0.00088 |
| Electrical Resistivity Order of Magnitude, 10x Ω-m | 14 | |
| 12 |
| Flexural Strength, MPa | 67 | |
| 34 |
| Stiffness to Weight: Axial, points | 18 | |
| 19 |
| Stiffness to Weight: Bending, points | 63 | |
| 61 |
| Thermal Expansion, µm/m-K | 0.5 | |
| 0.6 to 0.75 |