Quartz glass has a very low coefficient of thermal expansion, high temperature resistance, excellent chemical stability, excellent electrical insulation, low and stable ultrasonic delay performance, the best UV-Vis spectral performance and visible and near infrared spectroscopy Performance, and has a higher than ordinary glass mechanical properties.
| Density | 2.5 g/cm3 |
| Hardness | 5.5-6.5 |
| Tensile strength | >90 MPa |
| Compressive strength | 40-90MPa |
| Bulk modulus | ~37 GPa |
| Rigidity modulus | 31 GPa |
| Poisson's ratio | 0.2 |
| Coefficient of thermal expansion | 5.8×10-7 cm/(cmK) |
| Thermal conductivity | 6.2 W/(mK) |
| Softening point | 500°C |
| Annealing point | 350°C |
| Strain point | 300°C |
| Electrical resistivity | >1018 Ωm |
| Dielectric constant | 3.75 at 20°C 1 MHz |