Fused Silica Glass Material Properties
Fused Silica Glass (SiO2), has high chemical resistance, good thermal shock resistance, very strong in compression and the electrical insulation performance is good. With a low thermal expansion coefficient and high light transmittance it is a good selection for demanding ball lens applications in the ultraviolet, visible, and near infrared spectra.
Applications for precision balls include: lenses, fiber optics, bar code readers, medical devices, insulators, electronics, optical measurement
Fused Silica Glass
| PHYSICAL PROPERTIES | |
|---|---|
| chemical composition | SiO2 |
| specific density | 2.2 g/cm3 |
| MECHANICAL PROPERTIES | |
| Young’s modulus | 7280 kg/mm2 |
| Poisson’s ratio | 0.17 |
| Vickers hardness | 900~1030 kg/mm2 |
| THERMAL PROPERTIES | |
| thermal expansion coefficient | 5.5×10-7 cm/cm°C |
| thermal conductivity ratio (100°C) | 3.27×10-3 cal/cm • sec • °C |
| specific heat (26°C) | 0.176 cal/g • °C |
| annealing point | 1160°C |
| softening point | 1700°C |
| OPTICAL PROPERTIES | |
| birefringence (strain) | 10nm/cm and under |
