Quartz
lenses, windows, mirrors, filters and prisms
Quartz has a high optical transparency for a wide range of wavelengths such as UV and infrared. It has a greater optical transparency in shorter wavelength. Quartz also has a high level of purity making it an excellent material for semiconductor processing and liquid crystal manufacturing. It has excellent heat resistance properties, and also excellent thermal shock resistance from low-thermal expansion. It is highly stable as chemical and has excellent chemical resistance. Quartz offers outstanding electrical properties and a crystal clear appearance. It is used UV-transparent quartz glass optics, UV measuring instruments, industrial glass components and in medical applications.
| Transmission Range | 0.15 – 4.5 microns |
| Crystal Structure | Rock Salt |
| Cleavage Plane | 100 |
| Colour | colourless |
| Density | 2.648 at 25 °C |
| Melting Point (°) | 1470 |
| Reflection Loss | 8.2% (2µ) for 2 surfaces |
| Solubility index | insoluble |
| Hardness (Knoop) | 741.0 |
| Thermal Conductivity (cal/cm sec°C) | 0.0255 |
| Thermal Expansion coefficient (/°C) | 7.97 x 10-6 (parallel to C axis) 13.37 x 10-6 (vertical to C axis) |