Xiaogan, Hubei, China
Business Type: Manufacturer/Factory, Trading Company
Fused quartz or fused silica is glass consisting of silica in amorphous (non-crystalline) form. It differs from traditional glasses in containing no other ingredients, which are typically added to glass to lower the melt temperature. Fused silica, therefore, has high working and melting temperatures. The optical and thermal properties of fused quartz are superior to those of other types of glass due to its purity. For these reasons, it finds use in situations such as semiconductor fabrication and laboratory equipment. It has betterultraviolet transmission than most other glasses, and so is used to make lenses and other optics for the ultraviolet spectrum. Its low coefficient of thermal expansion also makes it a useful material for precision mirror substrates.
Product Parameters
Property | Typical Values | Property | Typical Values |
Density | 2.2x103 kg/m3 | Electrical Resistivity | 7x107 ohm cm (350°C) |
Hardness | 5.5 - 6.5 Mohs' Scale 570 | Index of Refraction | 1.4585 |
Design Tensile Strength | 4.8x107 Pa (N/m2) | Strength | 5x107 V/m |
Bulk Modulus | 3.7x1010 Pa (5.3x106 psi) | transmittance rate | 85% |
Rigidity Modulus | 3.1x1010 Pa (4.5x106 psi) | Sonic Attenuation | Less than 11 db/m MHz |
Softening Point | 1683°C | Helium | 210x10-10 |
Annealing Point | 1215°C | Hydrogen | 21x10-10 |
Strain Point | 1120 °C | Deuterium | 17x10-10 |