China Jgs3 Optical IR Quartz Glass Windows for Optical Communication Fields, Find details about China Optical Glass, Jgs3 from Jgs3 Optical IR Quartz Glass Windows for Optical Communication Fields
Optical constants of Quartz glass
JGS-1 | JGS-2 | JGS-3 | |
---|---|---|---|
Spectral characteristics The average transmittance | 180-2500nm | 200-2500nm | 260-3500nm |
90% | 85% | 85% | |
Bubble class | 0 | 2 | 2 |
Birefringence | 1-2 | 1-2 | 1-2 |
Grain structure | 1 | 2 | 2 |
Fringe | 1-2 | 1-2 | 2 |
Uniformity | 1-2 | 2 | 2 |
Fluorescence | 1 | 2 | 2 |
Radiation Performance | Does not change color | Slight discoloration | Change color |
Physical properties of quartz glass
Mechanical properties | Standard value |
---|---|
Density | 2.2g/cm3 |
Compressive strength | 1100Mpa |
Bending strength | 67Mpa |
Tensile strength | 48Mpa |
Poisson's ratio μ | 0.14~0.17 |
Young's modulus E | 72000Mpa |
Rigidity modulus | 31000Mpa |
Mohs hardness | 5.5~6.5 |
Thermal properties | Standard value |
---|---|
Transformation point | 1280ºC |
Softening point | 1780ºC |
Annealing Point | 1250ºC |
Specific heat(20~350ºC) | 670J/kg.ºC |
Thermal conductivity(20ºC) | 1.4W/m.ºC |
Index of refraction | 1.4585 |
Coefficient of thermal expansion | 5.5×10-7cm/cm. ºC |
Thermal processing temperature | 1750~2050ºC |
Short-term use temperature | 1300ºC |
Long-term use temperature | 1100ºC |