JGS2 uv optical quartz glass windows
Product description:
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
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
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