Quartz Glass

Quartz glass optical windows are resistant against high temperature and

pressure and can be applied mainly in such fields as special light sources, optical instrument, optical electronics, military equipment, metallurgy, semi-conductor, and optical communications. Their experimental temperature is 1200 degrees and softening temperature 1730 degrees.

Quartz Glass

Detailed parameters are given as follows:

1.JGS1( Extreme UV optical quartz glass)

It is a high purity optical quartz glass made by oxyhydrogen flame melting. Its

satisfactory UV light transmission performance surpass all the other glass types in particular in the shortwave UV zone and can achieve a 90% transmission rate at the wavelength of 185nm. Hence it is an ideal choice for applications in thewavelength range of 185-2500nm.

2.JGS2 (UV optical quartz glass)

It is an optical quartz glass made by oxyhydrogen flame melting and is suggested for applications in the wavelength range of 220-2500nm.

3. JGS3 (Infrared quartz glass)

It has a good performance of infrared light transmission with a transmittance of over 85%. It is recommended for applications in the wavelength range of 260-3500nm.

Quartz glass characteristics

Table 1.

Mechanical PropertyReference Value
Compressive Strength1100Mpa
Bending Strength67Mpa
Tensile Strength48Mpa
Poisson’s Ratio0.14~0.17
Elastic Modulus72000Mpa
Shearing Modulus31000Mpa
Mohs Hardness5.5~6.5

Table 2.

Mechanical PropertyReference Value
Deformation Point1280 degree Celsius
Softening Point1780 degree Celsius
Annealing Point1250 degree Celsius
Specific Heat(20~350 degree Celsius)670J/kg. degree Celsius
Thermal Conductivity(20 degree Celsius)1.4W/m. degree Celsius
Refractive Index1.4585
Coefficient of thermal expansion5.5*10-7cm/cm.degree Celsius
Hot work temperature1750~2050 degree Celsius
The temperature for a short time1300 degree Celsius
The temperature for a long time1100 degree Celsius

Table 3.

Electrics PropertyReference Value
Resistivity7*107 omega .cm
Dielectric Strength250~400Kv/cm
Dielectric Constant3.7~3.9
Dielectric absorption coefficient<4*104
Dielectric loss coefficient<1*104


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