Clear fused quartz glass is a unique material with an unrivalled combination of purity, high temperature resistance, thermal shock resistance, high electrical insulation, optical transparency and chemical inertness.
|Density||2.20 x 103||Kg/m3|
|Youngs Modulus||74 x 106||KN/m2|
|Rigidity Modulus||32 x 106||KN/m2|
|Compresive Strength||20 x 106||KN/m2|
|Tensile Strength||70 x 103||KN/m2|
|Shear Strength||70 x 103||KN/m2|
|Electrical Resistivity||2 x 1019 ohm cm at 20°C
2 x 106 ohm cm at 800°C
|Dielectric Strength||10KV/mm at 20°C
2.5KV/mm at 500°C
|Coefficient of Expansion||0.52 x 10-6 per °C|
|Continuous Operating Temp.||>1000°C|
|Useful Optical Range||Synthetic 180 - 2000nm
Natural 275 - 2000nm
|Refractive Index||nD (589 nm) - 1.458|
|Total Metallic Impurities||10ppm (Typical)|
Fused quartz does not react with acids with the exception of hydrofluoric and at high temperatures phosphoric. There is a slow reaction with caustic alkalies at normal temperatures. There is no reaction with water and steam at moderate temperatures and pressures.
More detailed information such as transmission curves and chemical impurity levels are available on request.