Suprasil® CG Glass

Glass Type: Fused Silica


Suprasil® CG is a high purity synthetic fused silica material manufactured by flame hydrolysis. It combines excellent physical properties with very good optical characteristics and excellent transmission from the deep UV to the near IR.

Thermal PropertiesMechanical Properties
Thermal Coefficient of Expansion0 ± 0.5 x 10-6/KDensity2.20 g/cm3
Annealing Point1120°CShear Modulus36.8 GPa
Softening Point1600 °CKnoop Hardness5600 - 6200
Tensile Strength50 N/mm2Poisson's Ratio0.17@ 25°C
Chemical PropertiesElectrical Properties
Hydrolytic ResistanceN/ADielectric Constant7 8MHz, 25° C
Acid ResistanceN/AResistivity=l,00e+8 Ω-cm @400°C
Alkali ResistanceN/ADielectric Strength3.7 /20°C
Optical Properties
Refractive IndexBl: 4,73115591 . 10-1