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GE 124 Fused Quartz Glass

Fused Quartz Optical Properties
Thermal Properties
Thermal Coefficient of Expansion (0/300°C): 5.5 X 10 -7/°C
Annealing Point 1213.83°C / 2216.9 °F
Softening Point 1683°C / 3061 °F
Strain Point 1122°C / 2051.6 °F

Mechanical Properties
Density 2.21 g/cm3
Knoop Hardness >600 Kg/mm2
Young's Modulus 10.5 X 106 PSI (70 Gpa)
Poisson's Ratio .17

Optical Properties
Refractive Index 1.4585

Electrical Properties
Dielectric Constant 3.75 @ 20°C, 1 MHz
Resistivity 7 X 107 ohm * cm (350°C)