Saint-Gobain Vitreosil® CFQ/TSC Optical Fused Quartz

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Saint-Gobain Vitreosil® CFQ/TSC Optical Fused Quartz
Categories:	Ceramic; Glass; Oxide; Silicon Oxide
Material Notes:	Vitreosil® CFQ/TSC grades are for use in less demanding applications including viewing windows for use in corrosive and high temperature environments and non-optical components such as spacers, insulators, etc. Vitreosil® optical fused quartz is made by flame fusion of naturally occurring quartz crystal in an oxy-hydrogen flame. Darkens slightly after prolonged UV exposure. Darkens after 10⁷ RAD X-ray or gamma ray exposure. General properties of Fused Silica and Fused quartz: A very wide transmission range from UV to near IR; extremely high optical transmission, excellent resistance to high power laser energy, excellent homogeneity, high temperature resistance, very low thermal expansion (resistance to thermal shock), and chemical inertness. General uses for optical quartz are microlithography optical systems, optical fibers, photomasks, laser optics, LCD displays, light guides, optical, IR , and UV windows, spectrophotometer cells, slides, optical pyrometers, and lamp bodies/components. Information provided by Saint-Gobain Quartz PLC.
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Physical Properties	Metric	English	Comments

Density	2.20 g/cc	0.0795 lb/in³

Mechanical Properties	Metric	English	Comments
Hardness, Knoop	820	820
Vickers Microhardness	1050 - 1350	1050 - 1350	kg/m² Vickers DPH
Hardness, Mohs	7.0	7.0
Tensile Strength, Ultimate	50.0 MPa	7250 psi
Modulus of Elasticity	72.0 GPa	10400 ksi
Flexural Strength	65.0 MPa	9430 psi	Bending Strength
Compressive Strength	1100 MPa	160000 psi
Poissons Ratio	0.16	0.16
Shear Modulus	31.0 GPa	4500 ksi
Shear Strength	30.0 MPa	4350 psi

Electrical Properties	Metric	English	Comments
Electrical Resistivity	6.00e+10 ohm-cm @Temperature 800 °C	6.00e+10 ohm-cm @Temperature 1470 °F
Dielectric Constant	3.78 @Frequency 100 - 2.50e+10 Hz	3.78 @Frequency 100 - 2.50e+10 Hz
Dielectric Strength	37.0 kV/mm	940 kV/in
Dissipation Factor	0.00010 @Frequency 1e+6 Hz	0.00010 @Frequency 1e+6 Hz

Thermal Properties	Metric	English	Comments
CTE, linear	0.540 µm/m-°C @Temperature 0.000 - 1000 °C	0.300 µin/in-°F @Temperature 32.0 - 1830 °F	average
Specific Heat Capacity	0.750 J/g-°C	0.179 BTU/lb-°F
Thermal Conductivity	1.38 W/m-K	9.58 BTU-in/hr-ft²-°F
Maximum Service Temperature, Air	1050 °C	1920 °F	Normal Conditions
	1350 °C	2460 °F	Extended periods if cycles remain above 300°C
	1350 °C	2460 °F
	1650 °C	3000 °F	Quick Immersion
Softening Point	1730 °C	3150 °F	Varies with thermal history
Annealing Point	1200 °C	2190 °F	Varies with thermal history
Strain Point	1080 °C	1980 °F	Varies with thermal history

Optical Properties	Metric	English	Comments
Refractive Index	1.457 @Wavelength 632.8 nm	1.457 @Wavelength 632.8 nm	n_He-Ne; Temperature Coefficient = 10.0 ppm/K
	1.4667 @Wavelength 435.83 nm	1.4667 @Wavelength 435.83 nm	n_g; Temperature Coefficient = 10.6 ppm/K
Transmission, Visible	92 %	92 %	Including Fresnel reflection for 10 mm pathlength
IR Transmittance	92 % @Wavelength <=2200 nm, Thickness 10.0 mm	92 % @Wavelength <=2200 nm, Thickness 0.394 in	Including Fresnel reflection for 10 mm path length.
UV Transmittance	90 % @Thickness 10.0 mm, Wavelength 270 nm	90 % @Thickness 0.394 in, Wavelength 270 nm

Component Elements Properties	Metric	English	Comments
SiO2	>= 99.99 %	>= 99.99 %

Descriptive Properties
Fluorescence	Blue/Violet		254 nm excitation
Granularity	Faint

Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistent format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to MatWeb's terms of use regarding this information. Click here to view all the property values for this datasheet as they were originally entered into MatWeb.

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CSTGQZ07 / 2225

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