Fused Quartz

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Fused Quartz
Categories:	Ceramic; Oxide; Silicon Oxide
Material Notes:	Silicon dioxide. Information below is typical for commercially available fused quartz used for tubing and lighting applications. A wide variation of properties is possible between specific grades.
Key Words:	SiO2, Silica, Silicon Dioxide
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Physical Properties	Metric	English	Comments

Density	2.20 g/cc	0.0795 lb/in³
Water Absorption	0.00 %	0.00 %

Mechanical Properties	Metric	English	Comments
Hardness, Knoop	820	820
Hardness, Mohs	5.5 - 7.0	5.5 - 7.0
Modulus of Elasticity	70.0 - 78.0 GPa	10200 - 11300 ksi
Compressive Strength	1100 MPa	160000 psi
Poissons Ratio	0.17	0.17
Shear Modulus	31.0 GPa	4500 ksi

Electrical Properties	Metric	English	Comments
Electrical Resistivity	1.00e+14 - 1.00e+22 ohm-cm	1.00e+14 - 1.00e+22 ohm-cm
Dielectric Constant	3.7 - 6.0	3.7 - 6.0

Thermal Properties	Metric	English	Comments
CTE, linear	0.400 µm/m-°C @Temperature 20.0 °C	0.222 µin/in-°F @Temperature 68.0 °F
	0.450 µm/m-°C @Temperature 1000 °C	0.250 µin/in-°F @Temperature 1830 °F
	0.600 µm/m-°C @Temperature 500 °C	0.333 µin/in-°F @Temperature 932 °F
	0.700 µm/m-°C @Temperature 250 °C	0.389 µin/in-°F @Temperature 482 °F
Specific Heat Capacity	0.700 J/g-°C	0.167 BTU/lb-°F
	0.670 - 0.750 J/g-°C	0.160 - 0.179 BTU/lb-°F
Thermal Conductivity	1.40 - 2.00 W/m-K	9.72 - 13.9 BTU-in/hr-ft²-°F
Softening Point	1580 - 1730 °C	2880 - 3150 °F
Annealing Point	1100 - 1215 °C	2010 - 2219 °F
Strain Point	990 - 1120 °C	1810 - 2050 °F

Optical Properties	Metric	English	Comments
Refractive Index	1.46	1.46
Transmission, Visible	>= 90 %	>= 90 %

Descriptive Properties
Color	Clear

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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BQUARTZ / 288

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