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	Original Value	Comments

Density	2.20 g/cc
Water Absorption	0.00 %

Mechanical Properties	Original Value	Comments
Hardness, Knoop	820
Hardness, Mohs	5.5 - 7.0
Modulus of Elasticity	70.0 - 78.0 GPa
Compressive Strength	1100 MPa
Poissons Ratio	0.17
Shear Modulus	31.0 GPa

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

Thermal Properties	Original Value	Comments
CTE, linear	0.400 µm/m-°C @Temperature 20.0 °C
	0.450 µm/m-°C @Temperature 1000 °C
	0.600 µm/m-°C @Temperature 500 °C
	0.700 µm/m-°C @Temperature 250 °C
Specific Heat Capacity	0.700 J/g-°C
	0.670 - 0.750 J/g-°C
Thermal Conductivity	1.40 - 2.00 W/m-K
Softening Point	1580 - 1730 °C
Annealing Point	1100 - 1215 °C
Strain Point	990 - 1120 °C

Optical Properties	Original Value	Comments
Refractive Index	1.46
Transmission, Visible	>= 90 %

Descriptive Properties
Color	Clear

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BQUARTZ / 288

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