| Property* | Value |
|---|---|
| General | |
| Chemical Formula | SiO2 |
| Mechanical | |
| Density | 2.2 gm/cc |
| Hardness | 570 Knoop |
| Tensile Strength | 7 kpsi |
| Modulus of Elasticity | 10.5 x 106 psi |
| Flexural Strength | > 160 kpsi |
| Compressive Strength | 160 kpsi |
| Poisson's Ratio | 0.17 |
| Fracture Toughness | 1.2 MPa m½ |
| Electrical | |
| Dielectric Strength | 1270 ac V/mil |
| Dielectric Constant | 3.8 (@ 1 MHz) |
| Volume Resistivity | 7 x 109 ohm-cm |
| Thermal | |
| Coefficient of Thermal Expansion | 0.6 x 10-6/°C |
| Thermal Conductivity | 1.4 W/mK |
| Specific Heat | 0.16 cal/g °C |
| Maximum Working Temperature | 600-1000 °C |
| Optical | |
| Index of Refraction | 1.459 |
| Transmission Band | 0.2 - 3.5 Wavelength (microns) |
| All properties are at room temperature unless otherwise noted. Engineering data are representative, and are not intended as absolute nor warrantable. Manufacturer’s Data shown is blended from multiple sources and therefore illustrates the marketplace. | |
Wikipedia Reference for Fused Quartz / Silica
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