Fused Quartz - Typical Properties of Clear Fused Silica

Typical Properties of Clear Fused Silica

  • Density: 2.203 g/cm3
  • Hardness: 5.3–6.5 (Mohs scale), 8.8 GPa
  • Tensile strength: 48.3 MPa
  • Compressive strength: >1.1 GPa
  • Bulk modulus: ~37 GPa
  • Rigidity modulus: 31 GPa
  • Young's modulus: 71.7 GPa
  • Poisson's ratio: 0.17
  • Lame elastic constants: λ=15.87 GPa, μ=31.26 GPa
  • Coefficient of thermal expansion: 5.5×10−7/°C (average from 20 °C to 320 °C)
  • Thermal conductivity: 1.3 W/(m·K)
  • Specific heat capacity: 45.3 J/(mol·K)
  • Softening point: c. 1665 °C
  • Annealing point: c. 1140 °C
  • Strain point: 1070 °C
  • Electrical resistivity: >1018 Ω·m
  • Dielectric constant: 3.75 at 20 °C 1 MHz
  • Dielectric loss factor: less than 0.0004 at 20 °C 1 MHz
  • Index of refraction: at 587.6 nm (nd): 1.4585
  • Change of refractive index with temperature (0 to 700 °C): 1.28×10−5/°C (between 20 and 30 °C)
  • Strain-optic coefficients: p11=0.113, p12=0.252.
  • Hamaker constant: A=6.5×10-20 J.
  • Dielectric strength: 250–400 kV/cm at 20 °C

Read more about this topic:  Fused Quartz

Famous quotes containing the words typical, properties, clear and/or fused:

    It is indeed typical that you Earth people refuse to believe in the superiority of any world but your own. Children looking into a magnifying glass, imagining the image you see is the image of your true size.
    —Franklin Coen. Joseph Newman. The Monitor (Douglas Spencer)

    A drop of water has the properties of the sea, but cannot exhibit a storm. There is beauty of a concert, as well as of a flute; strength of a host, as well as of a hero.
    Ralph Waldo Emerson (1803–1882)

    The meaning of today will not be clear until tomorrow.
    Mason Cooley (b. 1927)

    Male supremacy is fused into the language, so that every sentence both heralds and affirms it.
    Andrea Dworkin (b. 1946)