Crystalline (Alpha) Quartz Optical Material

Alpha quartz is a non-glass optical ceramic material.

Material Properties

Density2.7 g/cm3 (170 lb/ft3)

Elastic (Young's, Tensile) Modulus91 GPa (13 x 106 psi)

Knoop Hardness740

Light Transmission Range0.13 to 3.4 µm

Melting Onset (Solidus)1590 °C (2890 °F)

Poisson's Ratio0.13

Refractive Index1.6

Shear Modulus31 GPa (4.5 x 106 psi)

Specific Heat Capacity720 J/kg-K

Thermal Conductivity8.5 W/m-K

Thermal Diffusivity4.4 m2/s

Thermal Expansion9.5 µm/m-K

The length of each bar compares the given value to the highest value in the database.

Further Reading

Handbook of Optical Constants of Solids, Edward D. Palik (editor), 1998

Handbook of Optical Materials, Marvin J. Weber, 2003