Cesium Bromide (CsBr) Optical Material

Cesium bromide is a non-glass optical ceramic material.

Material Properties

Density4.4 g/cm3 (270 lb/ft3)

Elastic (Young's, Tensile) Modulus16 GPa (2.3 x 106 psi)

Knoop Hardness20

Light Transmission Range0.25 to 40 µm

Melting Onset (Solidus)640 °C (1180 °F)

Poisson's Ratio0.28

Refractive Index1.6

Shear Modulus7.5 GPa (1.1 x 106 psi)

Specific Heat Capacity270 J/kg-K

Thermal Conductivity0.9 W/m-K

Thermal Diffusivity0.76 m2/s

Thermal Expansion48 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