Rhenium - 75Re: physical properties
Density properties
Density of solid: 21020 kg m‑3
Molar volume: 8.86 cm3
Elastic properties
Young's modulus: 463 GPa
Rigidity modulus: 178 GPa
Bulk modulus: 370 GPa
Poisson's ratio: 0.30 (no units)
Hardnesses
Mineral hardness: 7.0 (no units)
Brinell hardness: 1320 MN m-2
Vickers hardness: 2450 MN m-2


Electrical properties
Electrical resistivity: 18 × 10‑8 Ω m; or mΩ cm
Heat and conduction
Thermal conductivity: 48 W m‑1 K‑1
Coefficient of linear thermal expansion: 6.2 × 10‑6 K‑1
Optical properties
The image above is a virtual representation of rhenium metal calculated by Patrick Callet using the complex diectric function of the element only.
Reflectivity: (no data) %
Refractive index: (no data) (no units)
Acoustic properties
Velocity of sound: 4700 m s‑1