Barium - 56Ba: physical properties
Density properties
Density of solid: 3510 kg m‑3
Molar volume: 38.16 cm3
Elastic properties
Young's modulus: 13 GPa
Rigidity modulus: 4.9 GPa
Bulk modulus: 9.6 GPa
Poisson's ratio: (no data) (no units)
Hardnesses
Mineral hardness: 1.25 (no units)
Brinell hardness: (no data) MN m-2
Vickers hardness: (no data) MN m-2


Electrical properties
Electrical resistivity: 34 × 10‑8 Ω m; or mΩ cm
Heat and conduction
Thermal conductivity: 18 W m‑1 K‑1
Coefficient of linear thermal expansion: 20.6 × 10‑6 K‑1
Optical properties
Reflectivity: (no data) %
Refractive index: (no data) (no units)
Acoustic properties
Velocity of sound: 1620 m s‑1