Holmium - 67Ho: physical properties
Density properties
Density of solid: 8795 kg m‑3
Molar volume: 18.74 cm3
Elastic properties
Young's modulus: 65 GPa
Rigidity modulus: 26 GPa
Bulk modulus: 40 GPa
Poisson's ratio: 0.23 (no units)
Hardnesses
Mineral hardness: (no data) (no units)
Brinell hardness: 746 MN m-2
Vickers hardness: 481 MN m-2


Electrical properties
Electrical resistivity: 81.4 × 10‑8 Ω m; or mΩ cm
Heat and conduction
Thermal conductivity: 16 W m‑1 K‑1
Coefficient of linear thermal expansion: 11.2 × 10‑6 K‑1
Optical properties
Reflectivity: (no data) %
Refractive index: (no data) (no units)
Acoustic properties
Velocity of sound: 2760 m s‑1