Thulium: physical properties
Mechanical properties
Density properties
Density of solid: 9321 kg m‑3
Molar volume: 19.13 cm3
Elastic properties
Young's modulus: 74 GPa
Rigidity modulus: 31 GPa
Bulk modulus: 45 GPa
Poisson's ratio: 0.21 (no units)
Hardnesses
Mineral hardness: (no data) (no units)
Brinell hardness: 471 MN m-2
Vickers hardness: 520 MN m-2
Electrical properties
Electrical resistivity: 67.6 × 10‑8 Ω m; or mΩ cm
Heat and conduction
Thermal conductivity: 17 W m‑1 K‑1
Coefficient of linear thermal expansion: 13.3 × 10‑6 K‑1
Optical properties
Reflectivity: (no data) %
Refractive index: (no data) (no units)
Acoustic properties
Velocity of sound: (no data) m s‑1
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