Potassium: physical properties
Mechanical properties
Density properties
Density of solid: 856 kg m‑3
Molar volume: 45.94 cm3
Elastic properties
Young's modulus: (no data) GPa
Rigidity modulus: 1.3 GPa
Bulk modulus: 3.1 GPa
Poisson's ratio: (no data) (no units)
Hardnesses
Mineral hardness: 0.4 (no units)
Brinell hardness: 0.363 MN m-2
Vickers hardness: (no data) MN m-2
Electrical properties
Electrical resistivity: 7.5 × 10‑8 Ω m; or mΩ cm
Heat and conduction
Thermal conductivity: 100 W m‑1 K‑1
Coefficient of linear thermal expansion: (no data) × 10‑6 K‑1
Optical properties
Reflectivity: (no data) %
Refractive index: (no data) (no units)
Acoustic properties
Velocity of sound: 2000 m s‑1
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