Sodium: physical properties
Mechanical properties
Density properties
Density of solid: 968 kg m‑3
Molar volume: 23.78 cm3
Elastic properties
Young's modulus: 10 GPa
Rigidity modulus: 3.3 GPa
Bulk modulus: 6.3 GPa
Poisson's ratio: (no data) (no units)
Hardnesses
Mineral hardness: 0.5 (no units)
Brinell hardness: 0.69 MN m-2
Vickers hardness: (no data) MN m-2
Electrical properties
Electrical resistivity: 4.9 × 10‑8 Ω m; or mΩ cm
Heat and conduction
Thermal conductivity: 140 W m‑1 K‑1
Coefficient of linear thermal expansion: 71 × 10‑6 K‑1
Optical properties
Reflectivity: (no data) %
Refractive index: (no data) (no units)
Acoustic properties
Velocity of sound: 3200 m s‑1
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