Beryllium - ₄Be: physical properties

Density properties

• Density of solid: 1848 kg m^‑3
• Molar volume: 4.85 cm³

Elastic properties

• Young's modulus: 287 GPa
• Rigidity modulus: 132 GPa
• Bulk modulus: 130 GPa
• Poisson's ratio: 0.032 (no units)

Hardnesses

• Mineral hardness: 5.5 (no units)
• Brinell hardness: 600 MN m^-2
• Vickers hardness: 1670 MN m^-2

Electrical properties

• Electrical resistivity: 3.8 × 10^‑8 Ω m; or mΩ cm

Heat and conduction

• Thermal conductivity: 190 W m^‑1 K^‑1
• Coefficient of linear thermal expansion: 11.3 × 10^‑6 K^‑1

Optical properties

• Reflectivity: (no data) %
• Refractive index: (no data) (no units)

Acoustic properties

• Velocity of sound: 13000 m s^‑1