Platinum - ₇₈Pt: physical properties

Density properties

• Density of solid: 21090 kg m^‑3
• Molar volume: 9.09 cm³

Elastic properties

• Young's modulus: 168 GPa
• Rigidity modulus: 61 GPa
• Bulk modulus: 230 GPa
• Poisson's ratio: 0.38 (no units)

Hardnesses

• Mineral hardness: 3.5 (no units)
• Brinell hardness: 392 MN m^-2
• Vickers hardness: 549 MN m^-2

Electrical properties

• Electrical resistivity: 10.6 × 10^‑8 Ω m; or mΩ cm

Heat and conduction

• Thermal conductivity: 72 W m^‑1 K^‑1
• Coefficient of linear thermal expansion: 8.8 × 10^‑6 K^‑1

Optical properties

The image above is a virtual representation of platinum metal calculated by Patrick Callet using the complex diectric function of the element only.

• Reflectivity: 73 %
• Refractive index: (no data) (no units)

Acoustic properties

• Velocity of sound: 2680 m s^‑1