Cobalt

Cobalt: physical properties

Temperatures

• Melting point: 1768 [or 1495 °C (2723 °F)] K
• Boiling point: 3200 [or 2927 °C (5301 °F)] K (liquid range: 1432  K
• Critical temperature: no data  K
• Superconduction temperature: no data  K

• Animate the above image by quicktime movie
• Animate the above image by animated gif

Expansion and conduction properties

• Thermal conductivity: 100  W m^-1 K^-1
• Coefficient of linear thermal expansion: 13.0  x 10^-6 K^-1

Bulk properties

• Density of solid: 8900  kg m^-3
• Molar volume: 6.67  cm³
• Velocity of sound: 4720  m s^-1

Elastic properties

• Youngs modulus: 209  GPa
• Rigidity modulus: 75  GPa
• Bulk modulus: 180  GPa
• Poissons ratio: 0.31  (no units)

Hardnesses

• Mineral hardness: 5.0  (no units)
• Brinell hardness: 700  MN m^-2
• Vickers hardness: 1043  MN m^-2

Electrical properties

• Electrical resistivity: 6  10^-8 Ω m; or mΩ cm

Optical properties

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

• Reflectivity: 67  %
• Refractive index: no data  (no units)

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Cobalt	Cobalt
Cobalt	Kobalt
Cobalto	Cobalto
Kobolt	Cobalto