Germanium

Germanium: physical properties

Temperatures

• Melting point: 1211.4 [or 938.3 °C (1720.9 °F)] K
• Boiling point: 3093 [or 2820 °C (5108 °F)] K (liquid range: 1881.6  K
• Critical temperature: no data  K
• Superconduction temperature: no data  K

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Expansion and conduction properties

• Thermal conductivity: 60  W m^-1 K^-1
• Coefficient of linear thermal expansion: 6  x 10^-6 K^-1

Bulk properties

• Density of solid: 5323  kg m^-3
• Molar volume: 13.63  cm³
• Velocity of sound: 5400  m s^-1

Elastic properties

• Youngs modulus: no data  GPa
• Rigidity modulus: no data  GPa
• Bulk modulus: no data  GPa
• Poissons ratio: no data  (no units)

Hardnesses

• Mineral hardness: 6.0  (no units)
• Brinell hardness: no data  MN m^-2
• Vickers hardness: no data  MN m^-2

Electrical properties

• Electrical resistivity: about 50000 10^-8 Ω m; or mΩ cm

Optical properties

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

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

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Germanium	Germanium
Germanium	Germanium
Germanio	Germanio
Germanium	Germânio