Hafnium

Hafnium: physical properties

Temperatures

• Melting point: 2506 [or 2233 °C (4051 °F)] K
• Boiling point: 4876 [or 4603 °C (8317 °F)] K (liquid range: 2370  K
• Critical temperature: no data  K
• Superconduction temperature: 0.128 [or -273.022 °C (-459.44 °F)] K

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Expansion and conduction properties

• Thermal conductivity: 23  W m^-1 K^-1
• Coefficient of linear thermal expansion: 5.9  x 10^-6 K^-1

Bulk properties

• Density of solid: 13310  kg m^-3
• Molar volume: 13.44  cm³
• Velocity of sound: 3010  m s^-1

Elastic properties

• Youngs modulus: 78  GPa
• Rigidity modulus: 30  GPa
• Bulk modulus: 110  GPa
• Poissons ratio: 0.37  (no units)

Hardnesses

• Mineral hardness: 5.5  (no units)
• Brinell hardness: 1700  MN m^-2
• Vickers hardness: 1760  MN m^-2

Electrical properties

• Electrical resistivity: 30  10^-8 Ω m; or mΩ cm

Optical properties

The image above is a virtual representation of hafnium 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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Hafnium	Hafnium
Hafnium	Hafnium
Afnio	Hafnio
Hafnium	Háfnio