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Formula: Au
Form: Wire
Material: Gold
CAS Number: 7440-57-5
Commodity: Precious Metals
Purity: 99.99%
Temper: Hard

Gold Wire

Gold wire is a metallic conductor from Goodfellow's range of wires. Gold has very high electrical and thermal conductivity, and is extremely malleable and ductile. Gold wire is used in microelectronics to make connections between components and integrated circuits. With its unique properties, gold wire enables critical applications across electronics, medical devices, aerospace and other industries.
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Tolerances

Wire
Diameter ±10%
Length +5% / -1%

Material Properties for Precious Metals

Atomic Properties
Mechanical Properties
Electrical Properties
Physical Properties
Thermal Properties
Atomic Properties
Element Value
Atomic number 79
Crystal structure Face centred cubic
Electronic structure Xe 4f¹⁴ 5d¹⁰ 6s¹
Valences shown 1,3
Atomic weight( amu ) 196.9665
Thermal neutron absorption cross-section( Barns ) 98.8
Photo-electric work function( eV ) 4.8
Atomic radius - Goldschmidt( nm ) 0.144
Ionisation potential( No./eV ) 1/ 9.22
Ionisation potential( No./eV ) 2/ 20.5
Mechanical Properties
Element Value
Material condition Soft
Material condition Hard
Poisson's ratio 0.42
Poisson's ratio 0.42
Bulk modulus( GPa ) 171
Bulk modulus( GPa ) 171
Tensile modulus( GPa ) 78.5
Tensile modulus( GPa ) 78.5
Hardness - Vickers( kgf mm⁻² ) 20-30
Hardness - Vickers( kgf mm⁻² ) 60
Tensile strength( MPa ) 130
Tensile strength( MPa ) 220
Yield strength( MPa ) 205
Yield strength( MPa ) -
Electrical Properties
Element Value
Electrical resistivity( µOhmcm ) 2.20@20@20°C
Temperature coefficient( K⁻¹ ) 0.004@0-100°C
Thermal emf against Pt (cold 0C - hot 100C)( mV ) 0.74
Physical Properties
Element Value
Boiling point( C ) 3080
Density( gcm⁻³ ) 19.3@20°C
Thermal Properties
Element Value
Melting point( C ) 1064.4
Latent heat of evaporation( J g⁻¹ ) 1738
Latent heat of fusion( J g⁻¹ ) 64.9
Specific heat( J K⁻¹ kg⁻¹ ) 129@25°C
Thermal conductivity( W m⁻¹ K⁻¹ ) 318@0-100°C
Coefficient of thermal expansion( x10⁻⁶ K⁻¹ ) 14.1@0-100°C

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