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Gold Ultrafine Wire

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Properties common to all products in this list

Commodity: Precious Metals Material: Gold Form: Wire Composition: Au CAS Number: 7440-57-5 Purity: 99.99% Temper: As Drawn
Gold Ultrafine Wire, under 9 μm in diameter, combines exceptional electrical conductivity, biocompatibility, and resistance to corrosion, making it indispensable in precision microelectronic and biomedical systems. Its ultra-fine gauge allows for high-density interconnects in semiconductor packaging, where gold alloy wires incorporating nickel, platinum, or palladium are used in flip-chip and wire bonding. It also plays a critical role in optoelectronics and fiber-optic sensing due to its low signal attenuation. Recent advances demonstrate its utility in mode-locked lasers via nonlinear optical absorption and in plasmonic enhancement for organic photovoltaics. Ultrafine gold nanowires also enable next-gen antennas in flexible electronics and ultra-stable 1D conductors in nano-optoelectronic design. As device architectures shrink, Gold Ultrafine Wire continues to support breakthroughs in data transmission, photonics, and implantable devices where material purity, precision, and miniaturization are paramount.
Starting at $1,290.00 each
No Minimum order Approx. 2 weeks leadtime Free technical support *Free delivery worldwide

Material 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°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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Available Configurations

Properties common to all products in this list

Commodity: Precious Metals Material: Gold Form: Wire Composition: Au CAS Number: 7440-57-5 Purity: 99.99% Temper: As Drawn

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Tolerances

Wire
Diameter ±10%
Length +5% / -1%