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Gold Balls

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Properties common to all products in this list

Composition: Au Form: Ball/Sphere Material: Gold Commodity: Precious Metals Purity: 99.99% Diameter: 0.56mm
Gold Balls are precisely formed metallic spheres characterized by exceptional chemical stability, electrical conductivity, and malleability. Produced through controlled melting and surface tension-driven spheroidization, these nearly perfect spheres ensure uniformity critical for high-reliability interconnects. They are foundational in microelectronics, semiconductor bonding, and precision instrumentation, where gold’s inertness and excellent conductivity are essential. Gold balls are widely applied in flip-chip bonding, micro-optomechanical systems (MOEMS), and MEMS devices requiring conductive, corrosion-resistant interfaces. In particular, they enable secure electrical joins in ultrasonic and thermosonic wire bonding, offering performance in high-frequency and high-temperature environments. Their use has expanded into advanced packaging technologies, quantum dot anchoring, and fine-pitch bonding in photonic and biomedical devices. Gold Balls are a vital material in scientific and industrial R&D due to their role in miniaturized systems, durable interconnects, and reproducible conductive bonding—a core component in next-generation electronics and precision assembly techniques.
Starting at $680.00 each
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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

Composition: Au Form: Ball/Sphere Material: Gold Commodity: Precious Metals Purity: 99.99% Diameter: 0.56mm

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Tolerances

Ball/Sphere
Diameter Standard ±5%
Diameter Precision See Item