- Materials
- Forms
- Reference Materials
-
Services
-
Services
-
-
Sectors
-
Supporting cutting edge research and development with advanced materials to your needs.
High performance materials for extreme conditions.
Innovative and lightweight materials with high mechanical properties and durability.
Materials used in chemical engineering from consumables to innovative solutions.
Advanced materials characterized by high electrical or insulation performance.
High quality materials for renewable energy.
Biocompatible and biodegradable materials to the highest standards.
High purity, biocompatible materials for high performance devices and applications.
High purity metals and alloys in various forms and crucibles suitable to your needs.
State of the art materials for the next generation of technologies.
High performance materials for extreme conditions.
Durable materials for corrosive environments.
Foils, disks or windows across a range of materials to facilitate your innovation.
Polymers, metal foils, and sustainable materials for your packaging needs.
Your requirements for unique products and attributes will be met across our 170,000+ product range and customization capabilities.
High-quality materials across branded products in various forms including rods, wires, and foils support space technology needs.
Highest quality materials to support your need for small-quantity specialist materials such as graphite and lithium compounds.
High purity materials to improve the reproducibility and reliability of your evaporation processes.
-
- Product Ranges
-
Resources
-
Find out our latest news.
Read our latest insights, and opinions.
Discover our Innovation Discovered podcasts on innovation, products, interesting topics, and more.
Find out how we've worked with our partners
Our latest updates on what we are doing, find out more.
Find out more about us and the great roles we have available for talented individuals. Find out more.
Take a look at our global distributors.
Explore our FAQ resource to help answer your key questions.
Gain a clearer picture of the language used in scientific study
-
- About Us
Gold Ultrafine Wire
Available Configurations
Properties common to all products in this list
| Diameter | Length | Other Variant |
|---|---|---|
| 0.0015mm to 0.009mm | 1m to 5m | Standard spooled wire |
Need custom configurations? Please contact us.
Key Features
Gold wire possesses a combination of material characteristics that make it particularly well suited for electronics, aerospace, biomedical, and scientific applications:
Exceptional Chemical Inertness
Gold is highly resistant to oxidation and corrosion, maintaining chemical stability in a wide range of environments, including strong acids, alkalis, and oxidising gases. Its stability under aggressive conditions ensures long-term reliability in corrosive or reactive systems.
High Melting Point (1,064 °C)
With a high melting point of 1,064 °C, gold remains stable in extreme thermal conditions. This makes it ideal for high-temperature wiring in furnace thermocouples, soldering fixtures, and aerospace wiring harnesses.
High Density (19.32 g/cm³)
Gold's high density provides excellent structural stability, helping it resist stretching or deformation over time — even in ultra-thin gauges. This makes it ideal for precision applications like inductors, resonators, RF coil windings, and MEMS devices.
High Electrical Conductivity (22.14 nΩ·m)
Gold wire's excellent electrical conductivity ensures low resistivity, making it ideal for high-reliability electrical contacts, microelectronic interconnects, and bonding wires in semiconductor packages. Its stable performance minimises voltage drop and ensures consistent signal transmission.
Optical Reflectivity & Infrared Performance
Gold wire's excellent infrared reflectivity and optical stability support its use in photonic circuits, plasmonic waveguides, and near-field optical probes. These properties are valuable in nanoscale light manipulation, biosensing platforms, and high-resolution spectroscopy techniques.
Exceptional Ductility & Tensile Strength
Gold wire offers exceptional ductility and can achieve greater tensile strength through work-hardening. It withstands repeated bending and coiling without cracking, enabling reliable spring contacts, wire bonding, and flexible circuit interconnects.
Biocompatibility
Naturally bioinert and non-toxic, gold wire is used in implantable medical leads, neuroelectrodes, biosensor wiring, and even dental applications. It does not trigger adverse immune responses, making it suitable for prolonged contact with biological tissues and fluids.
Industrial Applications
High-purity gold wire is employed across high-technology sectors for its high electrical performance, chemical inertness, mechanical resilience, and biocompatibility:
- ✦ Aerospace & Space Systems
- Used in spacecraft wiring harnesses, thermocouple leads, and precision coil windings. Gold wire's resistance to oxidation, radiation, and vacuum environments ensures reliable power and signal transmission over long durations.
- ✦ Electronics & Semiconductor Packaging
- The industry standard for integrated circuit wire bonding, gold wire forms ultra-fine interconnects between chips and their external contacts. Its oxide-free surface and excellent weldability help ensure reliable connection in microprocessors, memory chips, and other advanced electronic devices.
- ✦ RF & Microwave Engineering
- Used in precision inductors, transformers, and RF coil windings for satellite communications and defence electronics. Its excellent conductivity and resistance to oxidation ensure stable performance at high frequencies.
- ✦ Medical & Bioelectronic Devices
- Used in pacemaker wires, neurostimulation electrodes, and biosensors. Gold wire's bioinertness, flexibility under repeated movement, and consistent conductivity enable safe, long-term use inside the body without adverse tissue reactions.
- ✦ Scientific Instrumentation & Extreme Temperature Sensors
- Used in thermocouples for stable temperature measurement in ultra-cold environments. Also employed as bonding wire in MEMS sensors and actuators, where durability through temperature changes and resistance to environmental degradation are essential.
Synonyms
Material 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 |
| 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 ) | - |
| 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 |
| Element | Value |
|---|---|
| Boiling point( C ) | 3080 |
| Density( gcm⁻³ ) | 19.3@20°C |
| 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 |
Tolerances
| Diameter | ±10% | |
|---|---|---|
| Length | +5% / -1% |