Precious Metal Balls for Electrical Contacts and Fluid Control
REDHILL supplies precious metal balls in gold and platinum–iridium alloys. These materials combine high density with strong corrosion resistance. As a result, they suit selected electrical contacts, instruments and fluid control parts.
Gold Balls
Gold combines good electrical conductivity with strong resistance to oxidation and tarnishing in normal atmospheric conditions. As a result, it can help maintain reliable electrical contact surfaces.
However, pure gold is soft. Therefore, match the purity and material condition to the contact force and wear demands.
Platinum–Iridium Balls
Adding iridium increases platinum’s hardness and strength. In addition, platinum–iridium retains high density and strong corrosion resistance. The alloy ratio and processing condition affect its final properties. Therefore, specify the composition to match the application.
Applications of Precious Metal Balls
For example, common applications include:
- Electrical Contacts: Contact elements in selected switches, relays and signal interfaces.
- Valves and Dosing Systems: Check balls and sealing elements for compatible fluids.
- Precision Instruments: Contact and locating components in sensors and measuring devices.
- Medical and Laboratory Devices: Components with specified purity, surface finish and documentation.
Material Selection
Chemical compatibility depends on the fluid, concentration, temperature and alloy composition. Therefore, confirm the working conditions before selecting the material.
In addition, contact force, cleanliness and surface finish affect electrical contact resistance. For medical and high-purity projects, include cleaning and traceability requirements.
Custom Sizes and Specifications
- Material: Gold purity or platinum–iridium alloy ratio.
- Precision: Agreed diameter tolerance, roundness and surface finish.
- Custom Sizes: Diameters to suit the application.
Finally, send us your drawing or required ball diameter and quantity. We can then confirm material options, dimensions and lead time.
