Prestige Metal Supplies carry a wide range of C14500/CW118C high quality oxygen-free machining rods and flats. Our Tellurium Copper includes the careful addition of Tellurium to the copper which significantly improves the machining speed to 80% and above when compared to leaded brass making it up to four times faster machining than pure copper. Standard copper in comparison usually only reaching around 20%.

Whilst increasing machining speeds for ease, the small addition of Tellurium also only reduces the thermal conductivity slightly to around 93-94% which makes it very suitable for close-tolerance high-voltage connectors. In addition to this, Tellurium Copper also has an easy solder ability and decent levels of corrosion resistance to make it an extremely useful material for a range of demanding uses.

 As with all of our products, Prestige Metal Supplies are committed to sourcing and selling our Tellurium Copper using only proven high-quality suppliers. Our current range of Tellurium Copper includes a selection of round bars from 3mm -100mm as well as flat bars from 4-8” wide. We also offer a number of bespoke copper options as part of our extended services. If you have a requirement outside of our standard stocked range, we will always look to offer you a bespoke solution to fit your needs.

To find out more about our range of Tellurium Copper, or for advice on the best products for you, please contact the team here at Prestige Metal Supplies.



What is Tellurium Copper?

Tellurium Copper is pure copper with the addition of Tellurium in order to increase machining speeds. Unlike other alloys, Tellurium Copper does not see a large reduction in thermal conductivity making it a fantastic oxygen-free machining copper for high-voltage connectors.

What is Tellurium Copper Used for?

Tellurium Copper is typical used for electrical components that require a high level of difficult machining. Some examples of uses of Tellurium Copper include:

  • Electrical switches for power semi-conductors
  • Transformer and circuit breaker terminals
  • Gas cutting nozzles
  • Contacts
  • Clamps
  • Electrical connector pins
  • Nuts & bolts