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Background Information

Consisting of pure tungsten (W) powder suspended in a matrix of copper (Cu), these alloys are readily machinable and known for good thermal and electrical conductivity, low thermal expansion, being non-magnetic, good performance under vacuum, and resistance to erosion from arcing. Thus, they are often used as electrical contacts, particularly in high voltage applications. Most sizes and shapes can be supplied with short lead times. We can also manufacture parts from these materials to your specifications.

Tungsten Copper Alloy Advantages

  • High arc resistance combined with good electrical conductivity
  • High thermal conductivity
  • Low thermal expansion

Tungsten Copper Alloy Applications

  • Electrodes for resistance welding
  • Arc contacts and vacuum contacts in high/medium voltage breakers or vacuum interrupters
  • Electrodes in electric spark erosion (EDM) cutting machines
  • Heat sinks and heat spreaders for passive cooling of electronic devices
  • Electronic packaging materials
  • Radio base station components
  • IGBT modules for hybrid-electric (HEV) and full-electric (EV) vehicles

Need Custom Raw Material Sizes or Machined Parts?

We can custom make any parts from your dimensioned print or raw materials like rods, disks, sheets, plates, bars, or wire.

Have Technical Questions?

We’re available to answer any questions regarding our products or services and provide quotes for custom projects. We look forward to hearing from you.

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Tungsten Copper Alloy Resources

Fabricating Tungsten Alloy

Refractory Metal Supply and Fabrication

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Tungsten Copper Alloy Properties

CompositionDensity gr/ccIACS %Hardness HB Kgf/mm2Bend Strength MPa
W55 Cu4512.3049125-
W60 Cu4012.7547140-
W65 Cu3513.3044155-
W68 Cu3213.9343165-
W70 Cu3014.1842175667
W75 Cu2514.5038195706
W80 Cu2015.1534220736
W85 Cu1515.9030240765
W90 Cu1016.7527260804

Tungsten Copper Alloy Products

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We’re Looking forward to hearing from you

Midwest Tungsten Service can cut or custom make any rod to your specifications. We also offer custom alloys. Please contact to inquire about custom or out-of-stock sizes.

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