ROBUST
CUSTOM MATERIAL & COMPONENT

Tungsten Copper Bars for Industrial Electrical and Thermal Applications

Tungsten copper bars are high-performance conductive components for industrial applications.

They combine tungsten’s high melting point with copper’s electrical conductivity.

Manufactured via infiltration and powder metallurgy processes, ensuring density stability.

These bars are widely used in electrical contacts, switchgear and thermal systems.

They provide excellent arc resistance and long service life.

Suitable for demanding industrial environments.

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Product Description

Technical details, material information and manufacturing notes for this product.

Common Grades

GradeApplication
W70/Cu30Electrical systems
W80/Cu20High temperature parts

Product Forms

FormSize
Bar5–100 mm

Common Grades & Specifications

Buyers choose the grade based on conductivity vs heat resistance requirements.

GradeCopper %Tungsten %ASTM B702RWMA ClassApplication
W50/Cu5048–52%BalanceClass A—Light-duty electrical contacts
W60/Cu4038–42%BalanceClass B—General EDM electrodes
W70/Cu3028–32%BalanceClass CClass 10High-voltage switchgear
W75/Cu2523–27%BalanceClass DClass 11Heavy-duty EDM & welding
W80/Cu2018–22%BalanceClass EClass 12Heat sinks & aerospace nozzles
W90/Cu108–12%Balance——Specialized thermal mounting

Available Product Forms & Dimensions

Tungsten copper is not cast. It is produced in semi-finished forms for precision machining.

Product FormDiameter / ThicknessLength / SizeFinish
Round Rod1–100 mm100–1000 mmGround / Polished
Square / Hex Bar5–80 mm200–500 mmMachined
Plate / Sheet1–50 mm100×200 to 300×300 mmRolled / Ground
Foil / Strip0.05–0.5 mmCustomBright / Matte
Finished PartsPer drawingPer drawingCNC / EDM

Physical Properties

GradeDensity (g/cm³)Hardness (HB)Conductivity (% IACS)
W60/Cu40~12.7514047%
W70/Cu30~14.1817542%
W75/Cu25~14.5019538%
W80/Cu20~15.1522034%
W90/Cu10~16.7526027%
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Related Technical Resources

Material guides, application notes and manufacturing knowledge from ROBUST.

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