Tungsten/Copper Alloy Foil (W60/Cu40)

Tungsten Copper Alloy Foil (W60/Cu40) balances tungsten’s mechanical robustness with copper’s high conductivity, offering a material suitable for applications requiring strength, thermal control, and electrical transfer. With 60% tungsten, the foil provides strong wear resistance and arc erosion stability, while the 40% copper ensures effective conductivity and thermal management. Industries including aerospace, power electronics, and defense employ W60/Cu40 foils in high-current electrical contacts, thermal spreaders, and protective conductive barriers. Specific applications include EDM electrodes, welding electrodes, and heat-dissipating foils for aerospace sensors. In research, W60/Cu40 foils are studied for microstructural distribution of tungsten and copper phases, optimization of conductivity-strength balance, and stability under cyclic thermal and electrical loading. Their dual-function role in conduction and structural durability ensures continued value across aerospace, power, and defense applications.

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Tolerance

Properties

Reference & Citations

each

Tolerances

Foil

Thickness	<0.01mm	±25%
Thickness	0.01mm - 0.05mm	±25%
Thickness	>0.05mm	±10%

Material Properties for Alloys

Mechanical Properties

Element	Value
Hardness - Rockwell	82
Hardness - Vickers( kgf mm⁻² )	140
Tensile strength( MPa )	460

Electrical Properties

Element	Value
Electrical resistivity( µOhmcm )	3.7
Temperature coefficient( K⁻¹ )	-

Physical Properties

Element	Value
Density( gcm⁻³ )	13

Thermal Properties

Element	Value
Specific heat( J K⁻¹ kg⁻¹ )	240@25°C
Thermal conductivity( W m⁻¹ K⁻¹ )	228@23°C
Coefficient of thermal expansion( x10⁻⁶ K⁻¹ )	11.7@20°C