Tungsten/Copper Alloy Straight Wire (W60/Cu40)

Tungsten Copper Alloy Straight Wire (W60/Cu40) combines tungsten’s high melting point, strength, and wear resistance with copper’s excellent electrical and thermal conductivity. The straight wire form offers dimensional stability and ease of integration into electrical discharge machining (EDM), high-voltage contacts, and resistance welding electrodes. Industries such as aerospace, electronics, and defense rely on W60/Cu40 wire for applications like arcing contacts, high-heat electrical leads, and precision EDM tooling. In research, it is used in plasma-facing components, specialized thermoelectric systems, and prototype high-power electrical assemblies. The alloy’s ability to maintain conductivity while resisting deformation under high thermal and mechanical stress makes it indispensable for demanding, high-energy applications.

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Tolerance

Properties

Reference & Citations

each

Tolerances

Wire

Diameter		±10%
Length		+5% / -1%

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