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Tungsten/Copper Alloy Foil (Light Tight) (W 60/Cu40)

Formula: W 60/Cu40
Form: Foil (Light Tight)
Material: Tungsten/Copper Alloy
Commodity: Alloys
Light Tight: Light Tight
Tungsten/Copper Alloy Foil (Light Tight) (W 60/Cu40) is an alloy foil product within Goodfellow's diverse range of metal foils. This foil combines tungsten's hardness and thermal conductivity with copper's ductility and electrical conductivity. Applications of this light-tight foil include high-temperature furnace elements as well as electrodes and contacts requiring good thermal and electrical performance. With properties from both component metals, this alloy expands the utility of tungsten and copper foils.
Technical Data Sheet Safety Data Sheet Tolerance Properties
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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

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