Copper/Nickel Alloy Foil (Cu70/Ni30)

Copper/Nickel Alloy Foil (Cu70/Ni30) offers a synergistic blend of high corrosion resistance, mechanical strength, and thermal stability, making it ideal for applications where environmental durability and electrical performance are critical. Its solid-solution structure and uniform nickel distribution enhance resistance to stress corrosion cracking and ensure long service life in harsh conditions. Industries such as electronics, marine engineering, and energy storage rely on this foil for uses including precision resistor elements, lithium battery current collectors, and corrosion-resistant shielding materials. Specific applications include substrates for two-dimensional material growth like graphene, precision instrumentation grids, and conductive layers in multilayer electronic assemblies. In research, Cu70/Ni30 foil is a key platform for investigating advanced conductor behavior, optimizing electrochemical performance, and engineering high-stability thin-film systems. Its unique balance of strength, conductivity, and corrosion resistance secures its role as a critical material in both industrial and scientific innovation.

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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
Elongation at break( % )	<45
Tensile strength( MPa )	410-420

Electrical Properties

Element	Value
Electrical resistivity( µOhmcm )	37.4
Temperature coefficient( K⁻¹ )	-

Thermal Properties

Element	Value
Melting point( C )	1171
Specific heat( J K⁻¹ kg⁻¹ )	377@23°C
Thermal conductivity( W m⁻¹ K⁻¹ )	29.4
Coefficient of thermal expansion( x10⁻⁶ K⁻¹ )	16.2@20-300°C