Copper/Nickel Alloy Coil (Cu70/Ni30)

Copper/Nickel Alloy Coil (Cu70/Ni30) combines excellent corrosion resistance, particularly in marine and saline environments, with stable mechanical strength and good thermal conductivity. Its solid-solution microstructure ensures uniformity in mechanical properties and high resistance to stress corrosion cracking, making it suitable for long-term service in aggressive environments. This alloy is widely used in shipbuilding, desalination plants, and chemical processing due to its ability to withstand seawater and corrosive media without significant degradation. Specific applications include heat exchanger tubing in offshore oil platforms, seawater piping systems in naval vessels, and condenser coils in coastal power stations. In research, Cu70/Ni30 coils are employed to study high-performance marine alloys, optimize heat exchanger designs, and develop new corrosion-resistant systems for renewable energy plants. Its balance of strength, conductivity, and corrosion resistance ensures it remains a vital material for advanced engineering solutions in both industry and academia.

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Tolerance

Properties

Reference & Citations

Health hazard/Hazardous to the ozone layer

Serious health hazard

each

Tolerances

Coil

Thickness	<0.01mm	±25%
Thickness	0.01mm - 0.05mm	±15%
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