Copper Alloy Copper Alloy CuNi 70/30

CuNi 70/30 is a copper-nickel alloy that contains 70% copper and 30% nickel. CuNi 70/30 is suitable for WAM® applications as it offers exceptional corrosion resistance, especially in marine and seawater environments. It is highly resistant to both general and localised forms of corrosion, making it well-suited for applications in the Marine industry, Offshore structures, and other environments where exposure to seawater is common. CuNi 70/30 exhibits excellent resistance to pitting, crevice corrosion, and stress corrosion cracking.

Apart from its corrosion resistance, CuNi 70/30 also possesses good mechanical properties. It has a higher tensile strength compared to CuNi 90/10, offering increased strength and durability for structural applications. CuNi 70/30 exhibits good ductility, allowing it to withstand mechanical stresses and deformations with minimal fracturing. ARCEMY®’s AMLSoft™ allows for specific parameters used in the WAM® process to be leveraged to improve material properties, including tensile strength and ductility.

CuNi 70/30 is also known for its excellent thermal conductivity, which makes it suitable for heat transfer applications such as heat exchangers. It also has good electrical conductivity, which is ideal for electrical and electronic applications requiring corrosion resistance and electrical conductivity.

Material Applications:

Increased conductivity


Resistant to corrosion

Good ductility

Suitable for:




Oil & Gas


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