Cupro nickel tubes is highly resistant to corrosion in seawater; hence, it is widely used for piping, heat exchangers and condensers in seawater systems, as well as marine hardware.Cupro-Nickel Tubes (90%10%) : This alloy also has very high erosion and corrosion resistance. It has very high weldability, easy for installation and high anti-fouling properties against sea microorganisms. Relatively high iron content provides better impingement attack resistance. The alloy is unique to stress corrosion cracking.