Copper Nickel Pipes, commonly referred to as Cu-Ni pipes, are engineered from copper alloys containing nickel as the primary alloying element—typically in 90/10 (90% Cu, 10% Ni) or 70/30 (70% Cu, 30% Ni) compositions. These pipes are well-known for their exceptional corrosion resistance, particularly in marine environments, due to their excellent resistance to seawater, brine, and biofouling. Their anti-microbial properties and strength make them highly suitable for critical applications in shipbuilding, offshore platforms, and desalination plants.
Mechanically, Copper Nickel Pipes offer high tensile strength, excellent ductility, and moderate hardness. They maintain good mechanical stability even under high pressure and elevated temperatures, making them ideal for heat exchangers, condensers, and seawater cooling systems. These pipes exhibit superior resistance to hydrogen embrittlement and stress corrosion cracking, which is essential in fluctuating and aggressive marine service conditions. The addition of small quantities of iron and manganese improves overall strength and corrosion resistance.
