Cu ni alloy ASME SB 466 USN C70600 pipe and tube
The other alloys in the copper-nickel family have various variations in composition. A small amount of iron is essential for optimum performance.
Copper-nickel alloys are highly resistant to seawater environments. There are two common alloys with nominally 10% and 30% nickel. 10% nickel alloys are the most widely used in seawater treatment services. It has high electrical and thermal conductivity. It is resistant to ammonia in seawater and acid conditions. The copper-nickel seamless tube is made by cold-drawing process with higher dimensional accuracy. Copper material has high ductility.