What is the composition of copper-nickel alloy tubing used on surface ships?

The composition of copper-nickel alloy tubing commonly used on surface ships is typically 90% copper and 10% nickel. This combination is specifically chosen for its excellent resistance to corrosion, particularly in marine environments where seawater can be highly corrosive. The high copper content provides excellent thermal and electrical conductivity, while the addition of nickel enhances the strength and resistance to stress corrosion cracking. This makes the 90/10 copper-nickel alloy well-suited for applications like seawater piping systems, heat exchangers, and other critical components that require durability and reliability in harsh conditions.