Why is Copper alloyed with Nickel?

What’s the name of a copper and nickel alloy? There are many CuNi alloy that have different properties and can all be used for different purposes. Cupronickel contains 60-90% of copper. Constantan: 45% nickel. Monel: Minimum 52% nickel For what purpose is copper-nickel? Oceanographic Engineering White copper alloys, which are resistant to seawater corrosion and…