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cupro-nickels, there exists a range of different copper nickel alloys that possess different properties and hence are suited to a range of different applications. Some of the better known copper nickel alloys include:

· Copper with 10% nickel

· Copper with 30% nickel

· Copper with 25% nickel with 0.05-0.4% manganese

· Copper with 45% nickel (also known as constantan)

All copper nickel alloys consist of only one phase as the copper nickel binary system exhibits complete solid solubility.

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