Are cupronickels magnetic?

Cupronickels have a very low magnetic permeability <1.01.

What is Magnetic Permeability?

Magnetic permeability indicates the ease with which an external magnetic field can create a magnetic force of attraction in the metal. By this measure, cupronickels such as Hiduron 130 (DTD900/4805, 2.1504) are considered non-magnetic, which is a useful property for applications in valves, sensors and connectors.

Cupronickels From Langley Alloys

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