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At normal temperatures, the material K Monel is __________

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At normal temperatures, the material K Monel is __________

(a) magnetic

(b) active

(c) non-magnetic

(d) corrosion prone

The question was posed to me in a job interview.

This intriguing question comes from Properties of Nickel-2 topic in chapter Nickel Alloys of Aerospace Materials & Processes

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The correct answer is (c) non-magnetic

Easiest explanation: The non-ferrous alloy K Monel is non-magnetic in nature at normal temperatures. The magnetic permeability of K Monel is 1. It is the same as that of air. This is helpful when the metal has to be located near a compass.

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