Mumetal definitions

Mumetal

An alloy of high magnetic permeability containing up to 78% nickel with iron, copper and manganese.
Found on https://www.encyclo.co.uk/local/20687

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Mumetal

an alloy containing nickel, iron, and copper, characterized by high magnetic permeability and low hysteresis losses.
Found on https://www.infoplease.com/dictionary/mumetal

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