Bismanol

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Bismanol is an alloy of Bismuth, Manganese and Iron developed by the US Naval Ordnance Laboratory. It was used to make permanent magnets for use in small electric motors.

Bismanol magnets have been replaced by Neodymium magnets which are both cheaper and superior in other ways, Samarium-Cobalt(Samarium-Cobalt magnets) magnets in more critical applications, and Alnico magnets.

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