An alloy of nickel and aluminum used in thermocouples and electrical equipment to measure temperature.
From 'aluminum' plus 'mel' (possibly from Latin mel, honey, or a proprietary name component); a trademarked alloy developed for scientific instruments.
Alumel thermocouples are so reliable they're used in everything from industrial furnaces to spacecraft—the alloy is stable at extreme temperatures in ways pure metals simply cannot be.
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