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Glucydur is an alloy of copper and 2-3% beryllium. This alloy has particularly good mechanical properties. It is non-magnetic and non-oxidizing and at normal temperatures has only a very small expansion. Therefore, it is preferred for monometallic balance wheels used in watch movements.

The word is a combination of the French words glucinium and dur (French = hard).

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glucydur.txt · Last modified: 11.10.2021 17:14 (external edit)

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