Rose's metal

Rose's metal, Rose metal or Rose's alloy is a fusible alloy with a low melting point.

Rose's metal consists of 50% bismuth, 25–28% lead and 22–25% tin.

The alloy does not appreciably contract or expand on solidification, this characteristic being a function of its bismuth percentage, but does slightly contract on cooling.

[1] Rose's metal has several common uses: It was discovered by the German chemist Valentin Rose the Elder, the grandfather of Heinrich Rose.

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