Rose's metal

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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. Its melting point is between 94 °C (201 °F) and 98 °C (208 °F). The alloy does not contract on cooling.


Rose's metal is typically used as a solder. It was used to secure cast iron railings and balusters in pockets in stone bases and steps. Its other uses are similar to Wood's metal. Rose's metal can also be used for bending of tubes (when the tube is filled with molten metal, solidified, bent, and then the metal is remelted and poured out), and as a heat transfer medium in constant temperature baths.[1] The hot baths with Rose's and Wood's metals are usually not in routine use and are employed for temperatures above 220 °C.[2]


It was discovered by the German chemist Valentin Rose the Elder, the grandfather of Heinrich Rose.

See also[edit]