Rose metal, also known as Rose’s Metal, is a fusible alloy. It consists of bismuth, lead and tin. A fusible alloy is a metal that has a very low melting point and its uses include anchoring, mold applications and fusible links. It is mainly used as a solder. Alloys with low melting points are used in the process of soldering so that they can join the work pieces in use by melting. As they melt in a very low temperature, the work pieces remain unaffected Roses metal can also be used as a malleable filling to prevent tubes and pipes from crimping when bent. In this process, the tube to be bent is first filled with melted Rose metal. Next, the metal must be solidified, but remains malleable. This allows the tube or pipe to be bent and reworked without crimping. When the tube attains the desired shape, the Rose metal is re-melted and poured out of the tube. In a constant temperature bath, Roses metal is used as a heat transfer medium. It is usually not used for the process at lower temperatures. It is employed only in hot bath with temperatures above 220°C. It was also used to secure iron railings and balusters in stone steps and stone bases. Rose metal can also be used as a low temperature casting metal. This metal is also used as a valve element in automatic fire sprinklers. The valve, having a low melting point, melts in fire and provides water to stop the fire from spreading.
- Tube bending
- Fire sprinklers