Rose's metal

Roses metal is an alloy of bismuth, lead and tin in the vicinity of the ternary eutectic. The melting point of about 94 ° C below the boiling point of water at atmospheric pressure. The alloy was designed by German pharmacists Valentin Rose found the Elder. It consists of approximately

  • Two parts by weight (50%) of bismuth (Bi)
  • One part by weight (25% ) Lead ( Pb), and
  • One part by weight (25%), tin ( Sn)

And has a density of 9.32 g / cm ³. In case of deviation from the stated weight ratios other values ​​for melting point and density result.

Roses metal is thus identical with D' Arcets metal. Also, it is similar to the melting already at 73 to 77 ° C. Wood's metal; however, is less toxic because it does not contain cadmium.

Use

Roses metal is used, for example, for monitoring the temperature and the heating and cooling liquid, but also used as a soft solder and fuses. Since 1 July 2006 the use of lead-containing solder alloys for new electrical and electronic equipment, only in limited cases in Germany, according to WEEE.

Under the name MCP96 it is used in radiation therapy to the creation of individual Abschirmblöcken. As molds thereby serve mostly styrodur plates.

It was also used to secure iron railings and balustrades in stone settings.

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