Field's metal

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Field's metal is an approximately eutectic alloy that melts at around 62 ° C. It is named after Simon Quellen Field .

composition

Field's metal consists of indium , bismuth and tin in the following proportions:

  • 51% indium (In)
  • 32.5% bismuth (Bi)
  • 16.5% tin (Sn)

The mass ratio is therefore approximately 3: 2: 1. Taking into account the atomic masses, this results in a molar ratio of approximately 3.2: 1.1: 1.

use

Field's metal is suitable as a casting alloy , for example . Since it wets glass in its liquid state , it can also be used as a solder for glass.

In general, it can serve as a non-toxic substitute for the cadmium-containing Wood's metal , which melts at around 73-77 ° C. A disadvantage here is the price, which is quite high due to the indium content.

Web links

Field's Metal at scitoys.com (English)