[Martin Thuo] at Iowa University used this property to make solder joints at room temperature using Field’s metal (a combination of bismuth, indium, and tin). The key is a process that coats the ...

[Robin] starts with a demonstration of just how far a little bismuth depresses the melting point of tin solder — to about 135°. That allows plenty of time to work, and freeing leads from pads ...

bismuth is non-toxic and poses minimal risk to the environment. This makes it an attractive alternative in applications where toxicity is a concern, such as in lead-free solder and non-toxic ...