What elements compose solder?
Solder is typically composed of lead or tin. At a higher heat, brass or silver can be used. Solder is used for joining other metals together.
Lead and tin were once the metals of choice for solder. They offered high strength, were easy to work with and were stable. Recent legislation in most developed countries have are are about to restrict lead in solder. Solder now usestin, copper and silver with some other trace elements. Although it has removed the lead, it has a higher melting point and it is more difficult to use well.