... :Soldering in TV set, radio or normal home appliancesRepair of normal home appliances and audio facilitiesSoldering in radio transponder, ... ). [3] It is commonly used in electronics, plumbing, and assembly of sheet metal parts. Manual soldering uses a soldering iron or ... , copper, silver, bismuth, indium, zinc, antimony, and traces of other metals. Most lead-free replacements for conventional Sn60/Pb40 ...