... 1) It can applied in radio, communication, meters, instruments and copper, tin and irons and etc.2) Residue is easy to remove by hot ... °F). [3] It is commonly used in electronics, plumbing, and assembly of sheet metal parts. Manual soldering uses a soldering ... use may contain tin, copper, silver, bismuth, indium, zinc, antimony, and traces of other metals. Most lead-free replacements for conventional ...