... .suitable for low temperature soldering process 5.SGS approved solder alloy details :Soldering in TV set, radio or normal home ... solders in commercial use may contain tin, copper, silver, bismuth, indium, zinc, antimony, and traces of other metals. Most lead-free ... and low temperature for smaller, crowded connections. Next choose the alloy. Leaded solder ranges from 40 percent tin and 60 percent ...