... 4.use for handicraft and electricplating process pure tin soldering wire details :Soldering in TV set, ... The first number always represents the tin content; the higher the tin content, the lower the melting ... common lead-free solder contains 95 percent tin and 5 percent antimony but has a ... brazing.Lead-free solders in commercial use may contain tin, copper, silver, bismuth, indium, zinc, antimony, and ...