Stannol flowtin tc and tsc lead free solder wire stannol 810204 flowtin ts is a lead free alloy developed to replace eutectic or close to eutectic tin lead silver alloys flowtin ts is based on a tin silver copper alloy with micro alloy additives switching to lead free with flowtin ts requires no adjustment of temperature profiles for hand soldering this means a longer lifetime for solder tips the properties of the resulting solder joints are in every respect comparable to or better than