SRA Soldering Products WBCL/M32   Acid Flux Core Low Melt Solder, 50/32/18 .032-Inch, 1-Pound Spool Excellent quality general purpose solder Acid Core Solder has a highly active flux for common metals For use on highly oxidized and difficult to solder metals Residue is corrosive and must be washed with hot water. Works with Stainless Steel Melts at 293DegreeF.(145DegreeC)