... No: 2.1461 Applications => Joining and overlay welding of copper zinc alloys ,low copper materials,also for ... work pieces preheating is recommended For multilayer welding on steels,pulsed arc welding is recommended .Appropriate for MIG brazing ... 90 HB Welding position => PA,PB,PC,PE,PF Shielding gas => I1,I2,I3 (Argon,Helium or Argon/Helium mixtures ... intended for guidance only. copper alloy welding wire