Copper and Copper Alloys
Copper
- high thermal conductivity and needs preheating to counteract the heat sink effect
- welded by TIG or MIG
Brasses
- main problem is volatilisation of zinc
- only low zinc brasses can be welded by MIG or TIG
Bronzes
- mostly weldable (not gun metal or phosphor bronze)
- careful cleaning and deoxidation necessary to avoid porosity