Thermanit 625 is a solid MIG/MAG welding wire for nickel alloys. It goes into tanks and pipework made of nickel alloys, and into cladding layers on steel.
The wire is fed continuously from the feeder and welded under shielding gas. It handles manual semi-automatic work and mechanised stations alike, and it is used on chemical process equipment, high temperature installations and mixed joints between nickel alloys and steels.
- Classification EN ISO: S Ni 6625 (NiCr22Mo9Nb)
- AWS classification: ERNiCrMo-3
Move the pool more slowly than on steel, nickel alloys are sluggish and will not flow to the groove edges on their own. Set the gas flow so the pool stays covered along the whole bead, and screen the workstation when you weld outdoors. Check the contact tip, a worn bore upsets wire feeding and leads to burnback. Degrease the joint first, sulphur and lead residues after machining cause hot cracking in nickel.
