BÖHLER NIMO 1-IG is a TIG rod for welding quenched and tempered high strength steels. It is used in machine building, crane structures and commercial vehicles.
The rod joins grades such as S460N, S460M, S460NL, S460ML, S460Q, S555Q and S460QL, along with related materials. It handles pipeline welding including fill passes, and it is used on boilers and pressure vessels under statutory inspection.
- Classification EN ISO: 16834-A, W 55 6 I1 Mn3Ni1Mo
- AWS classification: A5.28 / SFA-5.28, ER90S-G
- Diameters: 0.9 / 2.4 / 3.2 mm
Keep the heat input within the range the steel maker specifies, going above it lowers the strength of the joint. Keep the rod inside the gas shield even after you lift it from the pool, a cold oxidised end will contaminate the next drop. Set the gas post-flow long enough for the pool and the electrode to cool under the shield. Match the diameter to the plate thickness and the welding position, thinner rods are easier to control out of position.
