Union S 2 NiMo 1 is a low-alloy, high strength submerged arc (SAW) wire. It is used on working machines, booms, cranes and structures where a high yield strength matters.
The wire works as a set with a matched flux, which decides the mechanical properties of the weld, and its copper coated surface improves current pick-up in the contact tip. The high deposition rate shortens the time needed to fill heavier grooves.
- Classification EN ISO: 14171-A SZ2Ni1Mo0.3
- AWS classification: A5.23 / SFA-5.23 ENi1
- Shielding: flux matched to the wire, no shielding gas
- Diameters: 2.5 / 3.2 / 4.0 mm
Keep the heat input within the range the steel maker specifies, going above it lowers the strength of the joint. Match the flux to this wire and check how dry it is, drying the flux decides the hydrogen level in the weld. Keep an even flux layer over the arc, too thin a layer exposes the arc and too thick a one spoils the bead shape.
