Union K 52 Ni is a solid MIG/MAG wire. It suits welding mild and low-alloy steels on steel structures, tanks, machine frames and workshop work on black steel.
It joins grades such as P355NL2, P460NL2, S500QL1, API5L, L290MB, L485MB and S355MC together with their equivalents, by hand with a semiautomatic torch and on mechanised stations.
- Classification EN ISO: G 50 6 M21 Z3Ni1/G 46 4 C1 Z3Ni1
- AWS classification: ER80S-G [ER80S-Ni1(-
- Diameters: 1.0 / 1.2 mm
On thicker parts and in a cold workshop plan preheating to cut the risk of cold cracking. Watch the wire stick-out from the contact tip, too long a one lowers the arc voltage and worsens the fusion. Set the gas flow so the pool is covered over the whole length of the bead, and shield the station when you work in wind. Match the diameter to the thickness and the position, thinner wires are easier to control in constrained positions.
