Union AlMg 3 is a solid MIG/MAG wire for welding aluminium and its alloys. It is used on aluminium structures, tanks, vehicle parts and shipbuilding products.
It joins grades such as EN AW-5754, AlMg3, EN AW-5454, AlMg3Mn, AlMg2, EN AW-5251 and AlMg2Mn0 together with their equivalents. The wire runs by hand with a semiautomatic torch and on mechanised stations, and it goes into transport, the food industry and structures built to resist atmospheric corrosion.
- Classification EN ISO: 18273 S Al 5754 (AlMg3)
- AWS classification: A5.10 / SFA-5.10 ER5754
- Shielding gas: I1, I3
Push the torch and keep the wire path in the feeder short and straight, aluminium coils up easily in the liner. Match the drive rolls to the wire diameter and check the liner, wire slip shows up at once in an unstable arc. Watch the wire stick-out from the contact tip, too long a one lowers the arc voltage and worsens the fusion.
