UTP A 3444 is a TIG rod in a copper alloy of the Cu 6328 type, for welding and braze welding copper and bronzes. It works on water installations, machine parts, plain bearings and hardfacing on bronze surfaces.
You feed the filler into the pool by hand while the arc burns between the tungsten electrode and the weld. The rod also suits cladding runs on steel, and its deposit is copper based.
- Classification EN ISO: 24373 S Cu 6328 (CuAl9Ni5Fe3Mn2)
- AWS classification: A5.7 ER CuNiAl
- Diameters: 2.0 / 2.4 / 3.2 mm
- Approvals: TÜV (01896)
Allow for the high thermal conductivity of copper and preheat heavier sections, otherwise you will not get fusion. Grind the tungsten tip along its axis and hold a short arc, otherwise the pool spreads. Protect the root when you weld from one side, an oxidised underside spoils the corrosion resistance. Match the diameter to the material thickness and the welding position, thinner rods are easier to control out of position.
