UTP A 2535 Nb is a solid wire for joining and building up on identical and similar high heat resistant CrNi cast steels such as X40 NiCrSiNb 35 25 (1.4852), up to service temperatures of 1150 degrees C.
The wire runs under shielding gas, fed continuously from the torch of a semi-automatic set. It also serves for cladding carbon steel surfaces, and it handles manual work and mechanised stations alike.
- Classification EN ISO: 14343 GZ 25 35 Zr
- Diameters: 1.2 mm
Degrease the joint before welding, because sulphur and lead residues left after machining cause hot cracking in nickel. Watch the wire stick-out from the contact tip, too long a stick-out drops the arc voltage and worsens penetration. Set the gas flow so the pool stays covered along the whole bead, and screen the workstation when you weld outdoors. Plan the number of layers and the bead sequence before you start, on heavier joints this keeps distortion down.
