Union Al 99,7

Is a pure aluminium welding wire for joining and surfacing of aluminium materials according to EN ISO 18273. It is a welding consumable with Ti for grain refinement and weldable in all positions.

Zirconium micro-alloyed aluminium TIG rod. The weld metal is uncritical in terms of hot cracks. Suitable especially for complicated welding constructions with critical tensions. Base material should be cleaned near the seam. Pre-heating 150°C for plates > 15 mm.

Rod for GTAW of AlMg alloys containing up to 5% Mg. Seawater-resistant weld metal. Susceptible to stress corrosion cracking if exposed to service temperatures > 65°C. Good colour matching with base metal after anodizing. Thorough cleaning of the workpiece bevels is necessary prior to welding.

UTP 485 is an aluminium stick electrode with 5% Si and a special coating. It is suitable for joining and surfacing AlSi alloys with a Si content of up to 7% and for dissimilar joints of different Al-alloys, such as:

3.3206 AlMgSi 0.5 - 3.2371 G-AlSi 7 Mg
3.3210 AlMgSi 0.7 - 3.2341 G-AlSi 5 Mg
3.2315 AlMgSi 1 - 3.2151 G-AlSi 6 Cu 4
3.3211 AlMg 1 SiCu

UTP 485 is suitable for welding plates of wall thicknesses> 2 mm. The soft arc produces a fl at, fi newly-rippled weld seam. Easy slag removal.