Union AlSi 10 Cu 4

Pure aluminium welding rod for joining and surfacing of aluminium with a maximum of 0.5% of alloyed elements. The welding consumable contains Ti for grain refinery. Base material should be cleaned near the seam.

Rods for GTAW of AlMg alloys. Mg-content max. 2,8% to obtain intergranular corrosion resistance. Seawater-resistant weld metal. For obtaining near-matching coloured joints where anodizing is required. Pre-heating 150°C for plates > 15 mm.

Solid wire for GMAW 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. The welding consumable contains Ti for grain refinery. Thorough cleaning of the workpiece bevels is necessary prior to welding.

Rods for GTAW of AlSi containing up to 5% Si. Oxyacetylene welding respectively brazing with suitable fl uxes possible. The weld metal is not suitable for anodizing for decorative purposes. Very fl uid weld pool. Base material should be cleaned near the seam. Pre-heating 150 - 200°C for plates > 15 mm. Do not use for welding hardenable alloys is highly stressed zones.