Al

Aluminum consumables for welding of alloys with mostly pure aluminum basis (maximum 0,5% of alloyed elements). Titanium acts as grain refiner offering the material special characteristics as, for example, a higher corrosion resistance. Applications in the chemistry, construction and food industry as well as in electrical engineering, in the chemical sector and in metallization. This alloy is also used for flame and arc spray metallizing.

Consumables suitable for welding aluminum and pure aluminum alloys.

Pure aluminum (i.e. with a minimum aluminum content of 99.50%) presents a face-centered cubic (fcc) microstructure.

• EN W.Nr.: EN AW-Al 99,0 (1200), EN AW-Al 99,7 (1070A), EN AW-Al 99,5 (1050A), EN AW-Al 99,5 (1350), EN AW-Al 99,8 (1080A)

Weld surfaces often exhibit oxides and weld dirt, appearing in shades of gray to black, predominantly composed of aluminum oxide and magnesium oxide. To prevent lack of fusion defects, it is advisable to eliminate smut and oxides before applying another weld pass. The most straightforward method for this is to use a wire brush, whether manually or power-driven. Ensure the wire brush is clean and exclusively used on aluminum. It's crucial to understand and control the high melting and solidification rate associated with the gas metal arc welding process to avoid entrapped hydrogen gas in the welds and achieve optimal results. For thicker plate materials, preheating to 150°C is necessary for effective welding.