Lastek 74

Welding Aluminium with 3% Mg

Welding rod for AlMg3 work pieces.

Repair of AlMgSi0.5, AlMgSi1 and AlMgMn (AA6060 – AA6082).

Seawater resistant.

Can be used for TIG and oxy acetylene welding.

Specifications & Usage


Containers, architectural applications, chemical industry, food industry, repair of plates and profiles on trucks.

Work pieces that must be anodised (no discoloration on Si free base metals).


For oxyacetylene welding use a slightly carburising flame + flux Lastek 74A.

Flux residues must be removed with hot water + brushing.

For welding thick pieces: preheat to 150 °C (300 °F).


Welding proces: Tig welding (GTAW)
Material Type: Aluminium
Welding positions: NA
Norm : EN ISO 18273
Classification: S Al 5754 (AlMg3)
Norm: AWS A5.10
Classification: ER 5754
Minimum packing: 5 kg in a cardboard box