Lastek 62

Welding of aluminium castings

Coated electrode for repairing cast aluminium and joining aluminium sheets.

Good bond on the base metal.

Porosity free deposit.

Specifications & Usage


Repair of motor blocks, pump housing, pulleys, gear boxes.

Construction of silos, tanks and other constructions.

Repair of casting defects.

Hardness: 50 - 60 HB


Keep the electrode perpendicular to the work piece.

Weld with a short arc to avoid overheating (and possible burn through) and keep the amperage as low as possible. If necessary lower the amperage during welding.

Thick pieces: preheat to 150-200 °C (300-400 °F).

The diameter of the electrodes is more or less equal to the wall thickness of the piece.

The flux-residues should be thoroughly removed with warm water and soap, to avoid corrosion.

The electrodes should be kept dry or they can be dried before welding at a temperature of 150 °C (300 °F).


Welding proces: Covered electrode (SMAW)
Material Type: Aluminium
Welding positions: All, except vertical down.
Norm : EN 573-3
Classification: E AlSi12
Norm: AWS A5.3
Classification: ER 4047
Minimum packing: 5 kg in a plastic box