Lastek 3476 IS

Soft solder for aluminium

Flux cored soft solder for aluminium and its alloys: pure aluminium, AlMg up to 3 % Mg, AlMn, AlCu.

Contains no zinc or cadmium, provides good penetration and has a good electrolytic corrosion resistance on aluminium.

The low working temperature avoids distortion of profiles and plates.

Specifications & Usage


Soldering of most Aluminium alloys, but AlMg5, AlSi12 and anodised aluminium are very difficult to wet.

Lastek 3476IS can also be used for joining aluminium to copper, brass, nickel silver, stainless steel and so on.

Temperature: 178 - 270 °C (350 - 520 °F).


Clean and degrease the pieces to be joined.

Preheat the workpieces rapidly up to a maximum of 350 °C (662 °F) with an oxy/acetylene, propane or butane flame (or use a soldering iron with copper tips), and apply the


Do not overheat the flux (max. temperature 350 °C - 662 °F).

For an optimum strength, use sufficient overlapping and use a joint clearance of 0.05 - 0.10 mm (2-4 thou).


Welding proces: Brazing rod
Material Type: Soft solder
Welding positions: NA
Minimum packing: 0.5 kg spool