AlumWeld Core LQ


High fluidity filler metal with flux in the core for soldering aluminium and its alloys.

AlumWeld Core LQ is a filler metal for aluminium soldering with a non-corrosive flux. Due to the flux content it wets the aluminium and fills the gaps very well. Low melting point and high fluidity significantly facilitates soldering. The package contains 1 m of flux-cored solder with a diameter of 2 mm.

Excellent soldering of:

  • aluminium and its alloys,
  • copper,
  • brass,
  • bronze,
  • steel,
  • stainless steel.
  • Soldering temperature 420 °C.
  • High strength.
  • Easy to machine.
  • Good thermal and electrical conductivity.
  • Corrosion resistance.
Joining of aluminium air-conditioning tubes by soldering.

Fields of application

The solder is perfectly suited for soldering all aluminium components and structures, as well as for repairing radiators and air-conditioning systems. Using a mould (e.g. made of clay), it is possible to make castings and fill larger cavities.

Soldering is very simple. It successfully replaces welding, especially when the use of a welder is not possible. Connections are made with an ordinary torch, e.g. propane-butane. Simply heat up the object to be brazed, apply AlumWeld filler metal so that it melts from its heat, place the joint and leave it to cool down.

Photos of elements soldered with the offered solder are shown below.
We will be happy to answer your questions.
Phone: +48 502 83 83 43



A sample of mild steel brazed to an aluminium extrusion. AlumWeld Core LQ. Two aluminium angles soldered together using Core LQ solder.
Weight 0,024 kg