Lastek B3020

Cadmium free silver brazing, brass colour

Cadmium free silver alloy, moderate silver content, for general maintenance.

Suitable for joints with large clearances.

For joining brass and other copper alloys, steel, stainless steel, cast iron and hard metal.

Good colour match with brass.

Operating temperature, up to 300 °C. // Melting range: 690-810 °C.

Lastek B3020 is cadmium free and applies to the European RoHS guideline and the European cadmium guideline.

Specifications & Usage


Machine parts for food and beverage industry.

Chandeliers, brass fittings and brass ornamental pieces.

Valves of bronze and brass.

Heat exchangers.

Automotive and electrical industry.

Lastek B3020 is also available as coated rod Lastek 3020V.


Joint preparation: optimum clearances 0.05 to 0.20 mm.

Preheat the work piece slightly with neutral flame. Preheat the brazing rod slightly and dip it into the flux. The flux will adhere to the rod. Rub the rod along the joint to apply the flux. As soon as the flux is flowing, melt the rod. Continue heating until the alloy flows into the entire joint by capillarity.

Cool down and remove flux residues by brushing with hot water.

Powder flux: Lastek 31C (general work) or Lastek 31CH (higher temperatures, e.g. large work pieces in red copper).

Paste flux: Lastek 31CN (general work) or Lastek 31CNB (stainless steel, hard metals and induction brazing).


Welding proces: Brazing rod
Material Type: Silver solder
Welding positions: PA, PB
Norm : EN ISO 17672
Classification: AG 220
Norm: EN 1044
Classification: AG 206
Minimum packing: 1 kg in a cardboard box (6 boxes in one pack)