Cadmium free silver alloy, moderate silver content. Good flowing characteristics and sufficient capillarity, so suitable for joints with large clearances.
For joining mild and low alloyed steel, stainless steel, copper alloys, nickel alloys.
Operating temperature, up to about 300 °C. // Melting range: 680-760 °C.
Lastek B3025 is cadmium free and applies to the European RoHS guideline and the European cadmium guideline.
Machine parts for food and beverage industry.
Mechanical and electrical industry.
Lastek B3025 is also available as coated rod Lastek 3025V.
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).