Aluminum-Copper flux cored brazing wire
Aluminum-Copper flux cored brazing wire

The Cu-Al flux cored wire consists of a Zn-Al alloy in strip form that is rolled around a white, powdered fluoride flux. The flux is non-corrosive and non-hygroscopic, It’s used to braze for joining copper to aluminum, brass to aluminum and aluminum to aluminum by flame brazing, induction brazing and furnace brazing. It’s the ideal brazing material for joining copper tube to aluminum tube at pressent in refrigeration industry.

  • Standard Alloy Chemical Composition(%) Solidus Liquidus Application
    Cu-Al flux cored wire BD802 Zn:Remainder Al:1.8-2.2 Cu:<0.3% Mn:<0.15 Mg:<0.1 Pb:<0.005 Cd:<0.005 Other:<0.15 Flux(CsAlF4):12-18% 420℃ 470℃ Copper to Aluminum brazing. Low melting point.
    Cu-Al flux cored wire BD822 Alloy 2# ZnAI 420℃ 480℃ Copper to Aluminum brazing. Excellent welding performance.
    Cu-Al flux cored wire BD815 Alloy 3# ZnAI 420℃ 480℃ Copper to Aluminum brazing. Widely used for copper and aluminum wire welding of radiators, motors, batteries, and household appliances

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