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.
| Alloy | Standard | Chemical Composition(%) | Solidus | Liquidus | Application |
| BD802 | Cu-Al flux cored wire | Zn:Bal 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. |
| BD822 | Cu-Al flux cored wire | Alloy 2# ZnAI | 420℃ | 480℃ | Copper to Aluminum brazing. Excellent welding performance. |
| BD815 | Cu-Al flux cored wire | 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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