For electromechanical constructions, power generators, transformers, electrical motors, heating elements, electrical contacts, disconnecting switches, relays, etc.
| Type | Composition | Brazing temp ℃ | Flux Proportion | Wire Diameter | Note | |
| Alloy | Flux | （wt%） | （mm） | |||
| BD802 | 1# ZnAl alloy | Cs Al F 4 | 420-480 | 10-20% | Φ1.6~Φ2.4 | Copper to Aluminum brazing |
| BD822 | 2# ZnAl alloy | 420-480 | ||||
| BD815 | 3# ZnAl Alloy | 420-480 | ||||
| Standard | Alloy | Chemical Composition (%) | Melting Range | |
| Solidus | Liquidus | |||
| AWS A5.8 | BCuP-3 | Cu:Bal. P:5.7-6.1 Ag:5.0-5.2 | 643℃ | 816℃ |
| AWS A5.8 | BCuP-6 | Cu:Bal. P:6.8-7.5 Ag:1.8-2.2 | 643℃ | 790℃ |
| BCu86PSn | Cu:Bal. P:6.5-7.5 Sn:6.5-7.5 | 640℃ | 680℃ | |
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