AWS A5.8 BCuP-5 QQ-B-654A
The industry standard for air conditioning/refrigeration applications. ; ; Typical application: Good ductility; ; Phos/copper and silver/phos/copper alloys are used to braze copper to copper and copper to brass. The phosphorus content in these alloys makes them self-fluxing on copper. When brazing brass or copper to brass, use Stay-Silv® white brazing flux. These alloys are not recommended for brazing steel or other ferrous metals.