Silver welding rods, have outstanding brazing properties and wide capabilities. Phosphorus will alloy readily with copper. Phosphorus is a reducing agent for copper and also deoxidizes silver. These brazing alloys of copper-phosphorus and silver-copper-phosphorus are self-fluxing on pure copper.

The reduction of phosphorus and additions of silver have a profound effect upon the fluidity of brazing alloys. The alloys of higher phosphorus content are extremely fluid, while the lower phosphorus, high silver alloy has a broad plastic range. Even small adjustments in alloy percentages have a marked effect on brazing alloy fluidity.

These brazing alloys are primarily used for joining copper and copper alloys and copper-phosphorus can be used for all brazing processes.

Phos/Copper-Silver Brazing Alloys

Brazing Alloys	CHEMICAL COMPOSITION (%)				Melting Range		Application
	Cu	Ag	P	Impurty Total	Solidus /	Liquidus /
BCu91PAg	Bal.	1. 8~2. 2	6. 8~7. 5	≤0. 10	1190/643	1455/790	For brazing copper parts in air-conditioners, freezers, refrigerators and motors. The brazing performance is excellent.
BCu88PAg		4. 6~5. 2	6. 5~7. 0		1190/643	1445/785
BCu87PAg		5. 8~6. 2	6. 8~7. 5		1190/643	1370/745
BCu84PAg		9. 5~10. 5	6. 0~7. 0		1195/647	1210/655
BCu80PAg		14. 5~15. 5	4. 8~5. 3		1190/643	1470/800