Sanhuan SAgP-15

Chemical Composition %

Physical Properties

Specifications    
AWS A5.8/A5.8M BCuP-5

ASME SECTION II, PART C SFA-5.8 BCuP-5

DIN EN 1044 CP 102

DIN 8513 L-Ag15P

Brazing Characteristics
Sanhuan Phos-Copper-Silver brazing alloy SAgP-15 is a copper rich brazing filler metal. The phosphorous content form its "self-fluxing" properties when used on copper. However, when joint copper base alloys, such as brass or bronze, braze with flux SFB-102 is recommended. This filler metal should not be used on ferrous or nickel-based alloys or on copper-nickel alloys containing a nickel content in excess of 10%, as brittle intermetallic compounds are formed at the filler metal-base metal interface. Normally the corrosion resistance of Sanhuan SAgP-15 is of the same order as copper, but is it be used in the joints exposed to sulfur compounds, especially in gasses or oils at temperatures above normal room temperature. As the corrosion by sulfur is cumulative, even very small percentages will eventually cause failure of the joint by disintegration. Exposure to pressured steam can also result in accelerated corrosion.
SAgP-15 has a strong tendency to liquate(i.e. to separate into low and high melting constituents) if heated slowly through its melting range, as normally occurs in furnace brazing. The results in leaving a "skull" of unmelted alloy behind may objectionable from the standpoint of appearance. In furnace brazing it is preferable to pre-place the alloys inside the joint where the skull is not visible.

Application
Sanhuan Phos-Copper-Silver brazing alloy SAgP-15 is can be used when narrow joint clearances cannot be held. Joint clearances of 0.002in. to 0.005in. [0.05mm to 0.13mm] are recommended.
Available Forms
Rods, Wires, Flats, Rings, Coils  
 
The Technical Services Department at Harhigh is available to help answer any questions you may have with regard to your specific brazing application, joint design and filler metal selection.