15620F1 / Stay-Silv® 15 Phos-Copper Silver Brazing Alloy - .050" x 1/8" x 20 (28 Sticks)

• BRAZING PROPERTIES

Stay Silv 15 silver brazing filler metal designed for copper to copper applications. It can also be used on copper to low zinc brass but this application requires use of Stay Silv white brazing flux.
Like many phosphorus/copper brazing filler metals Stay Silv 15 will flow rapidly when heated quickly to its liquidus. This allows penetration into tight clearance connections. With slower heating the alloy melting range provides the ability to filler wider gaps.
Stay Silv 15 is often chosen as an economical alternative to higher silver content alloys for copper and brass applications.
Stay Silv 15 is not recommended for brazing steel or other ferrous base metals. In these applications the phosphorus content promotes formation of a low ductility intermetallic with the base metal.

• CORROSION RESISTANCE

Generally similar to the copper base metal, but phosphorus containing alloys, including Stay Silv 15, should not be used if the braze is exposed to sulfur or sulfur compounds in service.

• AVAILABLE FORMS

Stay Silv 15 is often used in rod form in manual brazing applications. It is available formed as brazing rings or on spools for automated feeding.

• Chemical Composition: 15% Silver, 5% Phosphorus, Balance Copper
• Specifications: AWS/A5.8 Class BCuP-5, Fed. Spec. QQ-B-654A, Grade III.
• Liquidus Temperature: 1480?F (804?C)
• Solidus Temperature: 1190?F (643?C)