Stay-Silv® 2 Brazing Alloy HARRIS

Stay-Silv® 2 brazing filler metal is a medium temperature range alloy used for brazing copper and copper-to-brass joints. The addition of silver lowers the solidus temperature and widens the melting range compared to Harris 0, allowing improved alloy flow and joint formation.

The alloy performs best in applications with joint clearances between 0.002 inch and 0.005 inch, making it suitable for HVAC, plumbing, and industrial copper assembly work where controlled fit-up conditions are maintained.

Corrosion resistance is generally similar to copper base metals; however, phosphorus-containing alloys should not be used where brazed joints are exposed to sulfur or sulfur compounds during service.

Key Benefits

Suitable for brazing copper and copper-to-brass joints
Silver addition improves melting behavior and flow
Medium melting range supports controlled joint filling
Performs well in closely fitted joint applications
Provides reliable joint strength for industrial and HVAC use
Available in multiple forms for installation flexibility

Specifications

Product Name: Stay-Silv® 2
Product Type: Copper-Phosphorus-Silver Brazing Alloy
Suitable Materials: Copper and copper-to-brass joints
Recommended Joint Clearance: 0.002 in to 0.005 in (0.05 mm to 0.13 mm)
Solidus Temperature: 1190°F (643°C)
Corrosion Behavior: Similar to copper base metal; avoid sulfur exposure
Recommended Flux: No flux required for copper; Stay-Silv® white or ECO SMART® flux recommended for brass applications
Available Forms: Standard wire diameters, rods, spools, and preform rings
Specification Compliance: AWS A5.8 BCuP-6, ASME Section II C SFA 5.8 BCuP-6, ISO 17672 CuP 280

Applications

Copper tubing and plumbing assemblies
HVAC and refrigeration piping connections
Copper-to-brass component joining
Industrial copper fabrication and maintenance
Production and repair brazing operations

FAQs

Is Stay-Silv® 2 self-fluxing on copper joints?
Yes, no additional flux is required when brazing copper-to-copper joints.

Can it be used on brass?
Yes, but proper brazing flux should be applied for copper-to-brass joints.

What joint clearance is recommended?
The alloy performs best with clearances between 0.002 inch and 0.005 inch.

Can it be used where sulfur exposure occurs?
No, phosphorus-containing alloys should not be used in sulfur exposure environments.