Stay-Silv® 5 Brazing Alloy HARRIS

Stay-Silv® 5 silver brazing filler metal is primarily designed for copper-to-copper brazing applications. It can also be used for joining copper to low zinc brass when suitable brazing flux is applied.

Like many copper-phosphorus brazing alloys, Stay-Silv® 5 flows rapidly when heated quickly to its liquidus temperature, allowing penetration into tight clearance joints. When heating is slower, the alloy’s melting range helps fill wider joint gaps, providing flexibility across different connection conditions.

Stay-Silv® 5 is commonly selected as an economical alternative to higher silver content alloys for copper and brass applications. However, it is not recommended for brazing steel or other ferrous metals because phosphorus in the alloy forms brittle compounds with ferrous base materials.

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

Key Benefits

Designed for copper-to-copper brazing applications
Flows rapidly into tight clearance joints
Able to fill wider gaps with slower heating
Economical alternative to higher silver alloys
Suitable for copper-to-brass joints with proper flux
Provides reliable performance in HVAC and plumbing work

Specifications

Product Name: Stay-Silv® 5
Product Type: Copper-Phosphorus-Silver Brazing Alloy
Suitable Materials: Copper and copper-to-low zinc brass with flux
Self-Fluxing Feature: Yes, for copper-to-copper joints
Not Suitable For: Steel and ferrous metals
Corrosion Behavior: Similar to copper base metals; avoid sulfur exposure
Recommended Flux: No flux required for copper-to-copper; Stay-Silv® white or ECO SMART™ flux recommended for brass applications
Available Forms: Rods, brazing rings, and spooled wire for automated feeding

Applications

Copper piping and plumbing assemblies
HVAC and refrigeration connections
Copper-to-copper joint brazing
Copper-to-brass component joining
Maintenance and production brazing operations

FAQs

Is Stay-Silv® 5 self-fluxing on copper joints?
Yes, no flux is required for copper-to-copper brazing.

Can it be used on brass?
Yes, when proper brazing flux is used for copper-to-brass connections.

Can it be used on steel?
No, phosphorus-containing alloys are not recommended for ferrous metals.

What heating method works best?
Rapid heating supports penetration into tight joints, while slower heating allows filling of wider gaps.