Sterling Lead Free Solder 1 Lb Spool

Sterling® is formulated with a relatively low solidus temperature while maintaining a broader working range. This allows the solder to flow into properly prepared capillary joints while also providing the installer with additional control when a connection requires filling or capping.

For best results, bring the tubing and fitting uniformly to soldering temperature before applying Sterling® to the joint. The heated base metals, rather than direct torch contact with the solder wire, should melt the solder and draw it into the connection by capillary action.

Harris recommends Water Soluble Plumbing Flux for Sterling® when soldering copper and brass plumbing connections. Harris identifies its water-soluble plumbing flux to ASTM B813 for suitable plumbing applications.

Apply only a light coating of flux to cleaned tube and fitting surfaces. Excess flux should be avoided because unnecessary material can collect inside the piping system. After soldering, remove residual flux as required by the flux manufacturer's instructions.

1. Cut and properly deburr the copper tube.
2. Clean the tube and fitting surfaces to remove oxidation and contamination.
3. Apply a light, even coating of compatible plumbing flux.
4. Assemble the tube and fitting fully.
5. Heat the fitting and tubing evenly with an appropriate air-fuel torch.
6. Bring the connection to soldering temperature before applying Sterling® wire.
7. Allow the heat of the joint to melt and draw the solder into the connection.
8. Allow the joint to cool naturally and clean residual flux as required.

Sterling® is designed for installers who want a strong, lead-free plumbing solder without antimony or nickel. Its approximately 7,130 psi tensile strength and 5,970 psi shear strength provide excellent mechanical performance for properly prepared soldered connections.

Its broad working range is also useful to professional plumbers because it provides both capillary-flow performance and enough working latitude for filling and capping joints when necessary.

For potable-water projects, Sterling® provides the additional benefit of recognized NSF potable-water and lead-content compliance.