Lucas Milhaupt 95060 Brazing Alloy

The Lucas Milhaupt 95060 Sil-Fos 5 Brazing Alloy is a professional-grade phosphorus-copper-silver alloy engineered for high-performance joining in HVACR and industrial piping systems. Containing 5% silver, this alloy provides increased ductility and resistance to vibration compared to lower-silver alternatives, making it a standard choice for refrigeration lines and heat exchanger assemblies. With a solidus of 1,190°F and a liquidus of 1,495°F, Sil-Fos 5 features a medium flow range that allows technicians to bridge gaps in loose-fitting joints while maintaining excellent capillary action for tighter tolerances. It is self-fluxing on copper-to-copper connections, eliminating the risk of internal system contamination from flux residues. When joining copper to brass or other copper-base alloys, a separate brazing flux is required to ensure proper wetting. This 5 lb package contains approximately 28 rods (20-inch length), providing a bulk supply for high-volume field installations and mechanical shop work.

Key Technical Benefits:

• Optimal Ductility: The 5% silver content improves the alloy's ability to withstand thermal cycling and mechanical stress in refrigeration circuits.
• Flux-Free Copper Brazing: Simplifies the workflow for copper to copper joints by utilizing the phosphorus content as a deoxidizing agent.
• Controlled Flow: The wide melting range (305°F difference) provides the "plastic" state necessary for capping joints and filling larger clearances.
• HVACR Grade: Specifically formulated to meet the requirements of pressure-tight connections in refrigeration and air conditioning applications.
• Mass Density: Offers high corrosion resistance and structural integrity for long-term service life in underground or exposed piping.

Common Contractor Questions:

Can I use Sil-Fos 5 on ferrous metals like steel or iron?
No, phosphorus-bearing alloys like Sil-Fos 5 should never be used on steel or other ferrous materials. The phosphorus reacts with iron to create a brittle intermetallic layer that will lead to joint failure under stress.

What is the difference between Sil-Fos 5 and Sil-Fos 15?
The 95060 Sil-Fos 5 has a lower silver content and a wider melting range. While Sil-Fos 15 offers more ductility for extreme vibration, Sil-Fos 5 is often preferred for standard HVACR installations where a cost-effective, high-strength brazing rod is required.

Do I need flux when brazing brass fittings?
Yes. While the alloy is self-fluxing on copper, you must apply a brazing flux when joining copper-base alloys such as brass or bronze to ensure the surface oxides are removed and proper wetting occurs.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.