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Lucas-MilhauptSil-Fos 15 is the preferred alloy for general copper-copper brazing; the phosphorous in the Sil-Fos family serves as a fluxing agent, no flux is recommended. Sil-Fos 15 is the best alloy to use when joining metals where close fit-ups cannot be maintained and is well suited for use in refrigeration applications.


  • Joins CU to CU (phosphorus serves as flux)
  • Joins CU to Brass (flux is recommended)
  • Highest joint ductility of entire Sil-Fos family
  • Slow Flow
  • Made in USA
  • Item#:
    95150
    Manufacturer Item:
    95150
    Manufacturer:
    LUCAS-MILHAUPT WARWICK
    Lucas-MilhauptHandy-Flo 6 is a silver-copper-phosphorus alloy used for brazing copper to copper or copper to copper alloys, most often in the HVAC industry. It should not be used on ferrous or nickel base materials due to the brittle intermetallic that forms. The phosphorus in the Handy-Flo 6 serves as a fluxing agent, so the alloy does not require flux for copper to copper joints. Flux is recommended for copper to brass joints.
    • Joins CU to CU (phosphorus serves as flux)
    • Joins CU to Brass (flux is recommended)
    • Melts & flows at temperatures very close to 15% Ag
    • Slow flow
    • Made in USA
    Item#:
    95120
    Manufacturer Item:
    95120
    Manufacturer:
    LUCAS-MILHAUPT WARWICK
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