Sil-Fos 5% Silver Brazing Alloy

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Lucas Milhaupt Sil-Fos 5% Silver Brazing Alloy

Sil-Fos 5 is an alloy for copper-copper brazing, specifically appropriate for filling gaps, forming fillets. No flux required due to phosphorous in the Sil-Fos family.

  • Joins CU to CU (phosphorus serves as flux)
  • Joins CU to Brass (flux is recommended)
  • Designed for applications where close fit-ups cannot be maintained
  • Slow Flow
  • Made in USA

Industry Applications:

HVAC/R Refrigerant systems, air conditioning coils, evaporator coils
  • Name:SIL-FOS 5
  • Nominal Composition:Silver 5.00, Copper 89.00, Phosphorous 6.00,
  • Liquidus:1495 °F, 813 °C
  • Solidus:1190 °F, 643 °C
  • AWS:AWS: BCuP-3

    Download Technical Data Sheet

    Options: (1 lb Tube)

    • 1/16" (1.6 mm)
    • 3/32" (2.4 mm)
    • 1/8" (3.2 mm)