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SIL-FOS 18

Product Overview

Sil-Fos 18 is a low temperature silver-copper-phosphorus brazing filler metal. Its self-fluxing nature on copper makes it an excellent fit for HVAC work. It can also be used to join brass when used in conjunction with a suitable brazing flux, e.g. Handy Flux or Ultra Flux. Due to its eutectic nature, Sil-Fos 18 flows rapidly into the braze joint making it the best choice for tight gaps or long shear depths.
  • Self fluxing on copper
  • Fast flow
  • Penetrates longer joints

Typical Industry Applications:

HVAC/R Refrigerant systems, air conditioning coils, evaporator coils
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Product Details

Name:SIL-FOS 18

Nominal Composition:Silver 17.60, Copper 76.05, Phosphorous 6.35

Liquidus:1190 °F °, 643 °C

Solidus:1190 °F °, 643 °C

Max Recommended Brazing Temperature:1300 °F, 704 °C

Heating Methods:Controlled Atmosphere, Open Air

Industry Specifications:

  • AWS: BCuP-8
  • ISO 17672: CuP 285

Common Industries

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HVACR

Lucas Milhaupt offers the best brazing alloys, soldering products, and HVAC/R brazing equipment on the market. Learn how we help HVAC OEMs & Service Technicians improve their brazing process.