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FOS-FLO

Product Overview

Fos-Flo is a copper-phosphorus alloy used for brazing copper-copper or copper to copper alloys. It is commonly used for HVAC applications where a more economical or free flowing alloy is required, though its ductility is lower than the silver bearing copper-phosphorus alloys and therefore should not be used where critical impact or vibration stresses are encountered in service. Where improved ductility is required, Sil-Fos 15 is recommended.
  • Joins CU to CU (phosphorus serves as flux)
  • Joins CU to Brass (flux recommended)
  • Very economical alloy
  • Fast flow
  • Made in USA

Typical Industry Applications:

HVAC/R refrigerant systems, air conditioning coils, evaporator coils

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Product Details

Name:FOS-FLO

Nominal Composition:Copper 92.75, Phosphorous 7.25

Liquidus:1460 °F °, 793 °C

Solidus:1310 °F °, 710 °C

Max Recommended Brazing Temperature:1550 °F, 843 °C

Heating Methods:Controlled Atmosphere, Open Air

Industry Specifications:

  • AWS: BCuP-2
  • ISO 17672: CuP 181

Distribution Offerings

Custom solutions available upon request.

Product NameDimensionsCase QuantityOEM FormsOEM Range
95000.125"x.050"x20" : 28 rods25 lbsStripThick x Width
95011.125"x.050"x20" : bulk25 lbsWireDiameter

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.