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Solder ReplacementRoHS Compliant Adhesives for Solder Replacement
Master Bond offers RoHS compliant, electrically conductive systems to replace lead soldering. These epoxy and silicone adhesives offer low volume resistivity, low outgassing and high temperature resistance.
Johnson Matthey Silver-flo™ 55 Paint Cadmium Free Silver Brazing Filler Paint
Categories: Metal; Nonferrous Metal; Precious Metal; Silver Alloy; Solder/Braze Alloy

Material Notes: Silver-flo™ 55 Paint consists of a silver brazing filler metal powder (Silver-flo™ 55) and a brazing flux (Easy-flo™ Flux Powder) combined in a volatile organic solvent. The proportions of filler metal to flux are optimized to make the paint suitable for brazing small components by most heating methods.

The silver brazing filler metal in this product - Silver-flo™ 55, is cadmium-free. It combines a low brazing temperature with a short melting range, is very free flowing and produces neat joints with small fillets. These characteristics make it an excellent general purpose silver brazing filler metal.

Joints made with Silver-flo™ 55 Paint are suitable for seawater applications, being resistant to dezincification. The optimum joint gap for this filler metal at brazing temperature is normally 0.05-0.15mm.

Silver-flo™ 55 Paint is designed for use on small components which benefit from the brazing alloy / flux combination being able to be painted onto the surface. It has been used for small components, which are difficult to jig and on occasion on components held together by the operator in the flame of a brazing torch.

Silver-flo™ 55 Paint has a limited amount of flux in it, therefore on medium or large components it would not be suitable because the flux would become exhausted. Larger components with extended heating times will require the application of a flux powder or paste to them prior to brazing and will in most cases use more filler metal than can be applied with Silver-flo™ 55 Paint.

Silver-flo™ 55 can be used to join all the common engineering materials (excluding aluminum) such as copper, copper alloys (including, brasses, bronzes, gun metal, nickel silvers, aluminum bronze with <2%Al and copper nickel), steels including, mild, carbon, tool steel, stainless steels, low alloy steel), tungsten carbide and PCD segments. On tungsten carbide specialized silver brazing filler metals containing nickel / manganese are often preferred.

Information provided by Johnson Matthey Metal Joining

Available Properties
  • Melting Point
  • Solidus
  • Liquidus
  • Copper, Cu
  • Silver, Ag
  • Tin, Sn
  • Zinc, Zn
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solder replacement adhesives
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