Lucas-Milhaupt SIL-FOS 18 Silver/ Copper/ Phosphorus Alloy

Applications: Sil-Fos 18 is a moderate cost brazing filler metal suitable for joining copper, brass and bronze alloys where low brazing temperature and free flowing characteristics are required. It should be used on assemblies where good fitup can be maintained. Characteristics: Sil-Fos 18 is a ternary eutectic, low temperature brazing filler metal that is free flowing and self-fluxing on copper and some high copper an copper alloys by virtue of its phosphorus content. Brasses and most bronzes require the use of Handy Flux (or Handy Flux Type A-1 on Aluminum Bronze or Beryllium Copper) for good wetting. This alloy becomes extremely fluid above its melting point. With most joint designs a clearance of .001" to .003" (.025mm.-.075mm) is desirable. Sil-Fos 18 should not be used on ferrous metals or nickel base alloys, since the phosphorus diffuses and produces brittle iron or nickel phosphides at the joint interface.Information provided by Lucas-Milhaupt, Inc.