| Argo-braze™ 60 is a specialized cadmium free and zinc free silver brazing filler metal which makes it suitable for flux-less brazing in reducing or inert gas atmospheres as well as vacuum. This filler metal is also available as vacuum tube grade material with low and controlled levels of volatile impurities in which case it is designated Argo-braze™ 60V. Being zinc free the alloy is suitable for the brazing of components in applications where dezincification of zinc containing filler metals might occur, such as exposure to salt water. The tin content of this filler metal depresses the melting temperature and improves its wetting on ferrous parent metals over the silver-copper filler metal Argo-braze™ 72V. It is, however, prone to liquate (separate into low and high melting constituents) if it is heated slowly through its melting range. For this reason rapid heating methods should be employed wherever possible. Joint gaps should be between 0.075mm and 0.2mm at brazing temperature. This filler metal was formerly called RTSN™. Information provided by Johnson Matthey Metal Joining |
