| Argo-braze™ 40 is a special-purpose silver-copper-zinc-nickel brazing filler metal. It has a comparatively long melting range and is consequently a good gap filling alloy that produces large fillets. It contains nickel that has been shown to improve wetting on cemented tungsten carbide and to reduce the tendency for interfacial corrosion on stainless steel. Argo-braze™ 40 is 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. Argo-braze™40 will fill joint gaps of between 0.1mm and 0.25mm at brazing temperature. Argo-braze™ 40 is used for the brazing of tungsten carbide tips to steel backings. It can also be used on stainless steel, mild steel, cast iron and non-ferrous alloys. It has also been used to braze stainless steel parts in automotive applications. Information provided by Johnson Matthey Metal Joining |
