BAG155 is a “extra-soft” brazing alloy for general use, suitable for joining ferrous and non-ferrous materials (steel, copper, brass, nickel, etc.). This silver-based product (Ag 55% by weight) is a quaternary alloy with silver, copper, zinc and tin. The presence of zinc and tin, with the same silver content as other alloys, lowers the solidus point, reduces the melting range and ensures more uniform melting of the filler material during brazing. The high zinc content guarantees good wettability of the molten metal especially in the case of ferrous substrates. The product does not contain cadmium in compliance with the RoHS directive.