Brazing of Non-Ferrous MetalsBrazing is a group of welding processes which produce coalescence of materials by heating them to a suitable temperature and by using a filler metal having a liquidus above 450oC and below the solidus of the base metals. Filler materials for brazing are covered by an AWS specification. They are classified according to analysis: aluminum-silicon, copper, copper-zinc, copper-phosphorus, copper-gold, heat-resisting materials, magnesium, and silver are the basic groupings.