Silver brazing filler metals have low melting point, good wettability and filling performances. They also have features of high mechanical strength, fine plasticity, electrical conductivity and corrosion resistance.



The filler metals are used in the brazing of stainless steel, carbon steel, hard alloys, copper and copper alloys, etc. In order to meet some specific needs in the brazing process, indium, tin or nickel can be added to compose quaternary alloys or complex alloys. Flux is usually applied to achieve the desired joints.

Copper and phosphorus are the two major elements in the copper-phosphorus brazing alloys The alloys have good fluidity, low melting temperature and the trait of self-fluxing.



They are used in the brazing of copper and copper alloys in resistance brazing, flame brazing and induction brazing without the use of flux. As phosphorus is likely to cause the formation of brittlement in iron, the brazing alloys are rarely used in the brazing of ferrous metals.

Aluminum brazing alloys have relatively low melting points, good wettability and joint filling performance, and sound anti-corrosion properties. Among these products, aluminum-silicon solder and zinc-aluminum solder are more commonly used. Zn-Al solder is usually combined with CsAlF4 eutectic flux to make flux-cored brazing alloys, which are widely used to braze aluminum-copper joints in transformer and refrigeration industries.



Al-Si eutectic-based brazing filler metal is mainly used for brazing of aluminum and aluminum alloys. When brazing copper, nickel is usually plated on the copper surface to reduce the effect of brittle compounds between aluminum and copper. It can be used in flame brazing, induction brazing, furnace brazing etc., and it can form joints with high corrosion resistance.

Vacuum brazing filler metals have appropriate melting point, excellent wettability and filling performance. They also have high mechanical strength, good plasticity and electrical conductivity. The products are applied to the brazing of copper alloys, titanium alloys, stainless steel, carbon steel and hard alloys. Silver flux can be added in order to achieve desirable joints.

Flux-Cored Brazing Alloy
The flux-cored metals are composed of outer metal skin and inner brazing flux, and can be fabricated into various shapes such as rods, wires and preforms according to customers' requests.



The products have the advantages of enhancing brazing automation and efficiency, reducing and controlling the usage of flux as well as improving quality stability. They can be used with automatic shrink-ring and induction brazing equipment to raise productivity.

The flux-coated filler metals are composed of the preformed filler metals and coated flux. The products are similar to flux-cored filler metals in terms of improving brazing automation and efficiency as well as the quality stability. A variety of flux-coated filler metals with different functions can be selected by the customers.