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Brazing rods

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Brazing rods are filler materials used in the brazing process which is a joining technique that involves melting the filler metal to bond two or more metal surfaces together.

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Brazing Rods

In the brazing process, the brazing rod is placed at the joint and then heated until it melts and flows into the joint. It solidifies as it cools down forming a strong bond between the two metals, joining them together. 

There are different types of brazing rods made of different materials so they can form bonds between different types of metals. For example, joining tungsten carbide to steel will require a brazing rod composed of different materials. 

Brazing rods are typically composed of alloys that have a lower melting point than the base metals being joined, allowing them to form a bond without melting the base metals. 

Brazing rods come in different diameters. The right diameter to use will depend on the thickness of the material being joined. It is important to keep in mind that a thinner brazing rod will melt quicker. If you use a thin brazing rod to join a thick material then your brazing rod may melt before even heating up the metal resulting in poor bond. 

Multipurpose Brazing Rod

A Sifbronze No1 is a low-temperature multi-purpose brazing rod used for a variety of applications. It is suitable for brazing and bronze welding of steels, cast iron, copper and its alloys. A Sifbronze No1 brazing rod is available in 1.6mm, 2.4mm, and 3.2mm diameter. 

Sifbronze No101 is a special brazing rod particularly suitable for use with gas flux. It features free-flowing characteristics as it contains Manganese and Tin. 

Brazing Flux

Some brazing rods may have a flux core and some may not. You can buy brazing flux separately in a jar and apply it separately to the welding materials. Flux helps remove oxides and impurities from the metal surfaces, ensuring proper wetting and bonding of the filler metal.

Sifredicote No1 are multi-purpose brazing rods similar to Sifbronze No1 but with a full flux coating providing the added benefit of faster, continuous brazing without having to flux-dip. They are suitable for general mild steel work, galvanised steel, and dissimilar metal applications. Sifredicote No1 brazing rods are available in 1.6mm, 2.4mm, and 3.2mm diameter. 

Aluminium Brazing Rod

An aluminium brazing rod is used for joining aluminium and aluminium alloys. Engweld stocks Sifalumin No27 1.6mm, also available in 2.4mm and 3.2mm diameter. They are general-purpose aluminium brazing rods with 5% magnesium offering excellent corrosion resistance and high strength. The Sifalumin No27 brazing rods have a melting point of 640°C and are suitable for welding magnesium-bearing aluminium, alloys such as 5251 (N1), 5154 (N5), 5454 (N51). It can also be used for other heat-treatable alloys such as 6063 (H9), 6061 (H20), and 6082 (H30). 

Sifcupron No17 is a copper phosphorus alloy rod with good electrical conductivity and corrosion resistance. It is suitable for copper tubing, switchgear, motors etc. 

Sifsilcopper No968 1.6mm, also available in 2.4mm, is a copper brazing rod and contains 3% silicon and 1% manganese, suitable for surfacing steel and dissimilar metal applications. It is commonly used for fusion welding materials of similar composition, copper alloys (brass) and for TIG brazing steels. 

If you can’t find the brazing rod in a particular diameter you need for your application or have any questions about brazing rods then please contact us and speak to one of our experts. 

 

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