Brazing Versus Soldering

Brazing and soldering are two processes meant to serve the purpose of bonding two dissimilar metals. A joining filler metal or alloy is inserted between the two metals, in molten form and then heated at a high temperature. The only difference between the two processes by definition is that brazing is carried out at higher temperatures as compared to soldering. Accordingly for brazing the filler metal being used should have a liquidus temperature of above 840 degrees Fahrenheit or 450degrees Celsius, whereas in soldering the liquidus temperature of below 840 degrees Fahrenheit.

Apart from the above difference, the differences in these two processes are marked by a difference in the requirements of braze joints. The strength levels required, the design specifications demanded, all these determine what process is a more suitable.

To have a closer look at the two processes, make a comparative analysis on various criteria like cost effectiveness, flexibility, strength and process control, and to be able to make a judgment regarding which process is suitable for what kind of joints needs, read the complete article.

Five Differences Between Brazing & Welding Processes

Brazing and welding are two processes that are used for joining two metals with the use of a third molten filler metal. But there is a procedural difference between the two techniques which makes both of them more suitable for different kinds of metal bonding requirements. This is because owing to their own styles both the techniques have their own advantages and disadvantages. More than the individual understanding of the two process, this article deals with the comparative suitability of each of them in different situations and requirements. The five most important differences between brazing and welding processes are as follows:

1. When neatness and finish tops the priority list in the quality of the brazed joints required, it is advisable to opt for the brazing process. Brazing results score far better on the neatness and finish scale compared to welded joints which might not be as smooth and neat.



2. The choice between the two processes also depends on the thickness of the metal sections involved in the process. With its intense and focused heating, welding might burn the thinner sections and thus brazing obviously scores again in this respect. But if the section thickness is decent brazing might be required for efficient bonding results.



3. Big assemblies release heat which obstructs the flow path of the filler metal. In such a situation the brazing heat which is broad and uniform might not serve the purpose. Welding with its intensive and narrowed flow of heat is capable of successfully joining the bigger assemblies of metals.



4. Though both the processes are about joining different pieces of metals, brazing produces stronger joints between dissimilar metals as compared to welding, but with a few specification regarding the chemical & physical properties of the base metals and the filler metal chosen. In a case where the differences in the melting temperatures are greater, welding might prove to be an expensive deal altogether.



5. Again in a comparative situation where the you want linear joints, instead of single point bonding brazing is an economical and time saving technique. But for single point bonding requirement, welding is a wiser option any day.