Brazing is a joining process of two or more metal parts into a single assembly by heating the assembly to at least 840°F, and using a filler metal that will melt above 840°F, but below the melting point of the metals to be joined. Brazing produces a structural bond between the joined metals.

Brazing should not be confused with soft soldering where a seal is made between the metals. Solders, by definition, melt below 840°F. Too often silver brazing is called silver soldering, which is technically incorrect.

Brazing is very crucial in today's multi-faceted industries. It is suitable for joining nonferrous metals, ferrous metals and combinations of the metals quickly and easily. The techniques to be used by brazing operators are easily understood, and the training of operators is quick and strait forward. The process is suitable for use in high volume production, such as moving conveyor lines. Brazing joints are pressure-tight and brazed metals are suitable for structural members.

Silver brazing alloys are manufactured in a wide variety of chemical compositions. The percent of silver within the brazing alloys varies depending on the application. Other typical components of the brazing alloy include phosphorous, copper, zinc, silicon, and cadmium. Each component adds specific advantages to the brazed joint.

Silver brazing is typically performed with a torch or an oven. A fluxing agent is used to clean and prepare the joint. In some applications, the presence of phosphorous in the brazing alloy eliminates the need for flux.

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