Brazing and soldering
Soldering and brazing are methods of joining metals and other substances through the application of heat and filler material. Once the heat is applied the metal flows through capillary action into the place to be joined. It creates a metallurgical bond between the materials at the molecular level. Brazing is different from soldering in terms of the degree of heat applied in the process. Soldering is undertaken in temperatures below 800°F and a nonferrous filler metal that has a lower melting point than the base metals is used. Brazing temperatures are above 800°F and the filler material is distributed through capillary action onto the closely fitted surfaces.
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