Brazing is a metal joining process in which two or more metal items are joined together by melting and flowing a filler metal into the joint.

Brazing differs from welding in that it does not involve melting the work pieces and from soldering in using higher temperatures for a similar process, while also requiring much more closely fitted parts than when soldering. The filler metal flows by capillary action.

Some of the more common types of filler metals used are: