At what temperature do brazing joints typically melt?

Brazing is a metal-joining process that uses a filler metal with a melting point above 450 degrees Celsius (about 842 degrees Fahrenheit) but below the melting point of the base metals being joined. The process requires heating the base metals to a temperature that allows the filler metal to melt and flow into the joint by capillary action.

The choice of 840 degrees Fahrenheit aligns with the typical melting point threshold for the filler metals used in brazing. This temperature allows for a strong bond to form between the metals without causing any melting of the base materials themselves, which is essential for maintaining the structural integrity of the joints being connected. In practice, commonly used brazing fillers, such as silver or copper alloys, usually achieve optimal flow and bonding characteristics around this temperature, making 840 degrees Fahrenheit the standard melting point for brazing operations.