At what temperature does the filler rod for brazing typically melt?

The filler rod for brazing typically melts above 450°C, making this the correct answer. Brazing is a metal-joining process that involves melting a filler metal to join workpieces together. The melting temperature of brazing filler materials generally ranges from about 450°C to 900°C, depending on the specific composition of the filler rod used.

Filler metals that are commonly used in brazing, such as those made from brass or silver alloys, are specifically formulated to melt above the range of most base metals but below the melting point of the metals being joined. This ensures a strong bond without damaging the integrity of the parts being brazed.

Understanding this temperature range is crucial for selecting the appropriate filler material for different applications. Choosing a filler that melts at too high a temperature could lead to melting or warping of the components being joined, while a filler that melts too low may not adequately join the materials, leading to weak joints.