Whats the difference between brazing and soldering?

Answer 1

"Nothing really. It concerns the metal your working with. You braze with brass, solder with lead and weld with steel. That's about it.

In general, brazing refers to higher temperature processes than soldering does, but the line is pretty fuzzy."

I don't think its as simple as that, I thought the processes were distinguished by their temperature ranges for a while too until I was told otherwise. There are high temperature solders and low temperature brazing materials. ARC wielding is the actual metallurgical bonding of similar materials together, as opposed to soldering which I feel is more of a semi-physical bond. Long story short I don't know the exact difference from a mettalurgical standpoint but they are infact much different in that respect.

There is no fundamental difference between brazing and soldering; it is primarily historic. The word "braze" is derived from an old English word "braes" meaning to cover with brass. While "solder" is derived from an old french word "soudure" which means to make solid. Based on the historic developments, brazing process is defined as one where the filler melts above 450 C while soldering is where the filler melts below 450 C. But beyond that technically there is no difference.

Answer 2

Brazing involves joining metals by melting and flowing a filler metal into the joint, usually at temperatures above 840°F (450°C). Soldering, on the other hand, joins metals using a lower melting point filler metal (below 840°F or 450°C), typically involving temperatures not exceeding 840°F (450°C). Brazing generally creates stronger, more durable bonds compared to soldering due to the higher temperatures involved.