scythe wrote:I will have to disagree with you there bundaboy.
That's ok because I actually agree with you because that's the way I was taught, HOWEVER!
I recently had a huge online argument over this and, whilst not totally vanquished, I certainly came off second best.
"The basic difference between soldering and brazing is the temperature necessary to melt the filler metal. That temperature is defined to be 842ºF/450ºC by the American Welding Society (AWS) but is often rounded to 840ºF. If the filler metal melts below 840ºF the process being performed is soldering. Above that temperature, the process is brazing."
Now I was hoping that is just another example of the crazy yanks being different to every one else for pure spite but I am fairly sure I came across the same definition in some of my British metal working references, if I didn't it certainly wasn't contradicted. A lot of references just say that brazing is similar to soldering but requires higher temperatures - a definition that is worse than useless.
With regards to welding, the situation is even worse. MY definition of welding is that is the same as brazing and soldering (requires a filler and flux) BUT involves the melting of the work pieces - again temperature dependent (not including spot welding and other variants).
ALAS! The definition of brazing includes the term welding so I was beaten down there as well (shakes head).
If need references to any of that I can get them (I spent hours on it trying to disprove it) but I would prefer you didn't ha ha.
If you can give references that contradicts the above I would be eternally grateful and will wade back into the battle fully armed.
Certainly, however, in my experience the process of soft soldering and hard soldering is so similar as to warrant no differentiation, results and costs are, of course, another matter entirely.