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brazing vs. silver solder
Rod Bixler
Member Posts: 7
We where wondering what pressures a brazed joint can hold compared to a silver soldered one????
0
Comments
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It Depends -
but are you asking the difference between soft solder and silver solder? Silver solder or brazing is often considered the same - and then lastly - which materials are you joining? For copper to copper; it depends on operating pressure, working temperature and size of pipe.0 -
rbix@cvn.net
brazing is done at a much higher temperature than silver soldering. So much so that you need to use nitrogen flowing through the tubing to prevent oxidation or flaking inside the tubing. We where talking about joining copper refrigerant lines and the pressures that the two different joints could with stand.0 -
According to one resource
Brazing alloys above 1000 deg F:
to 1 inch - 350 deg @ 270 psi
to 2 inch - 350 deg @ 190 psi
to 4 ich - 350 deg @ 150 psi
(IPT Pipe Trades Manual)
The manual lists temp/pres charts to 12 inch copper tube.0 -
pressure
Hi guy's,Here's my slang from neumerous sources.800* and lower is sometimes called solder,soldering,soft solder,silver solder,Silver bearing soft solder,StayBrite,and" The one on the roll " and" Not the stick stuff"and I'm sure there are others.And for above 800* it's brazing,hard solder, silver braze and the stick stuff.The tensile strength of 15% silphos is 86,000psi and the tensile strength of Stay-Brite is 15,000psi.The tube burst strength of the copper and the fitting drops from 3,800psi down to 1,800 psi by brazing,not so for soldering.0
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