The percentage is the percentage of silver content in the rod.
What kind of brazing rod for copper.
This and other detailed information can be found in the welding handbook 8th edition vol.
8 published by the american welding society and available from the copper development.
Dissociated ammonia 75 hydrogen 25 nitrogen can be used for many types of brazing and annealing.
When brazing copper or brass a flux is required to reduce surface oxides protect the base metal during heating and reduce filler metal surface tension.
In case of any doubts harris products does supply a very clear chart on what type of brazing rod to use for various types of materials being joined.
For most brazing jobs using oxygen acetylene gases a carburizing or neutral flame should be.
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Forney 42340 copper coated brazing rod 1 8 inch 5 pound.
Recommended rods by metal type.
Adjust torch flame oxygen acetylene.
When you re brazing you re going to need to heat your lines up until they re basically glowing red.
Use a torch that produces a high intensity flame.
Brazing rods are used in brazing a type of welding that uses acetylene to join metal pieces together.
The brazing rod should be melted by the heat of the metal pieces being joined not by direct contact with the flame of the torch.
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The most commonly used fluxes and brazing filler materials for copper and copper alloys are shown in figure 3 and a guide to their use is shown in figure 4.
The most common rods used for typical hvac brazing are 0 5 and 15 with several other levels mixed in there.
Ammonia aws type 5 also called forming gas.
After brazing maintain support for a few seconds or more depending upon the size of the joint area.
For this demonstration i ll be using a stay silv 15 which contains 80 copper 15 silver and 5 phosphorus.
Brazing is typically used when joining pieces of the same metal type such as steel to steel or copper to copper.
Blue demon bdtp 125 01t triple play low temp aluminum zinc brazing rod 1.
Brazing rods are pieces of metal that melt during the welding process and attach to.
When brazing other metals a separate chemical flux is required.
Get it as soon as fri sep 25.
For brazing copper brass low nickel alloys medium and high carbon steels.
For copper silver copper phosphorus and copper zinc filler metals.
Use the right brazing rod material for the metal used in your project.
For joining copper lines we usually use brazing rods that are made out of a copper phosphorous combination.
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With six percent silver this type of brazing rod starts to melt at 1 190 c.
The only real reason to use lower silver levels is the cost and the difference can have many techs and owners wondering what the difference is.
