Do you need flux when brazing copper?

Do you need flux when brazing copper?

Remember that copper to copper brazing does not require a flux. Here are a few common combinations: Using Stay-Brite® Solder – Stay-Clean® Soldering Fluxes.

Which solder is best for joining copper tubing?

Buy lead-free solder that’s designed for copper water pipes; you’ll find it in the plumbing section of the store. Solder with lead is still available, but the lead can leach into your water supply, so don’t use it.

What are the typical gases used for brazing copper tubing?

For most brazing jobs using oxygen-acetylene gases, a carburizing or neutral flame should be used. The neutral flame has a well-defined inner cone See diagram. Avoid an oxidizing flame. Excess acetylene removes surface oxides from the copper.

Can you braze copper with a propane torch?

You’ll use a torch for brazing just as for soldering. Because brazing involves higher temperatures than soldering, using an oxygen-acetylene torch is your surest bet because this gets hotter than a MAPP gas or propane torch, although for most small-to-medium jobs (thinner copper piping) a turbo torch should also work.

Can I use MAPP gas to braze copper?

We use MAPP gas with a shield attached it is quite good up to 7/8 copper tube only and the braze joint needs to be away from any large mass of metal as the heat can be drawn away just as fast as you apply it.

Can a propane torch be used for brazing?

Brazing permanently joins two metals using a torch. You can use a propane torch to braze most metals you want to join. Propane torches are widely available in your local hardware stores, plumbing supply houses as well as at metalsmith and jewelry supply companies.

Is Mapp gas hot enough to braze?

Is Mapp gas hot enough to braze? Genuine MAPP gas can be used in combination with oxygen for heating, soldering, brazing and even welding because of its high flame temperature of 2925 °C (5300 °F) in oxygen. Hard soldering (silver soldering) requires temperatures of about 1200 to 1400 degrees F.

Can I braze copper with a propane torch?

Here is the answer to whether you can braze with a propane / air torch. You can but you have to control the environment so that the heat loss to the atmosphere and parts is lower than the heat being put into the braze joint. It is a standard braze alloy that melts over a range of 1250 – 1305 F.