How to Weld Brass to Copper
Brass and copper are similar metals that are commonly used in household objects. Because of their shiny patina and antiseptic qualities, they are both decorative and sanitary. Welding brass to copper involves a process called brazing, which uses a filler metal, typically an aluminum coil, that is placed between the copper and brass. The filler metal is then heated at a lower temperature than standard welding to join the two metals together.
Things You'll Need
- Copper
- Brass
- Aluminum filler metal
- Brazing torch
- Clamp or vice
- Brazing flux
- Safety goggles
- Leather gloves
- Leather apron
Instructions
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1
Coat the brass and copper with a layer of brazing flux solution at the site where the two metals will be joined together. Brazing flux removes contaminants from the metals and guarantees a strong joint.
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2
Place the filler metal between the brass and copper at the site of the joint. Wrap the filler metal around the brass or copper if possible to secure the connection.
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3
Secure the copper and brass together, with the filler metal in between, using a clamp or vice.
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4
Put on leather gloves and a leather apron to protect hands and body, as well as safety goggles to protect your eyes. Turn on your brazing torch. Adjust the flame so that it is long enough to reach the copper and brass while keeping your face and body at a safe distance. The inner portion of the flame should not come into contact with the metals being welded.
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5
Apply the flame to the copper first, being sure to keep the inner portion of the flame from touching the metal and overheating it. Move the flame a few times over the copper as the filler metal begins to melt.
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6
Apply the flame to the brass, passing it near the joint and filler metal a few times, allowing the filler metal to melt and join with the brass.
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7
Repeat Steps 5 and 6 until all of the filler metal has melted. This will generally take a couple of passes over the brass and copper, though it depends on the thickness of your metals.
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8
Allow the metal to cool for several minutes before attempting to remove the clamp or vice.
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Tips & Warnings
Always wear safety goggles when welding to prevent injury to your eyes. Wear leather gloves and a leather apron to protect your hands and body.
