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Galvanic corrosion between brass component and aluminum conductor


We manufacture terminal blocks. I have a brass contact wherein aluminum conductor/ wire shall be tightened using brass (CuZn37) screws. Will galvanic corrosion occur between brass and aluminum. Will tin plating on brass prevent galvanic corrosion?
Zankar Desai


It depends. If the Aluminium parts are much larger than the screws then it may take a long time for the corrosion to spread; but if the parts are evenly sized then it may be sooner. Yes, tin or zinc will reduce the speed of galvanic corrosion.
Khozem Vahaanwala
Khozem Vahaanwala
Saify Ind
supporting advertiser
Bengaluru, Karnataka, India
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September 11, 2009

I have to replace all my brake lines. They don't sell them any more for my car. It's going to be very difficult with all the bends and turns. I thought I could use aluminum tubing and maybe some would short connected with a brass fitting.
How long do you think this will last before it's corroded enough be on use?
Kenneth Granby

August 4, 2010

Aluminum is not legal to use for brake lines. it will not stand the needed pressure.
Doug Holland

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