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Author: Subject: Coolant pipes
roadrunner
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posted on 26/11/12 at 07:24 PM Reply With Quote
Coolant pipes

I've got some 1" diameter Ali (i think) curtain poles that I can get from work for nothing.
How can I test that it is ali. It's light weight but with a polished finish, and it files real easy.

Brad.
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b3ngy
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posted on 26/11/12 at 07:39 PM Reply With Quote
With a magnet, aluminium is a non ferrous metal so should be non magnetic.
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minitici
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posted on 26/11/12 at 07:39 PM Reply With Quote
If it fizzes when you put it in a concentrated solution of Sodium Hydroxide it is probably an Aluminium Alloy
(gives off Hydrogen).
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jacko
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posted on 26/11/12 at 07:42 PM Reply With Quote
Brad it will be alloy on caravans but make sure it dose not gave a split down the length
Graham
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roadrunner
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posted on 26/11/12 at 07:44 PM Reply With Quote
Cheers fellas.
Can't believe I didn't think of the magnet test.

Brad.
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minitici
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posted on 26/11/12 at 07:44 PM Reply With Quote
You could try dropping a very strong magnet down the tube and see if the eddy currents slow the fall of the magnet.


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Xtreme Kermit
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posted on 26/11/12 at 07:53 PM Reply With Quote
That's very cool...
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