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Magnets losing magnetism.

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Martin Oxenham

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Post Mon Dec 21, 2009 6:40 pm

Magnets losing magnetism.

I have a friend that I done some vehicle magnets for a while back. He says that he has kept them rolled up for a few weeks while not using the van, but now says they won't stick at all. Has anyone heard of this before ?.
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Soyeb Ravat

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Post Mon Dec 21, 2009 10:42 pm

I have read that this can happen to a rise in temperature. If it gets too hot then the magnets can lose it strength.
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Hugh Potter

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Post Mon Dec 21, 2009 11:55 pm

wouldn't have thought heat would have been an issue recently, maybe cold affects them too?
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Peter Normington

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Post Mon Dec 21, 2009 11:57 pm

its age really, not temperature,
as you get older your magnetism declines.

:D
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Phill Fenton

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Post Tue Dec 22, 2009 12:29 am

I always understood a permanent magnets magnetic field was fixed for life and could not deteriorate. Only electromagnets have a variable magnetic field

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