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Old 17th March 2011, 01:37 PM   #1
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Default mu-metal discoloration and cleaning

So, a few sheets of Ultraperm 80 arrived yesterday and I notice that it's discolored. Not a big deal as it's used inside an enclosure, but it's still unattractive. It appears as a rust color film across ~ 30% of the surface.

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Although the color appears embedded, I may just clean the surface for a coat of silver color paint. I wonder if anyone has experience cleaning mu metal.


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Last edited by johnferrier; 17th March 2011 at 01:40 PM.
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Old 17th March 2011, 01:39 PM   #2
DF96 is online now DF96  England
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I think mu-metal is best left as it is. Even bending it reduces its properties, so I can imagine that sanding the surface could disrupt things too.
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Old 17th March 2011, 01:50 PM   #3
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Quote:
Originally Posted by DF96 View Post
I think mu-metal is best left as it is. Even bending it reduces its properties, so I can imagine that sanding the surface could disrupt things too.
I'll simply clean it with a degreaser and use it flat. Thanks.


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Old 9th January 2012, 06:12 PM   #4
rfj5106 is offline rfj5106  United States
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Default ultraperm 80--is it effective?

I have seen this stuff advertised but have wondered about its effectiveness. I am about to build an op-amp pre-amp with a phono section. How would I use this stuff in this application? Any advice would be appreciated! Thanks.
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