mu-metal discoloration and cleaning

johnferrier · 01:40 PM

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.

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.

.

DF96 · 17th March 2011, 01:39 PM

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.

johnferrier · 17th March 2011, 01:50 PM

Quote:

Originally Posted by DF96

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.

.

rfj5106 · 9th January 2012, 06:12 PM

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.

17th March 2011, 01:37 PM	#1
johnferrier diyAudio Member Join Date: Sep 2003 Location: WA	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. 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. . __________________ Michael Gazzaniga - "The arts are not frosting but baking soda." Last edited by johnferrier; 17th March 2011 at 01:40 PM.

9th January 2012, 06:12 PM	#4
rfj5106 diyAudio Member Join Date: Mar 2006 Location: Richmond, B.C CANADA	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. __________________ Richard Jenkins

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17th March 2011, 01:39 PM	#2
DF96 diyAudio Member Join Date: May 2007	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.