Help identifying magnetic screening material

405man · 8th September 2005, 07:43 AM

How can I determine what type of material these are made of. I have some sheets of metal removed from high performance 2000 line raster scan radar displays. These were bolted to the inside of the mild steel cover panels. There is a small label attached to each sheet which states “ Knocking Jarring and distorting will destroy the special magnetic properties of this shield “. Are they mumetal or something else. If they are of any value I can recover the rest of them. Each sheet measures about 500 X 800 mm and is about ½ mm thick If anyone is interested in them or has a use for them please let me know, you can have them for the cost of postage.

Stuart

SY · 8th September 2005, 09:07 AM

The warning would sure suggest mu metal- I don't know offhand of any others that are sensitive to being bent or banged.

Magura · 8th September 2005, 01:49 PM

I am quite sure it is mu metal, as I have seen that in radar equipment before.

If the offer to get a piece of the cake is still standing, I would sure love to have 2 of those sheets.

Cheers

Magura

8th September 2005, 07:43 AM	#1
405man diyAudio Member Join Date: Dec 2003 Location: Near Glasgow Scotland	Help identifying magnetic screening material How can I determine what type of material these are made of. I have some sheets of metal removed from high performance 2000 line raster scan radar displays. These were bolted to the inside of the mild steel cover panels. There is a small label attached to each sheet which states “ Knocking Jarring and distorting will destroy the special magnetic properties of this shield “. Are they mumetal or something else. If they are of any value I can recover the rest of them. Each sheet measures about 500 X 800 mm and is about ½ mm thick If anyone is interested in them or has a use for them please let me know, you can have them for the cost of postage. Stuart

8th September 2005, 09:07 AM	#2
SY diyAudio Moderator Join Date: Oct 2002 Location: Austin, TX Blog Entries: 1	The warning would sure suggest mu metal- I don't know offhand of any others that are sensitive to being bent or banged. __________________ “Listening to records is like ****ing a picture of Brigitte Bardot.” - Sergiu Celibidache

8th September 2005, 01:49 PM	#3
Magura diyAudio Member Join Date: Oct 2003 Location: Denmark, Viborg	I am quite sure it is mu metal, as I have seen that in radar equipment before. If the offer to get a piece of the cake is still standing, I would sure love to have 2 of those sheets. Cheers Magura __________________ Everything is possible....to do the impossible just takes a little while longer. www.class-a-labs.com

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