Talk:Mu-metal

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I'd have to say that Monster Magnet is my favourite... oh, sorry. -Ashley Pomeroy 20:03, 21 August 2005 (UTC)

[edit] More info please

How thick of a sheet of mu-metal would be needed to block an average magnet? Is it feasible to wrap a drawer with mu-metal to protect magnetic tapes? Can you bend and mold mu-metal? There is very little information about the use of mu-metal in this article. --Kainaw ^(talk) 21:08, 8 December 2005 (UTC)

I have very little experience in actually working with Mu Metal, since all of my stuff is built for me, but I'm under the impression that it is not easy to work with in terms of bending and molding (I believe it's a laminate of many thin layers of slightly different nickel-iron alloys, but I could very well be wrong there). As for thickness, it doesn't take very much: a ~1/16" thick full enclosure will probably attenuate fields by a factor of 100 or so. However, it is a very expensive metal to wrap a drawer in. For less stringent shielding, several companies sell a "foil" version that can be bent. What sort of "average" magnet do you need to protect your tapes from? Most fridge magnets can't harm magnetic media beyond a few centimetres, but if you happen to live beside a quaintly unshielded NMR magnet... Potatophysics 15:40, 15 February 2006 (UTC)