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Reply #5: What you want is MuMetal [View All]

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Mopar151 Donating Member (1000+ posts) Send PM | Profile | Ignore Mon Jul-27-09 09:59 AM
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5. What you want is MuMetal
I worked for a magnetic shielding company (temp) for a few months. MuMetal is ~ 20%iron, 80% nickel, and works like Stainless Steels evil twin. And you need to anneal it in a hydrogen furnace - known as "The Hindenburg" at the shop I was in.
For a radio, you'd want an instrument case, which would be fairly easy- not cheap, tho. A hat would be pretty difficult, mostly because of the (hydroform) tooling - you would need a different (hardened A2) tool steel "head" for each size.
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