Carl,
when  I was active I used to contact  SemiAlloys. I needed certain
resistivity in lids for resistivity pulsed current seam welding of small
packages for missiles. We produced about 50,000  pcs from SemiAlloys with
He/Kr10 exp -10 with succcess.  Mike Fenner has more to say , I think..
They are  extremly nice to cooperate with. Mike as well, despite
he is english.

Semi Alloys Inc

888 S Columbus Ave

Mount Vernon, NY 10550

(914) 664-8318)



Good Luck / Inge


On 7 August 2016 at 05:40, Carl Van Wormer <[log in to unmask]>
wrote:

> I usually want my physical structural resistances to be as low as possible
> (conductors) or as high as possible (insulators).  Now I need an
> intermediate resistance, probably in the range of 100 to 1000 Ohms per
> square.  The application will be an electrostatic shield in an alternating
> field, hopefully balancing magnetic heating losses against capacitive
> shielding effectiveness.
> I have never seen these materials offered from any of my normal sources,
> but I’m sure that there is something out there that will work.  It could be
> sheet materials, paints, or slightly conductive epoxies, or something else
> I haven’t thought of.  Since there is a very wide experience base on this
> site, I’m asking here first.
> Any suggestions will be appreciated.
>
> Thanks,
> Carl
>
>
> ​​​​​
>
> Carl B. Van Wormer, P.E., AE7GD
> Senior Hardware Engineer
> Cipher Engineering LLC
>     21195 NW Evergreen Pkwy Ste 209
>     Hillsboro, OR  97124-7167
>     503-617-7447x303
>     [log in to unmask]<mailto:[log in to unmask]>
> http://cipherengineering.com<http://cipherengineering.com/>
>
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