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Re: material of HDs?

Adalbert Goertz wrote:
> 
> What is the material (alloy) used for HD or CDs?
> Is there any nickel, cobalt in it?

Of course not!  Nickel and Cobalt are both para-magnetic materials, and they
would interfere with the action of the read/write heads.

The platter in a Hard Disk is made of aluminum alloy.

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