[SI-LIST] Re: material information

Did you try the Dupont Website, they have some detials on polymide materials. 
As for tungsten, this can easily be found with a web search.

http://hypertextbook.com/facts/2004/DeannaStewart.shtml

Regards

John

yamma1106@xxxxxxxxx wrote:
> Hello, All. 
>  
> For modeling using HFSS, 
> I'm looking for information about some materials. 
>  
>  - tungstem <<W>> :  electrical conductivity 
>  - polyimide : dielctric cnstant, loss tangent 
>  
> I want to do modeling of the Needle on Probe Card in Test Industry. 
>  
> Thanks for any information. 
> YS Shin
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