Hi Eyad,
I work on SiO2 ,W and AlN but the generalised formula for acoustic impedance
for a plane wave (T or L) is: sqrt(cii *density) where cii is elastic
coefficient (N/m2)
SiO2 = 13e6 N.s/m3
W = 100e6 N.s/m3
AlN = 37.164e6 N.s/m3
A good referenec would be Acoustic fields and waves in solids by B.A. Auld.
Properties of material are listed, the acoustic impedance can be found by
using the above formula.
bye
Sushant
Sushant Salgar
Research Assistant,
Center for Solid State Electronics Research,
Electrical Engineering Department,
Arizona State University.
----- Original Message -----
From: "eyad Batarseh" 
To: ; 
Sent: Tuesday, November 06, 2001 7:47 AM
Subject: Acoustic impedence of steel


>
> Hi,
> I am a PhD student in UCF i did a search on the net
> and your name appeared.
> I would be grateful if you could give me the acoustic
> impedence for stainless steel.
> I would also like to know a reference book that would
> give me the acoustic impedence of materials in
> general.
> Thank you,
>
> Eyad Batarseh
> Find a job, post your resume.
> http://careers.yahoo.com