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Date:         Thu, 1 Jul 2004 03:06:17 -0500
Reply-To:     Stan Wilder <wilden1-1@SBCGLOBAL.NET>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Stan Wilder <wilden1-1@SBCGLOBAL.NET>
Subject:      Re: Curious Question (NVC)
Comments: To: "J. Harvey" <jtharvey2@HOTMAIL.COM>
Content-Type: text/plain; charset="iso-8859-1"


That's it Harvey you're off the shuttle project for good this time.
At least you could have plagiarized some proper copy and pasted it as a
reply.


Stan Wilder
www.engineceramics.com
----- Original Message -----
From: "J. Harvey" <jtharvey2@HOTMAIL.COM>
To: <vanagon@GERRY.VANAGON.COM>
Sent: Wednesday, June 30, 2004 1:59 PM
Subject: Re: Curious Question (NVC)




> If you took two identical aluminum alloy castings and then had one cold
> worked (rolled, ect.) the cold worked sample would be much stronger and
less
> ductile.  It would also be less thermally conductive, but not by much, due
> to the huge increase in dislocations which are simply microstructure
> defects.
>
>
> <html><DIV>'85 Silver Sunroof&nbsp;&nbsp;&nbsp;O===O&nbsp;&nbsp; <BR>
> '81 Westy Beater&nbsp;&nbsp;&nbsp;O===O&nbsp;&nbsp; <BR>
> '91 GTi 2.0 8v&nbsp;&nbsp; Oo=oO&nbsp;&nbsp; <BR>'76 BMW 2002&nbsp;&nbsp;
> O=00=O&nbsp;&nbsp; </DIV>
> <DIV>&nbsp;</DIV>
> <DIV>&nbsp;</DIV>
> <DIV>&nbsp;</DIV></html>
>
>
>
>
> &gt;From: John Rodgers &lt;jh_rodgers@BELLSOUTH.NET&gt;
> &gt;Reply-To: John Rodgers &lt;jh_rodgers@BELLSOUTH.NET&gt;
> &gt;To: vanagon@GERRY.VANAGON.COM
> &gt;Subject: Curious Question (NVC)
> &gt;Date: Tue, 29 Jun 2004 14:43:17 -0500
> &gt;
> &gt;I'm not an engineer, but have a question.
> &gt;
> &gt;Cast aluminum has a granular crystal quality in it's structure.
> &gt;Milled
> &gt;Aluminum (hammered, rolled) does not.
> &gt;
> &gt;Of two identical parts, one a machnined aluminum casting, and the
> &gt;other
> &gt;machined in milled aluminum, which would most likely have the best
> &gt;1)
> &gt;strength 2) heat transfer properties.
> &gt;
> &gt;Inquiring minds would like to know!
> &gt;
> &gt;Anybody??
> &gt;
> &gt;Thanks,
> &gt;
> &gt;John Rodgers
> &gt;88 GL Driver
>
> _________________________________________________________________
> Make the most of your family vacation with tips from the MSN Family Travel
> Guide! http://dollar.msn.com
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