Date:         Tue, 29 Jun 2004 13:33:44 -0700
Reply-To:     Aristotle Sagan <killer_jupiter@HOTMAIL.COM>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Aristotle Sagan <killer_jupiter@HOTMAIL.COM>
Subject:      Re: Curious Question (NVC)
Comments: To: jh_rodgers@BELLSOUTH.NET
Content-Type: text/plain; format=flowed

I am an engineer, compooter though, so purely a guess eminating from the dim
reaches of Chemestry101. The thermal qualities should be the same, the
strength qualities should be radically different from the process of
manipulating the billet in the rolling and tempering processes the AL
undergoes.

I think the heat transfer should be the same as you have not changed the
electron structure of the material, just how it's aligned.

tim in san jose


>From: John Rodgers <jh_rodgers@BELLSOUTH.NET>
>Reply-To: John Rodgers <jh_rodgers@BELLSOUTH.NET>
>To: vanagon@GERRY.VANAGON.COM
>Subject: Curious Question (NVC)
>Date: Tue, 29 Jun 2004 14:43:17 -0500
>
>I'm not an engineer, but have a question.
>
>Cast aluminum has a granular crystal quality in it's structure. Milled
>Aluminum (hammered, rolled) does not.
>
>Of two identical parts, one a machnined aluminum casting, and the other
>machined in milled aluminum, which would most likely have the best 1)
>strength 2) heat transfer properties.
>
>Inquiring minds would like to know!
>
>Anybody??
>
>Thanks,
>
>John Rodgers
>88 GL Driver

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