Computer Estate( and collecting)

From: Joe R. <rigdonj_at_cfl.rr.com>
Date: Mon May 17 14:58:39 2004

At 02:05 PM 5/17/04 -0400, you wrote:
>> 63/37 is the optimal tin/lead alloy; its melting point is a little
>> lower than 60/40 alloy.
>
>I thought the reason 63/37 (or whatever the precise ratio is - I think
>it's something like 63.7/36.3, no?) was preferred was that it had a
>melting _point_ rather than a melting _range_. (Whether this is tied
>to its being the eutectic mixture is something I'm not enough of an
>alloy scientist to know.)


  63/37 has the lowest melting point and the lowest or close to lowest
"plastic" range. The Lyman books on bullet casting have some good
explanations and charts on this.

   Joe
Received on Mon May 17 2004 - 14:58:39 BST