17 May
2004
17 May
'04
3:58 p.m.
At 02:05 PM 5/17/04 -0400, you wrote:
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
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.)