Re: solder
- From: Norm Johnson <nfjohn@xxxxxxxxx>
- Date: Fri, 31 Mar 2006 12:23:50 +0000 (UTC)
#I was recently given about 30 pounds of bar solder. A friend of mine
#works for a company that exports to Europe and the Europe has banned
#lead solder (or so the local electronics supply says.)
#
#Anyway I'd like to use this to harden up about 150 or so pounds of more
#or less pure lead that I have for casting bullets. I will mostly be
#casting slugs for my 1911 and my .357 mag. I will also be casting a few
#rifle bullets (with gas checks.)
Tony,
Using tin to harden lead is neither effective nor economically
justified. Antimony is much more efficient and much less
expensive. Some trivia:
Lyman No. 2 alloy
Either
1. Nine pounds wheel weight metal plus one pound 50-50 solder.
-or-
2. Four pounds Linotype, one pound 50-50 solder, and five pounds wheel weight
metal.
Alloy Lead Tin Antimony BHN
Wheelweights 95.5% 0.5% 4% 9
Linotype 86% 3% 11% 22
84% 4% 12% 22
(depending on who you believe)
#2 Alloy 90% 5% 5% 15
Note that the two mixes do not calculate to exactly 90 Pb, 5 Sn, 5 Sb, but I
guess that Lyman figures that they are close enough.
Lead-Tin alloys BHN
Pure lead 5
40-1 8.5
20-1 10
16-1 11
10-1 11.5
Wheel weights with about 2% tin added makes an excellent all-round
bullet metal.
God Bless!
Norm
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