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January 3, 2012, 10:46 PM | #1 |
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Join Date: October 7, 2008
Location: Magnolia, AR
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picked up some lead alloy, need identification
I picked up some bars of lead alloy a few weeks ago while cleaning out an old garage. some of the bars are marked "National Lead 666", a few are marked MF 50/50, and some Kester 30/70. I did google and found the 666 was 39% tin, 1% antimony, and 66% lead. I could not find anything about he others, I assume the 50/50 is half lead half tin? What is the 30/70? 30 tin, 70 lead?
Any help is appreciated. DavidAGO |
January 3, 2012, 10:58 PM | #2 |
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Join Date: December 23, 2008
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From my research Kester is a solder company. I would guess your assumptions are correct, but with one little correction in your math:
National lead's 666 alloy was 39% tin, 1% antimony, and 60% lead But we knew what ya meant Did you find any 111 markings on the 50/50 stamped bars. Supposedly that was National lead's marking for their 50/50 alloy (lead to tin)?
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January 6, 2012, 07:55 PM | #3 |
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30/70 (30% tin, 70% lead), was the alloy used in the early 60's to fill car bodies (pre-bondo), to make "lead sleds".
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