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(Moderator:
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Determining the purity of Lead
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Topic: Determining the purity of Lead (Read 2514 times)
Will Ketchum
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Pete Ersland
Determining the purity of Lead
«
on:
May 23, 2007, 12:02:32 pm »
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Do any of you have a simple way for me to determine just how soft some lead I have is?
I have access to a bunch of lead bricks some are marked as low level radiation shielding lead. I have a plumber's ingot and with the old thumbnail scratch test these bricks seem as soft as that.
Also what is the going price for lead?
Will Ketchum
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Will Ketchum's Rules of W&CAS: 1 Be Safe. 2 Have Fun. 3 Look Good Doin It!
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Delmonico
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Re: Determining the purity of Lead
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Reply #1 on:
May 23, 2007, 12:44:02 pm »
Will I keep some of the crayon point type 32 Lee bullets around cast out of known alloys and see how soft I can go with out making a mark on the ingots, but any bullet should work. With that said I am 99% sure what you have is pure lead.
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Re: Determining the purity of Lead
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Reply #2 on:
May 23, 2007, 02:54:32 pm »
Will,
A way that will give you a "relative" hardness to a known sample is to take ingots of both the known and unknown samples and with a steel ball bearing between them compress them in a vice or arbor press until there is a measurable indentation in both. By measuring the diameters of each indentation you can get a "relative" hardness of one to the other. The softer will have the larger indentation. I usually use a 1/2" - 3/4" diameter ball bearing.
HHW
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Will Ketchum
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Pete Ersland
Re: Determining the purity of Lead
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Reply #3 on:
May 23, 2007, 03:57:13 pm »
HHW, thanks for the tip......I don't think I have any ball bearings around but I guess any piece of steel would do the same thing.
Will Ketchum
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gw
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Re: Determining the purity of Lead
«
Reply #4 on:
May 25, 2007, 06:56:39 am »
Will---Send me about 1/2 a bullet and I'll get you the exact composition of what you have. This is part of what we do where I work, I know the operator of the equipment quite well and it won't be a problem. If you need my address, PM me.
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Will Ketchum
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Pete Ersland
Re: Determining the purity of Lead
«
Reply #5 on:
May 25, 2007, 09:16:38 am »
GW, thanks for the offer. I may take you up on it later. The lead is in bricks just a little bigger than a building brick. Each weighs about 50#s.
Will Ketchum
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Delmonico
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Re: Determining the purity of Lead
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Reply #6 on:
May 25, 2007, 12:06:04 pm »
When you do Will, report back, I'm curious.
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Mongrel Historian
Always get the water for the coffee upstream from the herd.
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Will Ketchum
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Pete Ersland
Re: Determining the purity of Lead
«
Reply #7 on:
May 28, 2007, 05:37:51 pm »
A good friend of mine has a bullet casting business. He tested it for me and said it was pure lead
I have no idea what lead is going for now but I have nearly 600 pounds.
Will Ketchum
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gw
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Re: Determining the purity of Lead
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Reply #8 on:
May 29, 2007, 05:59:15 am »
Will, that oughta last you the rest of the year!!
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Quincy1
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Re: Determining the purity of Lead
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Reply #9 on:
May 29, 2007, 06:22:29 pm »
Pure lead in small quanity in Bay Area is .75 - 1.00 Lb Depends who is working
counter at the Steel yard.
I have a friend up in N. Ca and he bought 5,000 Lb for a sailboat keel and paid .35 - .40 a lb. delivered.
Quincy
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Re: Determining the purity of Lead
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Reply #10 on:
June 11, 2007, 09:31:11 pm »
That'll keep ya in business fer a while, Will.
Slim
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Re: Determining the purity of Lead
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Reply #11 on:
August 05, 2007, 06:40:11 pm »
Yep...that 600m lbs. oughta last you a day or two.
I've the Saeco Lead Hardness Tester by Redding that I use to test lead...course a bullet has to be cast in order to do it.
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boot strap jack
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Re: Determining the purity of Lead
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Reply #12 on:
November 17, 2007, 07:36:00 pm »
I have been gone running the nuke circuit this past fall. Yes the lead you are using is pure.
Jack
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