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Measuring Lead Hardness... (Read 14362 times)

old7groove Junior Member Offline Posts: 81 Location: San Diego Joined: Jul 6^th, 2016	Re: Measuring Lead Hardness... Reply #30 - Aug 4^th, 2016 at 9:30pm	Print Post
	Some confusion seems to arise from how the lead alloy ratios are stated. For instance, 1/20 would be 5% tin whereas 20/1would be 20 parts lead to 1 part tin. In the 70's I had a smelter in Chicago blend 1/20 alloy for me, they referred to it as 95%/5%. Those were the days .50 cents per pound in 1000lb lots. In my opinion whether the alloy is 5% tin or 5.26% tin don't amount to a hill of beans.


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marlinguy Frequent Elocutionist Offline Ballards may be weaker, but they sure are neater! Posts: 18070 Location: Oregon Joined: Feb 2^nd, 2009	Re: Measuring Lead Hardness... Reply #31 - Aug 4^th, 2016 at 9:30pm	Print Post
	My head is starting to hurt. I better keep on casting, and forget about testing hardness.

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shovel80 Oldtimer Offline Posts: 896 Location: Sonora,CA Joined: Jun 6^th, 2011	Re: Measuring Lead Hardness... Reply #32 - Aug 4^th, 2016 at 9:49pm	Print Post
	old7groove wrote on Aug 4^th, 2016 at 9:30pm: Some confusion seems to arise from how the lead alloy ratios are stated. For instance, 1/20 would be 5% tin whereas 20/1would be 20 parts lead to 1 part tin. In the 70's I had a smelter in Chicago blend 1/20 alloy for me, they referred to it as 95%/5%. Those were the days .50 cents per pound in 1000lb lots. In my opinion whether the alloy is 5% tin or 5.26% tin don't amount to a hill of beans. That makes Sense...20/1 VS. 1/20..I use 20/1 Terry

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Schuetzenmiester Frequent Elocutionist Offline Posts: 6707 Location: Cool Wet Side of WA Joined: Apr 27^th, 2008	Re: Measuring Lead Hardness... Reply #33 - Aug 4^th, 2016 at 9:52pm	Print Post
	Doubt if it matters much, but 19 lead and 1 tin is 5%. 20 & 1 is 4.2%

	"some old things are lovely, warm still with life ... of the forgotten men who made them." - D.H. Lawrence
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old7groove Junior Member Offline Posts: 81 Location: San Diego Joined: Jul 6^th, 2016	Re: Measuring Lead Hardness... Reply #34 - Aug 4^th, 2016 at 10:10pm	Print Post
	SM you are correct


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Marlene Senior Forum Member Offline Posts: 276 Joined: Oct 30^th, 2015	Re: Measuring Lead Hardness... Reply #35 - Aug 4^th, 2016 at 10:34pm	Print Post
	I dunno about y'all arguing over math, but I found a video explaining the pencil test method. (You need to *Login* or *Register* to view media files and links)


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BP Frequent Elocutionist Offline Posts: 8039 Location: Westside Joined: Aug 27^th, 2006	Re: Measuring Lead Hardness... Reply #36 - Aug 4^th, 2016 at 10:54pm	Print Post
	I still use a pencil for math now and then.

	There are three kinds of men: The ones that learn by reading, the few who learn by observation, and the rest who have to pee on the electric fence and find out for themselves. Proud Noodlehead
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bpjack Frequent Elocutionist Offline Posts: 3799 Location: East Olympia, WA Joined: May 18^th, 2008	Re: Measuring Lead Hardness... Reply #37 - Aug 4^th, 2016 at 11:25pm	Print Post
	I keep a 6B drawing pencil in my glove box. If it scratches the lead easily it is soft enough for me. Jack

	People who think they know everything are a great annoyance to those of us who do.
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Schuetzenmiester Frequent Elocutionist Offline Posts: 6707 Location: Cool Wet Side of WA Joined: Apr 27^th, 2008	Re: Measuring Lead Hardness... Reply #38 - Aug 4^th, 2016 at 11:30pm	Print Post
	old7groove wrote on Aug 4^th, 2016 at 10:10pm: SM you are correct Figures don't lie

	"some old things are lovely, warm still with life ... of the forgotten men who made them." - D.H. Lawrence
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