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Brinell hardness of Pb/Sn (Read 637 times)

stevens52 Full Member Offline Posts: 226 Location: Fairview,NC Joined: Jun 6^th, 2004	Brinell hardness of Pb/Sn Mar 2^nd, 2025 at 5:08pm	Print Post
	What is the Brinell hardness of 20/1 Pb/Sn ? 30/1 ? Anyone know off the top of your head?


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bpjack Frequent Elocutionist Offline Posts: 3066 Location: East Olympia, WA Joined: May 18^th, 2008	Re: Brinell hardness of Pb/Sn Reply #1 - Mar 2^nd, 2025 at 5:25pm	Print Post
	Google knows all!

	ASSRA # 11318 I haven’t lost all my marbles yet but there is definitely a hole in the bag somewhere.
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rgchristensen Frequent Elocutionist Offline Posts: 1140 Joined: Jan 2^nd, 2014	Re: Brinell hardness of Pb/Sn Reply #2 - Mar 2^nd, 2025 at 8:13pm	Print Post
	Charlie Dell’s book(s) have 20/1 at 7.9 BHN, and 30/1 at 6.7 BHN CHRIS


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bpjack Frequent Elocutionist Offline Posts: 3066 Location: East Olympia, WA Joined: May 18^th, 2008	Re: Brinell hardness of Pb/Sn Reply #3 - Mar 2^nd, 2025 at 9:25pm	Print Post
	Roto Metals lists their 30-1 as being about 9 and 20-1 at about 10

	ASSRA # 11318 I haven’t lost all my marbles yet but there is definitely a hole in the bag somewhere.
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idjeffp Senior Forum Member Offline Posts: 344 Location: Boise, ID Joined: Nov 11^th, 2017	Re: Brinell hardness of Pb/Sn Reply #4 - Mar 3^rd, 2025 at 3:04pm	Print Post
	I keep this chart hanging in my casting area... From the SAECO Hardness tester... JP


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stevens52 Full Member Offline Posts: 226 Location: Fairview,NC Joined: Jun 6^th, 2004	Re: Brinell hardness of Pb/Sn Reply #5 - Mar 3^rd, 2025 at 4:11pm	Print Post
	Good help and thanks to each of you.


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rgchristensen Frequent Elocutionist Offline Posts: 1140 Joined: Jan 2^nd, 2014	Re: Brinell hardness of Pb/Sn Reply #6 - Mar 3^rd, 2025 at 9:37pm	Print Post
	Since the Brinell hardness is so sensitive to component purity, it’s really important, if you are going to rely on it, to measure it directly. Making it up from recipes is NOT reliable, as can be deduced from the data offered. Not that hard to build a tester, using a weight and a compound lever. CHRIS


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BudHyett Senior Forum Member Offline Posts: 275 Location: Pacific Northwest, WA State Joined: Jun 25^th, 2011	Re: Brinell hardness of Pb/Sn Reply #7 - Mar 3^rd, 2025 at 10:24pm	Print Post
	idjeffp wrote on Mar 3^rd, 2025 at 3:04pm: I keep this chart hanging in my casting area... From the SAECO Hardness tester... JP Over the years, I've found the SAECO Hardness Tester with this chart to give reliable readings. I have also checked this approach against a Brinell Hardness Tester at work and the drawing pencil method. They all concur within a few decimal points. In all cases, this is as much art as science. With the SAECO, be sure the point is testing against a broad flat surface even if you have to file the bullet's point down. With the lead pencils, be sure the pencil has a very sharp point for repeatable results. Finally the SAECO Hardness Tester after four decades froze at a 5.3 reading. When I sent it in for repair, SAECO sent me a new one as a replacement.
	« Last Edit: Mar 4^th, 2025 at 11:41am by BudHyett »
	Country boy from Illinois living in the magical Pacific Northwest
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Oleblacksmith Participating Member Offline Posts: 29 Joined: Jan 10^th, 2024	Re: Brinell hardness of Pb/Sn Reply #8 - Mar 4^th, 2025 at 7:52am	Print Post
	I use both Saeco and cabin tree lead hardness testers. I sent the Saeco tester back for recalibration and now find that testing results are always within a few decimal points of each other. If I were to only have one tester it would be the cabin tree. Its much easier to use plus you can use it to test all sorts of odd shaped pieces of lead alloy. To acquire a cabin tree tester you have to join Desperado Cowboy Bullets.


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