RMR has a lead bismouth alloy 98% lead 2% bismouth BHN 12 would like to add tin to harden the alloy question how much tin to increase to equal No 2 alloy. Planing on getting 100 lbs. Lead calculator too confusing for me to use.
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RMR has a lead bismouth alloy 98% lead 2% bismouth BHN 12 would like to add tin to harden the alloy question how much tin to increase to equal No 2 alloy. Planing on getting 100 lbs. Lead calculator too confusing for me to use.
Last edited by DocSavage; 05-10-2020 at 07:11 AM.
I'm not sure many have tried that particular combination of metals in a boolit alloy, so I don't know if there is data or a formula that would help. Still, this is the place to find folks who tinker and think outside the box, so maybe somebody will offer their experiences.
Otherwise, maybe start with a pound or two, some tin and a hardness tester, and find out for yourself?
May have come up with the answer on my own,I have linotype and plumbing solder on hand. 3 to 4 parts lead to one part lino should give me a fairly hard alloy very close to Lyman no 2. Lead and bismuth are very similar in properties 82 and 83 on the periodic table.
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