Monotype, Ludlow type, Foundry type?

[cali4088]

Any suggestions? I have around 300 lbs of this stuff. Some are extremely tiny and as thin as a piece of straw and some more than a square inch block. 93756
93757

[cali4088]

Couldnt get smaller picture to get larger but thats a penny next to it to compare size.

[Jack Stanley]

Using it to harden softer lead is the first thing that comes to mind . Perhaps you have some pure lead you'd like to use for more than muzzle loader projectiles . Depending on what you want to cast I think it would be good for faster rifle bullet loads , you could get about any hardness you want .

Jack

[cali4088]

Hey Jack, Yes, I know its to harden ammo. I am just trying to get an estimate on its hardness. I am hoping someone could possible tell by the notches on the bottom and the size of the letterpress. It could vary drastically. I have like 2,000 lbs of already hardened lead, and in addition2 -60lbs ingots of what seems like 50/50% antimony/lead.

[captaint]

Sounds like you have Monotype. I have a bunch of it myself. There is the "Bumpo alloy calculator" that will tell you the hardness of the mono and how to mix it to get the desired hardness for your application. Mike

[Iron Mike Golf]

Might be a mix of monotype and foundry type. When sorting mine, I'll take a piece and drop onto concrete. Foundry "rings" a higher pitch. I'll set up the Lee hardness tester later and measure. This chart (http://www.lasc.us/CastBulletAlloy.htm) shows monotype at 28 BHN and ? for foundry type.

I had thought it was all monotype, but found when I used the pieces with the half-round notches in the back, I'd get too much Sb in the melt and it would tend to separate out. Since I started sorting like I said above, that problem went away.

[MarkP]

My neighbor who was in the printing bussiness ever since he was a child identified my stash that looks identical to your sample as foundry type. I think it is 62% PB, 15% Sn, 23% Sb. May have some Cu. I made a spreadsheet to estimate various ratios of Foundry, lino, shot, pure, ect. Screen shot show below:
93784

[cali4088]

Thanks jeff. Unfortunatley I dont think ill be sorting these. I have around 300 lbs that is all mixed together. I probably estimate there being around 100,000 pieces alltogether, big small micro. The smaller ones do not have notches

[cali4088]

My neighbor who was in the printing bussiness ever since he was a child identified my stash that looks identical to your sample as foundry type. I think it is 62% PB, 15% Sn, 23% Sb. May have some Cu. I made a spreadsheet to estimate various ratios of Foundry, lino, shot, pure, ect. Screen shot show below:
93784


Thanks Mark!

[David2011]

The very large stuff is most likely Foundry Type, BNH around 30 with 15% tin, 23% antimony, 62% lead. Monotype is small, body text sized inividual letters. BNH is 28 with 9% tin, 19% antimony, 72% lead.

David

[cali4088]

The very large stuff is most likely Foundry Type, BNH around 30 with 15% tin, 23% antimony, 62% lead. Monotype is small, body text sized inividual letters. BNH is 28 with 9% tin, 19% antimony, 72% lead.

David

Thanks David!

BTW, Nice name!

-Regards,
David

[MaryB]

that little round notch that gives it a "foot" makes it foundry type. The spacers could be softer though. Foundry type left, monotype right

http://i226.photobucket.com/albums/dd248/maryalanab/2013-07-18_01-29-37_824_zpsba4918b9.jpg

[cali4088]

Mary, what if it scratched with a knife fairly easy? You know not all foundry lead has a specific alloy %. Ive seen on the internet probably 10 different %'s for foundry lead.

[meeesterpaul]

http://mpxrfscanresults.smugmug.com/