Alloy ratio vs. hardness

[chuebner]

I hope this is the right place to post this but I'm trying to find a chart or table correlating alloy ratio to lead hardness. Say an alloy of 20:1 or 25:1 would equate to what BHN hardness.

charlie

[Old Ironsights]

I dunno, but when I get around to it I will be doing just that for ww/pb blends...

[462]

This should do it, just scroll down a bit and look in the right hand side of the page, then bookmark it as it contains a plethora of useful information.: http://www.lasc.us/CastBulletNotes.htm.

[randyrat]

OR http://www.lasc.us/CastBulletNotes.htm

[10mmShooter]

Chuebener

95-5 Pb-Sn is approx 10 BH
96-4 Pb-Sn is approx 9

according to Rotometals they have various alloys and list BH

http://www.rotometals.com/Bullet-Casting-Alloys-s/5.htm

[chuebner]

Thanks for the info guys. Certainly a lot of information to digest.

charlie

[Buckshot]

..............If you know the hardness of your doner alloys you can use this simple formula. It works for any concoctions you may have on hand.

Assume pure lead @ 5 bhn
Assume WW alloy @ 11 bhn
Assume Linotype @ 22 bhn

One WW and one Lino would be: 11+22=33. Divide 33 by 2 = 16.5 bhn
Three WW, one Lino, one pure lead: 11+11+11+22+5= 60. 60 divided by 6 = 10 bhn
One WW, one pure lead: 11+5=16. 16 divided by 2= 8 bhn

................Buckshot

[cajun shooter]

Or you can just look at the paper that is included with a Lyman mold. It's right there in B&W