Alloy Calculator

[R.M.]

Is anybody using the Alloy Calculator program downloaded from the Cast Bullet Association? I'm having a problem with it. It seems to think that pure lead has a BHN of 8.6.

[R.M.]

So with 70 reads on this post, and no replies, I have to assume that nobody uses this program. I thought it might be a useful tool, but as I have it, I don't believe the results are anywhere accurate.

[lwknight]

I don't use it. I made my own but its only for mixing alloy and no hardness scale or anything like that.

[imashooter2]

Rotometals seems to think pure lead is 8.6 as well. This from their web site:



Basic Rules for Harding Lead-

For every 1% additional tin, Brinell hardness increases 0.3.
For every 1% additional antimony, Brinell hardness increases 0.9.
For a simple equation,
Brinell = 8.60 + ( 0.29 * Tin ) + ( 0.92 * Antimony )

[R.M.]

Now that's interesting. You'd think they know what's what, but it goes against everything I've ever read.
Anyway, I just thought that program would be something I could make good use of, but it just doesn't seem right to me.

[kelbro]

I used it to calculate out a batch that I wanted to duplicate Lyman #2. It worked pretty well. It seems like I had to tweak some number in there. I don't have it on this laptop but I will check to see if I can find it and what I had to tweak.

[garandsrus]

RM,

If you search for alloy calculator here you should find several choices.

John

[R.M.]

RM,

If you search for alloy calculator here you should find several choices.

John
I'll take a look, thanks.