Whats up with this Lead??

[K-Rod]

This started out as a 3lb ingot from the scrap yard. It was hard as nails & I had to keep the pots on High Temp in order for it to flow out the bottom pour. If I stirred up the melt, it was a normal "silver" then after stirring it would change colors. Im positive it wasnt pure lead as hard as it was. Any ideas?67709

[swheeler]

No idea, but a guess, copper at high heat.

[runfiverun]

the green color is what was throwing me off.
but copper is a likely culprit.

[rnhathaway]

We just ran into this where I work. We think its zinc. Had all tell tale signs. Oatmealy texture at lower heat. Had all kinds of rainbow colors as we drained out the pot.

[K-Rod]

Thanks for the input. Im not sure what it is. The ingot mold fills out very nicely once I got the ingot mold up to temp. I guess I'll just do some testing with it to determine what to do with it.