what to do with Bismuth

[sagamore-one]

I was gifted 4 pentagon shaped ingots of 45 percent Bismuth 26 percent lead totaling 7 1/2 pounds.
Any suggestions on how to mix to get WW alloy or #2 alloy?

[runfiverun]

Bi adds hardness just like antimony.
it does it at a price [monetarily] and it adds more brittleness to the alloy, tin helps mitigate the brittleness somewhat.
I would only add about 1% bismuth and make up the rest [other 2%] with antimony, you'll have a better alloy.
something like 5 parts lead to 1 part lino-type and the equivalent to 1% Bi from your bars.

what is the other 19%?

[sagamore-one]

The other percentage is 2.5% tin, 3% antimony , 2% nickel, 2.5 arsenic, and less than 1 % of a whole lot of other stuff. Less than .02 of zink.