I suppose this is a rather dumb question but, as usual, I'm a bit confused. The question is in regard to lead casting alloys using the three usual metals, Pb, Sn, Sb.
Question: Within the capabilities of the average home owned lead hardness tester, does a specific percentage alloy result in a hardness that only that alloy can have, or can there be several combinations of metals that will yield the same reading?
That question is leading up to more questions if the answer is yes, more than one alloy can give the same reading. However, if the answer is no, then the subject is closed for my purposes.