I was looking at the Rotometal web site for some antimony. I have some 99% lead and some tin in my stash in the form of 95-5 solder, but no antimony. I thought to smelt up a batch of alloy adding some antimony to the mix to get to a BHN of 12 or so. The Rotometal web site says the melting point for Antimony is 1167 F. I would think that any Sb in the mix would separate out having a much higher melting point. What am I missing here?