Relationship between lead content & melting point?

[Naphtali]

A friend and I want to attempt a two-piece cast bullet design, nose and base having different alloys. He informs me, for example, that pure lead has substantially higher melting temperature than linotype, that the closer to pure lead is the alloy, the higher is its melting point. Is this accurate across the casting alloy spectrum?

[Nueces]

Here's a link that addresses part of your question;

http://www.chemguide.co.uk/physical/phaseeqia/snpb.html#top

It has info for lead-tin only, but shows that melting temperature does decrease with increasing tin content for all normal bullet alloys. When the tin percentage reaches 62%, the melting temperature starts back up.

Other references I've seen also confirm that small percentages of other-than-lead metals tend to lower the melting point.

Mark

[Calamity Jake]

Searching this sight will find articals on casting 2 alloy boolets somewhere. Seems like Bruce B did that a while back.

[runfiverun]

yes........ lead is over 600, lino is less then that mainly because of the tin content.
there are other options to what you seek..