As above. Create of alloys of different metals with different properties, for example, iron + metal = metal resistant to high temperatures, alloys could be also created by adding, for example, thermite, and other ingredients .
@mirek123(View Post) maybe later, this sounds "like" a good Idea, but like what @mniip said, It is hard to code all the possible alloys from all the metals we have.
@mniip Hm. I'm thinking you could do it with lava's ctype and possibly tmp, if needed... Example, if you get molten IRON, and it touches molten METL, the ctype becomes ALOY, and the tmp is set to 1. If ALOY has a tmp of 1, it is called 'Iron alloy'. Kinda complex, but not impossible.