thought: steel is such a common material for tools because, primarily, of the abundance of iron; it's the most abundant metal. As such, a lot of research has gone into making tools and structures out of iron and iron-based alloys.
But what materials would tools and structures be made of if given an unlimited amount of any ores you want? (you have to smelt, alloy, and forge them yourself though) If iron didn't have the advantage of abundance, what would tools have been made of instead?
@Felthry the thing where steel has allotropes and you can tweak hardness by quenching / tempering / etc is a big deal.
