Azure Trance said:Steel is basically iron and a tadbit of carbon. If it was melted down to a molten state, would its elements become seperated?.
Well, in the first place there is no need to melt the steel. Until the invention of the blast furnace during the Industrial Revolution iron was smelted, fabricated, and hardened, and recycled without melting.
In the second place, in steel and cast iron the carbon is not just mixed in with the iron, it is dissolved. So even if you did melt it the elements would not simply separate. But on the other hand the temperature would be so high that if the environment were oxidising the carbon would burn out (converting your steel to wrought iron), and if it were too much reducing the melt would absorb extra carbon from the carbon monoxide in the atmosphere, converting your mild steel to high-carbon steel or to mild cast iron).
Finally, pre-industrial steel is not a bulk commodity. Tools and weapons are made out of wrought iron stock (or bulat, in places where that technology was used), and carefully converted into steel (or partly converted into steel) in the course of fabrication and tempering, by the craft of the smith. A piece of fine steel armour might be a micro-scale composite of martensite and iron carbide, or might have a core of tough wought iron with a surface layer of hard steel. If you melt that down (even with the utmost care), or in many cases simply if you heat it up above transition temperature (which is about 745 C, whereas the usual working temperature is about 1100 C, and the melting point of iron is about 1530 C), you can spoil the special qualities of the material without affecting its chemical composition.
In short, the special qualities of high-quality steels are not a result principally of their bulk composition but of their temper, which does not survive re-fabrication.
So I would rule that when special (eg. dwarvish) steel booty is re-cycled, the result is ordinary steel scrap. That is a perfectly good starting point from making your own high-quality goods, but no better than good quality wrought iron from a smelter.
Regards,
Agemegos