currently I can melt iron ore into iron plates, then iron plates into steel
and
I can melt copper ore into copper plates but not copper plates into something else
It feels like it would make sense to have a "higher tier" of copper too. So... here´s a bit from wikipedia:
realistically this would need both iron and copper but maybe it could be made from just copper in the game for more straightforward gameplay purposes. Used for higher tech tier item production maybe?Copper-clad steel (CCS), also known as copper-covered steel or the trademarked name Copperweld is a bi-metallic product, mainly used in the wire industry that combines the high mechanical resistance of steel with the conductivity and resistance to corrosion of copper.
It is mainly used for grounding purposes, drop wire of telephone cables,[1] and inner conductor of coaxial cables, including thin hookup cables like RG174, and CATV cable.