From Lost Fables Wiki
Copper is a very soft metal on its own, being easy to bend, heat, and forge. It heats quickly and easily, and takes to being alloyed very well, particularly with tin, which it creates bronze when paired with.
Copper is excellent in alloys, and very easy for smiths to shape and mold into whatever they please. Because of how it reacts to the air and water, turning green and getting a bit of a crust on it, it is not generally suited for food or water purposes. It both heats and cools very quickly.
Weaponry and Armor
Copper is not suitable for weaponry or armor, being too soft. When alloyed with tin in the proper amount, however, it creates bronze, which is very much suited for weaponry and armor, along with most other conceivable purposes which one might need metal for.
There are no copper Artifacts on Anoma, perhaps you can change this.