Alloys: Bronze, Brass, Steel

Weapons Light and one-handed weapons can be crafted from bronze. Likewise, spear points, arrowheads, and axe heads can be crafted from bronze, even those that are parts of two-handed weapons. Bronze is too weak to be used for two-handed weapons made entirely out of metal, and cannot typically be used to craft polearms, with the exception of the rhomphaia, which is provided in the section on Bronze Age equipment. Bronze weapons have the hardness of their base weapons but also have the fragile quality. Bronze weapons do the same damage as Iron weapons of the same type.

Armor Bronze can be used to create any medium or light armor made entirely of metal or that has metal components. It protects a creature as well as Iron armor does, but it has the fragile quality. Bronze armor has the same cost and weight as normal steel armor of its type. Bronze armor has a hardness of 9.

Bronze is Easy to melt compared to Iron and cannot take fire enchantments well, due to the fact it is an alloy, mages find it slightly easier to enchant, 

Bronze is cost effective these days due to recently opened tin and copper mines within the empire. 

Brass

Item doesn't exist yet

Steel

Steel is Iron containing trace amounts of Carbon (2%), it is still hard to enchant due to it being a dense metal, its cost is slightly higher but its weight is slightly lower than iron making it the preferred material of the three common materials to build equipment, with the exception of sea travelers who still prefer bronze for its corrosion resistance.