Bronze

Bronze Manufactured Resource Skill Smelting Methods of  manufacturing Method Amount primitive smelting furnace, bellows 350g copper, 50g tin, 300g charcoal 200 primitive smelting furnace, bellows 350g copper, 50g tin, 200g coal 200 smelting furnace, bellows 280g copper, 40g tin, 240g charcoal 200 smelting furnace, bellows 280g copper, 40g tin, 160g coal 200

Made in a primitive smelting furnace or smelting furnace^* using bellows of leather, cotton cloth or hemp cloth.

Is used as an alternative to iron in some places for making some weapons and tools.

^*: Note that the smelting furnace can't be made without iron.