@Yog Sothoth 

Unfortunately no, you can either choose one piece of Chainmail armor or have Leather Boots, Leggings, and a Jerkin. Though item drops such as Iron Armor will drop here and there. And yes since I'm nice. Everytime you kill a cow you can get a Cow Hide to make infinite leather armor, I'll be adding Cow Farms in every city. 

But seriously though, you're going to have to buy it or find it via an item drop, or forge it yourself. But don't worry, we won't be too depraved of Iron and all that good stuff for too long.