When smelted, an Iron Ore will give you an Iron Ingot and some Xp Orbs.
The Iron Ingot is used to make Chisels which are used to carve the Red Sandstone, Shurikens (the most accessible throwable weapon), different types of Lamps, the [Arcana Portal]] and the Arlemite Armor Set, along with its vanilla uses.
Divine RPG introduced 18 new crafting recipes using the Iron Ingot and one using Iron Blocks (Iron Block is completely Vanilla).
(Using Iron Blocks)
Iron Ingots are also used to craft the Arlemite Armor.