The Iron Chest is an upgrade from the standard Chest and the Copper Chest. It has 54 slots, which is 27 more than a standard Chest and 9 more than the Copper Chest. In addition to crafting it, you can also right click on a Copper Chest with a Copper to Iron Chest Upgrade to upgrade it to an Iron Chest.
Recipe
NOTE : Refined Iron can be used in place of the Iron, however it provides no bonus and is slightly more costly.
Usage