Alumite is the top-tier Overworld alloy. It is created by combining Aluminum, Iron and Obsidian in a smeltery at a 5:2:2 ratio. (Note that if you are using Obsidian, each block provides 2 ingots.) It is used in the creation of Alumite Tool Parts. It is notable for being one of the only Overworld materials to have a mining level of 4 (Cobalt), with the other being Steel.