Sulfuron Ingot

Sulfuron Ingot drops from Golemagg the Incinerator in the Molten Core.

If you speak to Lokhtos Darkbargainer while this item is in your inventory, he will offer you A Binding Contract to exchange the ingot for Plans: Sulfuron Hammer. Eight more Sulfuron Ingots are needed, along with many other items, to make the Sulfuron Hammer itself.