Fel Iron Bar

Fel Iron Bars are creating by smelting Fel Iron Ore. These bars can then be used in other professions such as blacksmithing, engineering, and jewelcrafting. They can also be used by miners to create powerful alloy metals.

Source
This item is smelted at a forge by Miners with a skill level of 300.

This skill is taught by mining trainers in the Outland.

Mining

 * Smelt Felsteel
 * At skill level 350, smelt 3 Fel Iron Bars and 2 Eternium Bars into 1 Felsteel Bar