Hardened Khorium is an alloy bar made from a mixture of Khorium bars and a Hardened Adamantite Bar. It is most expensive Burning Crusade-era bar to smelt in the game.
This item is smelted at a forge by Miners with a skill level of 375 who have learned this recipe from [Study of Advanced Smelting] (a rare zone drop in Sunwell Plateau).
As an ingredient
Hardened Khorium is used in the following recipes:
Patch 2.4.0 (25-Mar-2008): Added