It's still good.
Salvageable Metal can be found around the Path of Glory in the Hellfire Peninsula.
Objective of[]
Contains 
[Salvaged Metal] for the quests:
[10-30] Waste Not, Want Not
[10-30] I Work... For the Horde!
Patch changes[]
Patch 2.0.3 (2007-01-09): Added.
