Titanium

Titanium is one of the hardest metals on Azeroth. It is a highly lustrous metal known for its silver color, low density and high strength. Titanium is one of the purest metals known to Azeroth, impurities will almost never be found within the ore, making it a perfect candidate for high quality metalworking and has seen heavy use since its discovery in Northrend. Titanium is known to have certain unusual qualities to it. It has a tendency to crop up in close proximity to Azeroth's Titan-related facilities. Indeed, several Titan creations and constructs have been noted to make heavy use of Titanium in their construction.

Titanium also seems to have a certain degree of resistance to corruption. Materials melded with it will not bond properly unless treated under certain requirements. As observed by Firstborn Dwarves and Kirin Tor Magi, Titanium will resist the corrupting influences of Fel Magics and Old God's corruption to an unusual degree, which makes it a useful ward when creating magical defenses, though this resistance is not absolute.