Titanium Ore

Titanium Ore is a new Hardmode Ore that was introduced in the 1.2 patch.

If a player destroys a Demon Altar or Crimson Altar with a Pwnhammer after defeating the Wall of Flesh the world will generate either Titanium Ore or Adamantite Ore, alongside with the other Hardmode Ores like Palladium Ore or Cobalt Ore and Orichalcum Ore or Mythril Ore.