Board Thread:Help Desk/@comment-24828764-20140418122950/@comment-24133975-20140418151432

Ok, well, Titanuim is the replacement for Adamamatite in your world then. Compare the stats: Adamantite Armor vs. Titanium Armor. It works like this, if you get Titanium in your world you will not be able to find Adamantite.

Hope this helps! :D