Titansteel Bar

Titansteel Bars are used as the main ingredient for almost all of the level 80 Blacksmithing epics, as well as some Engineering epics; including the [Mechano-Hog] / [Mekgineer's Chopper].

Source

This item can be crafted using Mining (450); taught by Grand Master Mining trainers for 20.

Materials required
	3x [Titanium Bar]			1x [Eternal Fire]
	1x [Eternal Earth]			1x [Eternal Shadow]

Until patch 3.3.3, Titansteel Bar had a 20 hour cooldown.

Acquisition

A great place to acquire all the materials is in Wintergrasp. Elementals that often drop the crystallized elements of all varieties can be found there. If your faction controls the fortress, Revenants that drop the crystallized materials more reliably also appear. Circling the area with [Find Minerals] on should eventually yield enough titanium ore.

If one has access to a highly trained alchemist, the much easier to acquire saronite can be transmuted into titanium (without a cooldown).

The downside of searching in Wintergrasp is that if your faction is highly outnumbered, it can prove difficult to live long enough to mine these nodes.

Titansteel Bar as an ingredient

Blacksmithing

also needing a [Runed Orb]

also needing a [Crusader Orb]

also needing [Primordial Saronite]

Enchanting

Enchant Weapon - Blade Ward

Engineering

Patch changes

Patch 6.0.2 (2014-10-14): Stacks to 200, up from 20.
Patch 3.3.3 (2010-03-23): Creating this item no longer results in a cooldown.
Patch 3.0.2 (2008-10-14): Added.