Definitions for "Austenitizing"
Heating steel to the austenitizing temperature (about 1670 degrees F) and allowing time for the steel microstructure to transform to Austenite. Normally the first step in heat treating a steel drill stem component.
Temperature where homogeneous austenite can form.  Austenitizing is the first step in most of the heat treatments for steel and cast irons.
Forming austenite by heating a ferrous alloy into the transformation range (partial austenitizing) or above the transformation range (complete austenitizing). When used without qualification, the term implies complete austenitizing.