A metal quarterstaff wouldn't bend properly. Metal caps, on the other hand...
No but a tightly wrapped, 6 foot metal coil would be hollow and therefore lighter in weight, and have a nice bend to it as you smash an ogre's teeth through the back of it's head. Although you'd have to wrap it in leather, otherwise it has a nasty tendency to pinch.
Meddle not in the affairs of Dragons, unless you brought someone bigger and tastier along with you.