Abstract: Wear behavior of nanocrystallization of Armco ron treated by severe rolling(SR),conventionally rolling(CR) and annealed SR was in restigated in dry sliding and lubrication condition by a reciprocating tester,and plastic deformation properties of tested samples were studied using impacting and sound emission scratch tester.In dry sliding the abrasive wear resistance and plough resistance of SR sample were less than that of CR one.The SR sample displayed good wear resistance at lubrication condition.Nanocrystallization of Armco iron by severe rolling exhibited high surface activity but it exhibited low shear force due to its poor plasticsity.