SOFT-MAGNETIC STEEL MATERIAL FOR NITRATION AND SOFT-MAGNETIC STEEL COMPONENT EXCELLENT IN WEAR RESISTANCE

摘要

PROBLEM TO BE SOLVED: To provide a soft-magnetic steel material excellent in wear resistance and magnetic properties after being nitrided.;SOLUTION: The soft-magnetic steel material for nitration contains C:0.001 to 0.020% (% means mass%. The same hereafter.), Si:0.1% or less (not including 0%), Mn:0.1 to 0.5%, P:0.02% or less (not including 0%), S:0.02% or less (not including 0%), Cu:0.1% or less (not including 0%), Ni:0.1% or less (not including 0%), Al:0.040% or less (not including 0%), N:0.0040% or less (not including 0%), further Nb:0.015 to 0.08% and/or Ti:0.01 to 0.1% so as to satisfy expression (1), and the balance iron with inevitable impurities, and the steel structure of the soft-magnetic steel material for nitration is a ferrite single phase structure. 8≤([Nb]+2×[Ti])/[N]≤60...(1), where [Nb], [Ti] and [N] are represents a content (mass%) of Nb, Ti and N, respectively.;COPYRIGHT: (C)2014,JPO&INPIT