LOW-ALLOY STEEL POWDER FOR POWDER METALLURGY AND ITS SINTERED MOLDING AND TEMPERED MOLDING

摘要

PURPOSE:To obtain the low-alloy steel powder for powder metallurgy which has good moldability, allows compaction to a higher density and yields the high-strength sintered body and tempered body by a hardening effect at the time of sintering and temper heat treatment, by specifying the chemical composition of the low-alloy steel powder. CONSTITUTION:The low-alloy steel powder for powder metallurgy having the chemical components consisting of =0.05 (wt.%; hereafter the same) C, =0.3% Mn, 0.3 to 2.5% Ni, 0.3 to 2.0% Mo, =0.2% O, and the balance unavoidable impurities as well as the sintered molding and heat treated and tempered body thereof are obtd.