ALLOY STEEL POWDER FOR SINTERED COMPACT AND SINTERED COMPACT HAVING HIGH STRENGTH, HIGH FATIGUE STRENGTH AND HIGH TOUGHNESS

摘要

PURPOSE: To provide alloy steel powder for a high strength Cr-contg. sintered compact and a sintered compact, having enhanced tensile strength fatigue strength and toughness. ;CONSTITUTION: This alloy steel powder has a compsn. consisting of, by weight, ≤0.1% C, ≤0.08% Mn, 0.5-3% Cr, 0.1-2% Mo, ≤0.01% S, ≤0.01% P, ≤0.2% O and the balance Fe with inevitable impurities or further contg. 0.2-2.5% Ni and/or 0.5-2.5% Cu. In this sintered compact, C content alone is specially regulated to 0.2-1.2%.;COPYRIGHT: (C)1993,JPO&Japio