In this research, infiltration and liquid phase sintering processes for densification of 409L stainless steel powders were performed and compared. Optimum condition for sintering the P/M parts made from 409L stainless steel powders was determined. This condition was employed for infiltration and liquid phase sintering using 2, 4, 6 and 8w/o copper as an infiltrate and liquid phase forming powders respectively. Physical and mechanical properties and corrosion resistance of the sintered parts were tested. Experimental results showed that the optimum condition for sintering of P/M parts from 409L stainless steel powders was 1350℃ for 45 minutes under pure hydrogen atmosphere. The yield strength, tensile strength and hardness were uncreased with increasing copper content for both infiltrated and liquid phase sintered parts. With increasing copper content, the density and corrosion resistance increased for the infiltrated parts but decreased for the liquid phase sintered parts. As a result, infiltration process was more promising than liquid phase sintering for this study.