Heat treatment in addition to austenitic stainless steel, stainless steel MIM parts, MIM materials can be heat treatment, to increase the strength, hardness and wear resistance. In order to get the best strength and wear resistance, the need to temper or eliminate the stress after quenching, tempering temperature is an important factor to determine the final hardness. When the MIM ferrous parts are manufactured in the final carbon free or low carbon content, the surface carburizing and quenching can be carried out to improve the surface hardness and keep the toughness of the core part. Martensite and precipitation hardening stainless steel can also be used to heat treatment to increase the hardness and strength.