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Powder Metallurgy (P/M) stainless steel automotive exhaust flanges are in volume production. However competing technologies continue to improve and may threaten the anticipated increase in applications of P/M stainless steel flanges. This paper examines improvements in powder propeties that should improve the processing and perfomance of P/M stainless steels.

Machinability of powder metal components (P/M) requires a better understanding material compositon, microstructure, and machining process conditions. By employing the appropriate machinability additives and base powder design, machining productivity can be optimized. Through proper application planning, the material supplier, P/M fabricator, and end user can design the P/M system to balance part performance and machinability requirements.