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Metal Injection Molding (MIM) has become an established process over the past 20 years for producing small complex metal parts. A variety of industries have benefited from the capabilities of the MIM process. Some examples include orthodontic brackets, medical instruments, firearm components, lock mechanisms, and electronic data storage devices. More recently (over the past 5 years) the MIM process has found applications in the automotive industry in a variety of systems including steering columns, seat mechanisms, sunroof systems, ignition locks, airbags, and engines. This paper discusses some of the benefits that the MIM process has brought to these automotive applications.

The use of P/M stainless steel components in automotive exhaust systems continues to grow rapidly. These P/M components have met the stringent requirements demanded for these applications which were formerly only provided by wrought materials. These high density components are being required to pass specific qualification tests designed by OEM's and Tier 1's - Galling, Hot Vibration Leak and High Temperature Oxidation/Corrosion Tests. This paper discusses the performance of P/M stainless steel exhaust flanges and HEGO bosses in a number of OEM and Tier 1 specified performance tests.