P/M Powers Auto Parts--Machining P/M steels for powertrain parts is tough, but answers abound.

摘要

Always on the hunt for lower weight, improved engine efficiency, lower costs and reduced noise and vibration, automakers are turning more frequently to powder metallurgy steel components for a variety of powertrain applications. According to data from the Metal Powder Industries Federation, Princeton, N.J., use of P/M auto parts almost tripled over 3 decades, from about 35 lbs. in each vehicle in 1975 to nearly 100 lbs. per vehicle in 2005.