Chromium and manganese are used frequently in the wrought steel industry to improve mechanical properties and hardenability. However, these elements have been difficult to incorporate into P/M steels due to their high affinity for oxygen. A new nickel-free P/M steel containing Cr, Mn, Si and Mo is being developed for high performance applications. Sintering studies performed over a range of temperatures have shown that reasonable oxygen contents along with superior mechanical properties can be achieved with this new steel. The effect of sintering temperature and density on mechanical properties will be discussed.
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