A simple, inexpensive change in powder injection moulding sintering procedure resulted in a product with superior tensile properties and in reduced operating costs. By processing in a nitrogen gas environment instead of in an inert gas environment nitrogen was alloyed to 316L stainless steel powder during the sintering and densification step. Interstitial nitrogen concentration of 0·4 wt-% increased the yield strength by over 100%. Graphs of tensile properties versus temperature of powder injection moulded stainless steels with and without nitrogen were found to be comparable with those observed for similar as cast alloys. PM/0692
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