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Cast, heat-resistant austenitic stainless steels having reduced alloying element content

United States Patent

July 6, 2010
View the Complete Patent at the US Patent & Trademark Office
Oak Ridge National Laboratory - Visit the Partnerships Directorate Website
A cast, austenitic steel composed essentially of, expressed in weight percent of the total composition, about 0.4 to about 0.7 C, about 20 to about 30 Cr, about 20 to about 30 Ni, about 0.5 to about 1 Mn, about 0.6 to about 2 Si, about 0.05 to about 1 Nb, about 0.05 to about 1 W, about 0.05 to about 1.0 Mo, balance Fe, the steel being essentially free of Ti and Co, the steel characterized by at least one microstructural component selected from the group consisting of MC, M.sub.23C.sub.6, and M(C, N).
Muralidharan; Govindarajan (Knoxville, TN), Sikka; Vinod Kumar (Oak Ridge, TN), Maziasz; Philip J. (Oak Ridge, TN), Pankiw; Roman I. (Greensburg, PA)
UT-Battelle, LLC (Oak Ridge, TN)
11/ 038,923
January 19, 2005
The United States Government has rights in this invention pursuant to contract no. DE-AC05-00OR22725 between the United States Department of Energy and UT-Battelle, LLC.