Cast, Heat-Resistant Austenitic Stainless Steels Having Reduced Alloying Element Content
AssigneeOak Ridge National Laboratory
InventorsGovindarajan Muralidharan, Vinod Kumar Sikka, Philip J. Maziasz, Roman I. Pankiw
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Abstract
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, M23C6, and M (C, N).
Claims11
A cast, austenitic steel consisting 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, said steel being essentially free of Ti and Co, said steel characterized by at least one microstructural component selected from the group consisting of MC, M23C6, and M (C, N).
Dependencies are inferred from the claim text.