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Austenitic stainless steel

United States Patent Application

20060275168
A1
View the Complete Application at the US Patent & Trademark Office
Embodiments of an austenitic stainless steel include, in weight percentages based on total weight of the steel: 0.05 to 0.2 carbon; 0.08 to 0.2 nitrogen; 20 to 23 chromium; 25 to 27 nickel; 1 to 2 molybdenum; greater than 1.5 to 4.0 manganese; 0.20 to 0.75 niobium; up to 0.1 titanium; iron; and incidental impurities. Certain other embodiments of an austenitic stainless steel include, in weight percentages based on total weight of the steel: 0.05 to 0.2 carbon; 0.08 to 0.2 nitrogen; 20 to 23 chromium; 25 to 27 nickel; 1 to 2 molybdenum; up 4.0 manganese; 0.20 to 0.75 niobium; at least one of no greater than 0.1 titanium and no greater than 0.1 aluminum; iron; and incidental impurities.
Rakowski, James A. (Pittsburgh, PA), Stinner, Charles P. (Wexford, PA)
ATI Properties, Inc.
11/ 270,279
November 9, 2005
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT [0002] This work, in part, was funded under United States Department of Energy contract no. DE-FC02-OOCH11062.