Abstract
A hot rolled light - gauge martensitic steel sheet made by the steps comprising : ( a ) preparing a molten steel melt comprising : ( i ) by weight , between 0.20 % and 0.35 % carbon , less than 1.0 % chromium , between 0.7 % and 2.0 % manganese , between 0.10 % and 0.50% silicon , between 0.1 % and 1.0 % copper , less than 0.05 % niobium , less than 0.5 % molybdenum , and silicon killed containing less than 0.01 % aluminum , and ( ii ) the remainder iron and impurities result ing from melting ; ( b ) solidifying at a heat flux greater than 10.0 MW / m² and cooling the molten melt into a steel sheet less than 2.0 mm in thickness in a non - oxidizing atmosphere to bel 1080 ° C. and above Ar3 temperature at a cooling rate greater than 15 ° C./s ; and ( c ) hot rolling the steel sheet to between 15 % and 50 % reduction and rapidly cooling .
Recommended Citation
Watson, James W.; Kelly, Paul; Van Aken, David C.; and Killmore, Christopher Ronald, "Hot Rolled Light-Gauge Martensitic Steel Sheet and Method for Making the Same" (2022). Patents. 16.
https://scholarsmine.mst.edu/patents/16
Department(s)
Materials Science and Engineering
Patent Application Number
14/974,628
Patent Number
US 11,225,697 B2
Document Type
Patent
Document Version
Citation
File Type
text
Language(s)
English
Rights
© 2026 NUCOR Corporation, All rights reserved
Additional Rights Information
Assignee: NUCOR Corporation, Charlotte, NC (US)
Publication Date
18 January, 2022
Comments
Docket Number: 18MST046-UTL
Filing Date: 12/118/2015
Issue Date: 01/18/2022, FY22
References Cited
U.S. Patent Documents:
2,853,410 A 9/1958 Lula
3,053,703 A 9/1962 Breyer
Foreign Patent Documents:
CA 228424 A 1/1923
CN 100439543 C 12/2008
Prior Publication Data:
US 2016/0177411 A1 June 23, 2016