Hot-rolled steel sheet

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United States of America Patent

PATENT NO 12123064
SERIAL NO

17422406

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Abstract

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This hot-rolled steel sheet has a predetermined chemical composition, in which a metal microstructure contains, by area %, 3.0% or more of residual austenite, has a ratio L52/L7 of a length L52 of a grain boundary having a crystal orientation difference of 52° to a length L7 of a grain boundary having a crystal orientation difference of 7° about a <110> direction of 0.10 or more and 0.18 or less, has a standard deviation of a Mn concentration of 0.60 mass % or less, and has a tensile strength of 980 MPa or more.

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Patent Owner(s)

Patent OwnerAddress
NIPPON STEEL CORPORATIONCHIYODA-KU TOKYO 100-8071

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Ando, Jun Tokyo, JP 49 197
Asato, Tetsu Tokyo, JP 3 2
Hayashi, Koutarou Tokyo, JP 46 80
Kaido, Hiroshi Tokyo, JP 8 7
Sakakibara, Akifumi Tokyo, JP 19 33
Shuto, Hiroshi Tokyo, JP 53 224

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