Steel sheet and method for producing the same

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 12123069
APP PUB NO 20210355559A1
SERIAL NO

17286148

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Abstract

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A steel sheet having a specified chemical composition and a method for producing the steel sheet. The steel sheet has a microstructure comprising ferrite: 5% or less, and at least one of upper bainite, fresh martensite, tempered martensite, lower bainite, and retained γ: 95% to 100% by area percentage, and retained γ: 4% to 15% by volume percentage. Retained γUB has a specified area percentage SγUB, retained γLB has a specified distribution number NγLB, and at least one of (i) fresh martensite has a specified equivalent circular grain diameter and aspect ratio and (ii) retained γ grains has a specified equivalent circular grain diameter and aspect ratio.

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Patent Owner(s)

Patent OwnerAddress
JFE STEEL CORPORATIONTOKYO 100-0011

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Akimoto, Hiroyuki Tokyo, JP 14 212
Kaneko, Shinjiro Tokyo, JP 88 617
Matsui, Yoichiro Tokyo, JP 10 0
Ono, Yoshihiko Tokyo, JP 72 419
Tobata, Junya Tokyo, JP 14 5

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