Surface-treated steel sheet and method of producing the same

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 12195858
APP PUB NO 20240068107A1
SERIAL NO

18256988

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Abstract

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It is provided a surface-treated steel sheet that can be produced without using hexavalent chromium and has excellent sulfide staining resistance and coating secondary adhesion. It is a surface-treated steel sheet having: a Sn plating layer; a metallic Cr layer disposed on the Sn plating layer; and a Cr oxide layer disposed on the metallic Cr layer, on at least one surface of a steel sheet, and the surface-treated steel sheet has a water contact angle of 50° or less and a total atomic ratio of K, Na, Mg, and Ca adsorbed on the surface to Cr of 5% or less.

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Patent Owner(s)

Patent OwnerAddress
JFE STEEL CORPORATIONTOKYO 100-0011

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Kawano, Takashi Tokyo, JP 90 559
Nakamichi, Haruo Tokyo, JP 10 56
Suzuki, Yoshitsugu Tokyo, JP 91 647
Tomozawa, Masanari Tokyo, JP 7 0
Ueno, Takashi Tokyo, JP 164 1647
Yamanaka, Yoichiro Tokyo, JP 38 175

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