STEEL SHEET FOR HOT PRESS FORMED MEMBER HAVING EXCELLENT RESISTANCE TO HYDROGEN DELAYED FRACTURE, AND METHOD FOR MANUFACTURING SAME

Title:

STEEL SHEET FOR HOT PRESS FORMED MEMBER HAVING EXCELLENT RESISTANCE TO HYDROGEN DELAYED FRACTURE, AND METHOD FOR MANUFACTURING SAME

Document Type and Number:

WIPO Patent Application WO/2018/221989

Kind Code:

A1

Abstract:

The present invention relates to a steel sheet for a hot press formed member having excellent resistance to hydrogen delayed fracture, and a method for manufacturing the same. A steel sheet for a hot press formed member according to one aspect of the present invention may comprise: a base steel sheet; an aluminum alloy plated layer on a surface of the base steel sheet; and an oxide layer which is formed on a surface of the plated layer and has a thickness of 0.05 μm or more.

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Inventors:

KIM SEONG-WOO (KR)
OH JIN-KEUN (KR)
CHO YEOL-RAE (KR)

Application Number:

PCT/KR2018/006255

Publication Date:

December 06, 2018

Filing Date:

May 31, 2018

Export Citation:

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Assignee:

POSCO (KR)

International Classes:

B21D35/00; B21D22/02; C23C26/00

Foreign References:

KR101696121B1	2017-01-13
KR101536703B1	2015-07-14
KR101569505B1	2015-11-30
JP2004043887A	2004-02-12
KR20150073021A	2015-06-30
US6296805B1	2001-10-02

Other References: