Invention Grant
- Patent Title: Steel sheet for hot press formed member having excellent coating adhesion and manufacturing method for the same
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Application No.: US17517399Application Date: 2021-11-02
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Publication No.: US11820103B2Publication Date: 2023-11-21
- Inventor: Seong-Woo Kim , Jin-Keun Oh , A-Ra Cho , Hyeon-Jeong Shin
- Applicant: POSCO
- Applicant Address: KR Pohang-si
- Assignee: POSCO CO., LTD
- Current Assignee: POSCO CO., LTD
- Current Assignee Address: KR Pohang-si
- Agency: MORGAN, LEWIS & BOCKIUS LLP
- Priority: KR 20170068651 2017.06.01 KR 20170101557 2017.08.10
- Main IPC: B32B15/01
- IPC: B32B15/01 ; C22C38/00 ; C22C38/02 ; C22C38/04 ; C22C38/06 ; C22C38/28 ; C22C38/32 ; C23C2/12 ; C23C2/28 ; B21D22/02 ; C21D9/46 ; C22F1/00 ; C22F1/04 ; C21D6/00 ; C23C2/40 ; C23F17/00 ; B21D35/00 ; C23C26/00 ; C23C28/02 ; C23C30/00 ; C23C28/00 ; B32B15/18 ; C23C2/04 ; B32B15/04 ; C23C2/26 ; C23C2/06 ; C22C30/00 ; C22C38/14 ; C22C38/48 ; C22C38/40 ; C22C38/18 ; C22C38/42 ; C22C38/44 ; C22C38/08 ; C22C38/16 ; C22C38/24 ; C22C21/00 ; C22C38/38 ; C22C38/46 ; C22C38/20 ; C22C38/26 ; C22C38/22 ; C22C38/58 ; C22C38/12 ; C22C38/50 ; C22C38/54 ; B21D37/16 ; B32B5/20 ; B32B5/18 ; C21D9/52 ; C21D1/26 ; C22C38/60

Abstract:
The present invention relates to a steel sheet for a hot press formed member having excellent coating adhesion, and a method for manufacturing the same. A steel sheet for hot press forming according to one aspect of the present invention is an aluminum alloy plated steel sheet, wherein an average Fe content in a plating layer may be 40 wt % or more, and a concentration gradient of a section having a Fe content of 45 wt % to 80 wt % in the plating layer may 7 wt %/μm or less of a concentration gradient at a section having an Fe content of 45% to 80% in the plating layer in a thickness direction from a surface of the plating layer according to a result of GDS analysis.
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