US 11,833,778 B2
Plating steel sheet for hot press forming, forming member using same, and manufacturing method therefor
Hyeon-Seok Hwang, Gwangyang-si (KR); Il-Jeong Park, Gwangyang-si (KR); and Myung-Soo Kim, Gwangyang-si (KR)
Assigned to POSCO, Pohang-si (KR)
Filed by POSCO CO., LTD, Pohang-si (KR)
Filed on May 16, 2022, as Appl. No. 17/744,908.
Application 17/744,908 is a continuation of application No. 16/957,950, granted, now 11,358,369, previously published as PCT/KR2018/016546, filed on Dec. 21, 2018.
Claims priority of application No. 10-2017-0180338 (KR), filed on Dec. 26, 2017.
Prior Publication US 2022/0274377 A1, Sep. 1, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. B32B 15/01 (2006.01); C23C 2/12 (2006.01); C22C 21/10 (2006.01); C22C 38/02 (2006.01); C22C 38/04 (2006.01); C23C 2/28 (2006.01); C23C 2/40 (2006.01)
CPC B32B 15/012 (2013.01) [C22C 21/10 (2013.01); C22C 38/02 (2013.01); C22C 38/04 (2013.01); C23C 2/12 (2013.01); C23C 2/28 (2013.01); C23C 2/40 (2013.01); Y10T 428/12757 (2015.01)] 14 Claims
OG exemplary drawing
 
1. A plated steel sheet for hot press forming comprising:
a base steel sheet;
an Al—Zn-based plating layer on at least one surface of the base steel sheet; and
an Fe—Al-based plating layer between the base steel sheet and the Al—Zn-based plating layer,
wherein the Fe—Al-based plating layer prevents the base steel sheet from directly contacting with a Zinc (Zn) component of the Al—Zn-based plating layer,
wherein the Fe—Al-based plating layer comprises, by wt %, 30 to 60% of aluminum (Al), 30 to 60% of iron (Fe), and 20% or less of silicon (Si), and other impurities, and
wherein the Fe—Al-based plating layer comprises by wt %, 3% or less of Zinc (Zn).