公开(公告)号：EP3933061A1

公开(公告)日：2022-01-05

申请号：EP20210596.1

申请日：2020-11-30

申请人： Hyundai Steel Company

发明人： KIM, Sung-Min ,  CHOI, Hye Rim

IPC分类号： C22C21/02 ,  C22C21/04 ,  C23C2/12 ,  C23C2/16 ,  C23C2/18 ,  C23C2/20 ,  C23C2/26 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/18 ,  C22C38/22 ,  C22C38/26 ,  C22C38/32

摘要： Disclosed is a steel sheet for hot press forming, which includes: a base steel sheet; and a plating layer disposed on the base steel sheet and including a diffusion layer and a surface layer that are sequentially laminated, wherein the diffusion layer includes an Fe-Al alloy layer and an Fe-Al intermetallic compound layer that are sequentially disposed on the base steel sheet and each include silicon, and an area fraction of the Fe-Al intermetallic compound layer with respect to the diffusion layer is 84.5 % to 98.0 %.