公开(公告)号：US20250051872A1

公开(公告)日：2025-02-13

申请号：US18720159

申请日：2022-01-26

Applicant: Hyundai Steel Company

Inventor： Jae Min Lee ,  Sun Young Bae

IPC: C21D9/46 ,  B21D22/02 ,  C22C21/10 ,  C23C2/12 ,  C23C2/40 ,  C23C28/00

Abstract: An embodiment of the present invention discloses a hot-stamped part including: a base steel sheet; and a plated layer provided on the base steel sheet and including zinc (Zn), magnesium (Mg), silicon (Si), aluminum (Al), strontium (Sr), and the balance of iron (Fe) and other inevitable impurities, wherein the plated layer includes an alloying blocking layer, an intermediate alloy layer, and a corrosion resistance reinforcement layer which are sequentially stacked from the base steel sheet, and the corrosion resistance reinforcement layer includes an Sr-containing surface oxide layer.