• Patent Title: Hot-dip galvanized steel material having excellent weldability and press workability and manufacturing method therefor
  • Application No.: US16471289
    Application Date: 2017-12-21
  • Publication No.: US11753709B2
    Publication Date: 2023-09-12
  • Inventor: Suk-Kyu LeeSang-Heon KimKwang-Tai MinYon-Kyun Song
  • Applicant: POSCO
  • Applicant Address: KR Pohang-si
  • Assignee: POSCO CO., LTD
  • Current Assignee: POSCO CO., LTD
  • Current Assignee Address: KR Pohang-si
  • Agency: CANTOR COLBURN LLP
  • Priority: KR 20160177190 2016.12.22
  • International Application: PCT/KR2017/015292 2017.12.21
  • International Announcement: WO2018/117714A 2018.06.28
  • Date entered country: 2019-06-19
  • Main IPC: C23C2/06
  • IPC: C23C2/06 C22C18/00 C23C2/26
Hot-dip galvanized steel material having excellent weldability and press workability and manufacturing method therefor
Abstract:
Provided are a hot-dipped galvanized steel material and a method for manufacturing the same. The hot-dipped galvanized steel material comprises an iron substrate and a hot-dipped galvanizing layer formed on the iron substrate, wherein the hot-dipped galvanizing layer comprises, by wt %, 0.01 to 0.5% of Al, 0.01 to 1.5% of Mg, 0.05 to 1.5% of Mn, 0.1 to 6% of Fe, and the balance of Zn and inevitable impurities, with a Zn—Fe—Mn based alloy phase present at the interface between the iron substrate and the hot-dipped galvanizing layer, and an area ratio of the Zn—Fe—Mn-based alloy phase to the hot-dipped galvanizing layer ranging from 1 to 60%.
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