Invention Grant
- Patent Title: Hot dip coated steel having excellent processability
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Application No.: US16466459Application Date: 2017-12-19
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Publication No.: US11059269B2Publication Date: 2021-07-13
- Inventor: Jin-You Kim
- Applicant: POSCO
- Applicant Address: KR Pohang-si
- Assignee: POSCO
- Current Assignee: POSCO
- Current Assignee Address: KR Pohang-si
- Agency: Morgan, Lewis & Bockius LLP
- Priority: KR10-2016-0174584 20161220
- International Application: PCT/KR2017/015033 WO 20171219
- International Announcement: WO2018/117606 WO 20180628
- Main IPC: B32B15/01
- IPC: B32B15/01 ; C22C38/48 ; C22C38/46 ; C22C38/44 ; C22C38/42 ; C22C38/06 ; C22C38/04 ; C22C38/02 ; C22C38/00 ; C21D9/46 ; C21D8/02 ; C21D6/00 ; C23C2/40 ; C23C2/02 ; C22C38/12 ; C22C38/22 ; C23C2/04 ; C23C2/06 ; C23C2/12 ; C22C38/16 ; C23C30/00 ; C23C28/02 ; C22C38/26 ; C22C38/20 ; B32B15/04 ; C22C38/08 ; C22C38/40 ; C23C28/00 ; C22C38/18 ; C22C38/24 ; B32B15/18 ; C21D6/02

Abstract:
Disclosed are a hot dip coated steel and a method for manufacturing the same, the hot dip coated steel comprising a hot rolled steel and a hot dip coated layer formed on the surface of the hot rolled steel, wherein the hot rolled steel comprises: by wt %, 0.05-0.15% of C, 0.5% or less of Si (excluding 0%), 0.5-1.5% of Mn, 0.01-0.05% of Nb, 0.005-0.05% of V, 0.03% or less of P (excluding 0%), 0.015% of S or less (excluding 0%), 0.05% or less of Al (excluding 0%), 0.01% or less of N (excluding 0%), and the balance of Fe and inevitable impurities; 90 area % or more of ferrite as the microstructure thereof; and 5,000-15,000/μm2 of V-based precipitates.
Public/Granted literature
- US20200070476A1 HOT DIP COATED STEEL HAVING EXCELLENT PROCESSABILITY, AND MANUFACTURING METHOD THEREFOR Public/Granted day:2020-03-05
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