WO2020130436A3 - 냉간 벤딩성이 우수한 고강도 구조용 강재 및 그 제조방법 - Google Patents

냉간 벤딩성이 우수한 고강도 구조용 강재 및 그 제조방법 Download PDF

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WO2020130436A3
WO2020130436A3 PCT/KR2019/017148 KR2019017148W WO2020130436A3 WO 2020130436 A3 WO2020130436 A3 WO 2020130436A3 KR 2019017148 W KR2019017148 W KR 2019017148W WO 2020130436 A3 WO2020130436 A3 WO 2020130436A3
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structural steel
excellent cold
manufacturing
strength structural
method therefor
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French (fr)
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WO2020130436A2 (ko
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조재영
이일철
강상덕
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주식회사 포스코
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Priority to EP19898344.7A priority Critical patent/EP3901305B1/en
Priority to JP2021535061A priority patent/JP7348948B2/ja
Priority to US17/415,394 priority patent/US20220064745A1/en
Priority to CN201980084388.9A priority patent/CN113227425B/zh
Publication of WO2020130436A2 publication Critical patent/WO2020130436A2/ko
Publication of WO2020130436A3 publication Critical patent/WO2020130436A3/ko

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Abstract

본 발명의 일 측면에 따른 냉간 벤딩성이 우수한 고강도 구조용 강재는, 중량%로, C: 0.02~0.1%, Si: 0.01~0.6%, Mn: 1.7~2.5%, Al: 0.005~0.5% 이하, P: 0.02% 이하, S: 0.01% 이하, N: 0.0015~0.015%, 나머지 Fe 및 기타 불가피한 불순물을 포함하되, 두께방향을 따라 외측의 표층부와 내측의 중심부가 미세조직적으로 구분되며, 상기 표층부는 템퍼드 베이나이트를 기지조직으로 포함하고, 상기 중심부는 베이니틱 페라이트를 기지조직으로 포함할 수 있다.
PCT/KR2019/017148 2018-12-19 2019-12-06 냉간 벤딩성이 우수한 고강도 구조용 강재 및 그 제조방법 WO2020130436A2 (ko)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP19898344.7A EP3901305B1 (en) 2018-12-19 2019-12-06 High-strength structural steel having excellent cold bendability, and manufacturing method therefor
JP2021535061A JP7348948B2 (ja) 2018-12-19 2019-12-06 冷間曲げ性に優れた高強度構造用鋼材及びその製造方法
US17/415,394 US20220064745A1 (en) 2018-12-19 2019-12-06 High-strength structural steel having excellent cold bendability, and manufacturing method therefor
CN201980084388.9A CN113227425B (zh) 2018-12-19 2019-12-06 具有优异的冷弯性的高强度结构钢及其制造方法

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Application Number Priority Date Filing Date Title
KR1020180165284A KR102200222B1 (ko) 2018-12-19 2018-12-19 냉간 벤딩성이 우수한 고강도 구조용 강재 및 그 제조방법
KR10-2018-0165284 2018-12-19

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WO2020130436A2 WO2020130436A2 (ko) 2020-06-25
WO2020130436A3 true WO2020130436A3 (ko) 2020-09-03

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US (1) US20220064745A1 (ko)
EP (1) EP3901305B1 (ko)
JP (1) JP7348948B2 (ko)
KR (1) KR102200222B1 (ko)
CN (1) CN113227425B (ko)
WO (1) WO2020130436A2 (ko)

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KR100695762B1 (ko) * 2006-12-20 2007-03-16 동산엔지니어링 주식회사 저압전선 접속용 분기 슬리브
CN115821157B (zh) * 2022-11-18 2024-01-02 钢铁研究总院有限公司 一种高钢级抗硫化氢腐蚀油井管及其制备方法

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KR960009174B1 (en) * 1992-09-24 1996-07-16 Nippon Steel Corp Process for porducing rolled shape steel material having high strength high toughness and excellent fire resistance
KR100833076B1 (ko) * 2006-12-22 2008-05-27 주식회사 포스코 저온인성과 취성균열전파정지특성이 우수한 고강도저항복비 구조용 강재 및 그 제조방법
JP2010126808A (ja) * 2008-12-01 2010-06-10 Sumitomo Metal Ind Ltd 冷延鋼板およびその製造方法
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KR20190077183A (ko) * 2017-12-24 2019-07-03 주식회사 포스코 취성균열 전파 저항성이 우수한 구조용 강재 및 그 제조방법

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KR20200076804A (ko) 2020-06-30
WO2020130436A2 (ko) 2020-06-25
US20220064745A1 (en) 2022-03-03
EP3901305A2 (en) 2021-10-27
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