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EP1825014A4 - STEEL WITH EXCELLENT WEATHER RESISTANCE NEAR SEA AND MANUFACTURING METHOD THEREFOR - Google Patents

STEEL WITH EXCELLENT WEATHER RESISTANCE NEAR SEA AND MANUFACTURING METHOD THEREFOR

Info

Publication number
EP1825014A4
EP1825014A4 EP05856389A EP05856389A EP1825014A4 EP 1825014 A4 EP1825014 A4 EP 1825014A4 EP 05856389 A EP05856389 A EP 05856389A EP 05856389 A EP05856389 A EP 05856389A EP 1825014 A4 EP1825014 A4 EP 1825014A4
Authority
EP
European Patent Office
Prior art keywords
steel
weather resistance
excellent weather
manufacturing
method therefor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP05856389A
Other languages
German (de)
French (fr)
Other versions
EP1825014A1 (en
EP1825014B1 (en
Inventor
Hwan-Gyo Jung
Jang-Yong Yoo
Kyung-Keun Um
Eui-Gyeong Jung
Jong-Kyo Choi
Jae-Sang Lee
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Posco Holdings Inc
Original Assignee
Posco Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from KR1020040092554A external-priority patent/KR101115692B1/en
Priority claimed from KR1020040098152A external-priority patent/KR101125895B1/en
Priority claimed from KR1020040109647A external-priority patent/KR101125938B1/en
Priority claimed from KR1020040109221A external-priority patent/KR101126019B1/en
Priority claimed from KR1020040109218A external-priority patent/KR101126013B1/en
Priority claimed from KR1020040109217A external-priority patent/KR101125944B1/en
Priority claimed from KR1020040109220A external-priority patent/KR101125874B1/en
Application filed by Posco Co Ltd filed Critical Posco Co Ltd
Publication of EP1825014A1 publication Critical patent/EP1825014A1/en
Publication of EP1825014A4 publication Critical patent/EP1825014A4/en
Publication of EP1825014B1 publication Critical patent/EP1825014B1/en
Application granted granted Critical
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/08—Ferrous alloys, e.g. steel alloys containing nickel
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/16—Ferrous alloys, e.g. steel alloys containing copper

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Heat Treatment Of Sheet Steel (AREA)
  • Heat Treatment Of Steel (AREA)

Abstract

The invention relates to steel with excellent weather resistance, and a manufacturing method therefor. According to the invention, the steel consists of up to 0.15wt% C, up to 1.0wt% Si, up to 2.0wt% Mn, 0.2 to 1.0wt% Cu, 0.2 to 5.0wt% Ni, 0.001 to 0.1 wt% Al, up to 0.03wt% P, 0.002 to 0.03wt%S, 0.001 to 0.01wt% Ca. The balance contains Fe and unavoidable impurities, and Ca, S, Al, Si contents are determined by an Equation 1 Ca(%)/S(%) > 1.5Al(%)+2Si(%). Also, the steel has at least 30wt% water-soluble CaS inclusion out of Ca-based non-metallic inclusions. The invention provides steel with excellent weather resistance in an atmosphere having a high concentration of salinity.
EP05856389A 2004-11-12 2005-09-28 Method for manufacturing a steel with excellent weather resistance at sea atmosphere Active EP1825014B1 (en)

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
KR1020040092554A KR101115692B1 (en) 2004-11-12 2004-11-12 High strength steel with excellent weather resistance at the seaside atmosphere, and manufacturing method therefor
KR1020040098152A KR101125895B1 (en) 2004-11-26 2004-11-26 Producing method of weather resistable steel having excellent toughness and high strength for using at the seaside atmosphere
KR1020040109221A KR101126019B1 (en) 2004-12-21 2004-12-21 Producing method of weather resistable steel having excellent toughness and high strength for using at the seaside atmosphere
KR1020040109218A KR101126013B1 (en) 2004-12-21 2004-12-21 Producing method of weather resistable steel having excellent toughness, high strength and low yield ratio for using at the seaside atmosphere
KR1020040109647A KR101125938B1 (en) 2004-12-21 2004-12-21 Producing method of weather resistable steel having excellent toughness, high strength and low yield ratio for using at the seaside atmosphere
KR1020040109217A KR101125944B1 (en) 2004-12-21 2004-12-21 Producing method of weather resistable steel having excellent toughness and high strength for using at the seaside atmosphere
KR1020040109220A KR101125874B1 (en) 2004-12-21 2004-12-21 Producing method of weather resistable steel having excellent toughness and high strength for using at the seaside atmosphere
PCT/KR2005/003213 WO2006080658A1 (en) 2004-11-12 2005-09-28 Steel with excellent weather resistance at the seaside atmosphere, and manufacturing method therefor

Publications (3)

Publication Number Publication Date
EP1825014A1 EP1825014A1 (en) 2007-08-29
EP1825014A4 true EP1825014A4 (en) 2007-12-26
EP1825014B1 EP1825014B1 (en) 2012-04-11

Family

ID=36740646

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05856389A Active EP1825014B1 (en) 2004-11-12 2005-09-28 Method for manufacturing a steel with excellent weather resistance at sea atmosphere

Country Status (3)

Country Link
EP (1) EP1825014B1 (en)
AT (1) ATE553225T1 (en)
WO (1) WO2006080658A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6180956B2 (en) * 2014-02-13 2017-08-16 株式会社神戸製鋼所 Painted steel with excellent corrosion resistance
CN104002014B (en) * 2014-05-19 2016-01-27 南京钢铁股份有限公司 A kind of SMAW welding procedure of resistance to coastal region atmospheric corrosion steel

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0551668A (en) * 1991-08-27 1993-03-02 Nippon Steel Corp Seacost high corrosion resistance weather resistant steel
JPH0813087A (en) * 1994-06-24 1996-01-16 Nkk Corp Steel for welded steel pipe excellent in ssc resistance in seam zone
JP2000355730A (en) * 1999-06-16 2000-12-26 Kawasaki Steel Corp Coastal weather resistant steel excellent in toughness of heat-affected zone
KR20020041031A (en) * 2000-11-25 2002-06-01 이구택 Seaside corrosion resistance steel with superior tensile strength and method for manufacturing it
KR20030055534A (en) * 2001-12-27 2003-07-04 주식회사 포스코 A Method of Manufacturing Weather-Resistance Steel for Sheltered seaside Atmosphere

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3260232B2 (en) * 1993-03-15 2002-02-25 新日本製鐵株式会社 Manufacturing method of coastal high weather resistant clad steel sheet
JP2000017383A (en) * 1998-07-03 2000-01-18 Nippon Steel Corp High weathering steel
CA2333526A1 (en) * 1999-04-08 2000-10-19 Kawasaki Steel Corporation Corrosion resistant steel materials
KR100920597B1 (en) * 2002-12-28 2009-10-08 주식회사 포스코 Fabrication method of 50㎏ｆ / ㎠ class weatherproof steel with tensile strength
KR101091490B1 (en) * 2004-06-03 2011-12-07 주식회사 포스코 Steel with excellent weatherability of the beach and its manufacturing method

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0551668A (en) * 1991-08-27 1993-03-02 Nippon Steel Corp Seacost high corrosion resistance weather resistant steel
JPH0813087A (en) * 1994-06-24 1996-01-16 Nkk Corp Steel for welded steel pipe excellent in ssc resistance in seam zone
JP2000355730A (en) * 1999-06-16 2000-12-26 Kawasaki Steel Corp Coastal weather resistant steel excellent in toughness of heat-affected zone
KR20020041031A (en) * 2000-11-25 2002-06-01 이구택 Seaside corrosion resistance steel with superior tensile strength and method for manufacturing it
KR20030055534A (en) * 2001-12-27 2003-07-04 주식회사 포스코 A Method of Manufacturing Weather-Resistance Steel for Sheltered seaside Atmosphere

Also Published As

Publication number Publication date
EP1825014A1 (en) 2007-08-29
ATE553225T1 (en) 2012-04-15
WO2006080658A1 (en) 2006-08-03
EP1825014B1 (en) 2012-04-11

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Inventor name: LEE, JAE-SANG,POSCO

Inventor name: CHOI, JONG-KYO,POSCO

Inventor name: JUNG, EUI-GYEONG,POSCO

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