EP3889305A4 - High-strength steel plate having excellent low-temperature fracture toughness and elongation ratio, and manufacturing method therefor - Google Patents
High-strength steel plate having excellent low-temperature fracture toughness and elongation ratio, and manufacturing method therefor Download PDFInfo
- Publication number
- EP3889305A4 EP3889305A4 EP19889727.4A EP19889727A EP3889305A4 EP 3889305 A4 EP3889305 A4 EP 3889305A4 EP 19889727 A EP19889727 A EP 19889727A EP 3889305 A4 EP3889305 A4 EP 3889305A4
- Authority
- EP
- European Patent Office
- Prior art keywords
- manufacturing
- steel plate
- strength steel
- method therefor
- fracture toughness
- 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
Links
- 229910000831 Steel Inorganic materials 0.000 title 1
- 238000004519 manufacturing process Methods 0.000 title 1
- 239000010959 steel Substances 0.000 title 1
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
- C22C38/001—Ferrous alloys, e.g. steel alloys containing N
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/0221—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
- C21D8/0226—Hot rolling
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/0247—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment
- C21D8/0263—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment following hot rolling
-
- 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
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
-
- 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
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
-
- 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
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
-
- 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
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/48—Ferrous alloys, e.g. steel alloys containing chromium with nickel with niobium or tantalum
-
- 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
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/50—Ferrous alloys, e.g. steel alloys containing chromium with nickel with titanium or zirconium
-
- 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
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/58—Ferrous alloys, e.g. steel alloys containing chromium with nickel with more than 1.5% by weight of manganese
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D2211/00—Microstructure comprising significant phases
- C21D2211/002—Bainite
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D2211/00—Microstructure comprising significant phases
- C21D2211/005—Ferrite
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D2211/00—Microstructure comprising significant phases
- C21D2211/008—Martensite
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Heat Treatment Of Steel (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020180151565A KR102164107B1 (en) | 2018-11-30 | 2018-11-30 | High strength steel plate having superior elongation percentage and excellent low-temperature toughness, and manufacturing method for the same |
PCT/KR2019/016785 WO2020111891A1 (en) | 2018-11-30 | 2019-11-29 | High-strength steel plate having excellent low-temperature fracture toughness and elongation ratio, and manufacturing method therefor |
Publications (4)
Publication Number | Publication Date |
---|---|
EP3889305A4 true EP3889305A4 (en) | 2021-10-06 |
EP3889305A1 EP3889305A1 (en) | 2021-10-06 |
EP3889305B1 EP3889305B1 (en) | 2024-04-10 |
EP3889305C0 EP3889305C0 (en) | 2024-04-10 |
Family
ID=70854099
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19889727.4A Active EP3889305B1 (en) | 2018-11-30 | 2019-11-29 | High-strength steel plate having excellent low-temperature fracture toughness and elongation ratio, and manufacturing method therefor |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP3889305B1 (en) |
JP (1) | JP7372325B2 (en) |
KR (1) | KR102164107B1 (en) |
CN (1) | CN113166904B (en) |
CA (1) | CA3120271C (en) |
RU (1) | RU2771151C1 (en) |
WO (1) | WO2020111891A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112611656B (en) * | 2020-12-14 | 2024-03-08 | 中南大学 | Accurate measurement method for low-temperature elongation of aluminum alloy for aerospace |
KR102393906B1 (en) * | 2020-12-18 | 2022-05-03 | 주식회사 포스코 | Method of predicting to dwtt transition temperature |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2009072753A1 (en) * | 2007-12-04 | 2009-06-11 | Posco | High-strength steel sheet with excellent low temperature toughness and manufacturing method thereof |
KR20120073408A (en) * | 2010-12-27 | 2012-07-05 | 주식회사 포스코 | Steel plate for pipeline with excellent fracture arrestability and low yield ratio, and manufacturing method of the same |
KR20130073472A (en) * | 2011-12-23 | 2013-07-03 | 주식회사 포스코 | Linepipe steel plate with excellent low temperature fracture toughness and high uniform elongation method for producing same |
KR20140083540A (en) * | 2012-12-26 | 2014-07-04 | 주식회사 포스코 | Steel plate for line pipe having superior uniform elongation ratio and low-temperature toughness |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AU736035B2 (en) * | 1997-07-28 | 2001-07-26 | Exxonmobil Upstream Research Company | Ultra-high strength, weldable steels with excellent ultra-low temperature toughness |
JP3968011B2 (en) * | 2002-05-27 | 2007-08-29 | 新日本製鐵株式会社 | High strength steel excellent in low temperature toughness and weld heat affected zone toughness, method for producing the same and method for producing high strength steel pipe |
JP4823841B2 (en) * | 2006-10-12 | 2011-11-24 | 新日本製鐵株式会社 | High tensile strength steel sheet for super high heat input welding with low acoustic anisotropy and excellent weldability and tensile strength of 570 MPa class or more and method for producing the same |
KR100951296B1 (en) * | 2007-12-04 | 2010-04-02 | 주식회사 포스코 | Steel plate for linepipe having high strength and excellent low temperature toughness and manufacturing method of the same |
RU2518830C1 (en) * | 2010-06-30 | 2014-06-10 | Ниппон Стил Энд Сумитомо Метал Корпорейшн | Hot-rolled steel sheet and method of its production |
CN105143487B (en) * | 2013-08-30 | 2017-03-08 | 新日铁住金株式会社 | The thick section and high strength spool steel plate of acid resistance, resistance to crushing characteristic and excellent in low temperature toughness and spool |
JP6354271B2 (en) * | 2014-04-08 | 2018-07-11 | 新日鐵住金株式会社 | High-strength hot-rolled steel sheet having a tensile strength of 780 MPa or more and excellent in low-temperature toughness, uniform elongation and hole expansibility, and a method for producing the same |
CN104789863B (en) * | 2015-03-20 | 2017-01-18 | 宝山钢铁股份有限公司 | X80 pipeline steel with good anti-strain aging property, pipeline pipe and manufacturing method of pipeline pipe |
KR101889182B1 (en) | 2016-12-20 | 2018-08-16 | 주식회사 포스코 | Steel plate for welded steel pipe having excellent elogation of the longitudinal direction and toughness at low-temperature, method for manufacturing thereof and welded steel pipe using same |
CN108467993B (en) * | 2018-06-11 | 2020-02-18 | 鞍钢股份有限公司 | Ultra-wide high-toughness hot-rolled thick plate for low-temperature pipeline and production method thereof |
-
2018
- 2018-11-30 KR KR1020180151565A patent/KR102164107B1/en active IP Right Grant
-
2019
- 2019-11-29 JP JP2021530865A patent/JP7372325B2/en active Active
- 2019-11-29 CA CA3120271A patent/CA3120271C/en active Active
- 2019-11-29 RU RU2021118464A patent/RU2771151C1/en active
- 2019-11-29 WO PCT/KR2019/016785 patent/WO2020111891A1/en unknown
- 2019-11-29 EP EP19889727.4A patent/EP3889305B1/en active Active
- 2019-11-29 CN CN201980078794.4A patent/CN113166904B/en active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2009072753A1 (en) * | 2007-12-04 | 2009-06-11 | Posco | High-strength steel sheet with excellent low temperature toughness and manufacturing method thereof |
KR20120073408A (en) * | 2010-12-27 | 2012-07-05 | 주식회사 포스코 | Steel plate for pipeline with excellent fracture arrestability and low yield ratio, and manufacturing method of the same |
KR20130073472A (en) * | 2011-12-23 | 2013-07-03 | 주식회사 포스코 | Linepipe steel plate with excellent low temperature fracture toughness and high uniform elongation method for producing same |
KR20140083540A (en) * | 2012-12-26 | 2014-07-04 | 주식회사 포스코 | Steel plate for line pipe having superior uniform elongation ratio and low-temperature toughness |
Also Published As
Publication number | Publication date |
---|---|
JP7372325B2 (en) | 2023-10-31 |
WO2020111891A1 (en) | 2020-06-04 |
EP3889305B1 (en) | 2024-04-10 |
RU2771151C1 (en) | 2022-04-27 |
CA3120271C (en) | 2023-09-12 |
EP3889305C0 (en) | 2024-04-10 |
JP2022510935A (en) | 2022-01-28 |
CN113166904A (en) | 2021-07-23 |
KR102164107B1 (en) | 2020-10-13 |
CN113166904B (en) | 2023-10-27 |
EP3889305A1 (en) | 2021-10-06 |
CA3120271A1 (en) | 2020-06-04 |
KR20200066394A (en) | 2020-06-10 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP3611287A4 (en) | S355g10+m wide and heavy steel plate having low-temperature toughness for ocean engineering, and method for manufacturing same | |
EP3561119A4 (en) | Tempered martensitic steel having low yield ratio and excellent uniform elongation, and manufacturing method therefor | |
EP3533894A4 (en) | Cold-rolled high-strength steel having tensile strength of not less than 1500 mpa and excellent formability, and manufacturing method therefor | |
ZA202003349B (en) | Steel sheet having excellent toughness, ductility and strength, and manufacturing method thereof | |
EP3757243A4 (en) | High-strength galvanized steel sheet, high-strength member, and manufacturing methods therefor | |
EP3272899A4 (en) | Low-yield-ratio high-strength-toughness thick steel plate with excellent low-temperature impact toughness and manufacturing method therefor | |
EP3279362A4 (en) | HIGH-STRENGTH COLD-ROLLED STEEL SHEET HAVING EXCELLENT WORKABILITY AND COLLISION CHARACTERISTICS AND HAVING TENSILE STRENGTH OF 980 MPa OR MORE, AND METHOD FOR PRODUCING SAME | |
EP3279363A4 (en) | HIGH-STRENGTH COLD-ROLLED STEEL SHEET HAVING EXCELLENT WORKABILITY AND COLLISION CHARACTERISTICS AND HAVING TENSILE STRENGTH OF 980 MPa OR MORE, AND METHOD FOR PRODUCING SAME | |
EP3712291A4 (en) | Low-temperature steel plate having excellent impact toughness, and method for manufacturing same | |
PL2907886T3 (en) | High-strength hot-rolled steel sheet having maximum tensile strength of 980 mpa or more, and having excellent and baking hardenability and low-temperature toughness | |
EP3896185A4 (en) | High-strength steel plate having excellent formability, toughness and weldability, and production method of same | |
MX2017007511A (en) | High-strength cold-rolled steel sheet and method for producing same. | |
EP3754043A4 (en) | High-strength galvanized steel sheet, high-strength member, and manufacturing methods therefor | |
EP3438315A4 (en) | High-strength cold rolled steel sheet with excellent yield strength and ductility, coated steel plate, and method for manufacturing same | |
EP4056725A4 (en) | Steel plate having high strength and excellent low-temperature impact toughness and method for manufacturing thereof | |
EP3604584A4 (en) | High-strength steel plate for sour resistant line pipe, method for manufacturing same, and high-strength steel pipe using high-strength steel plate for sour resistant line pipe | |
CA3025617C (en) | Method for producing a twip steel sheet having an austenitic microstructure | |
EP3889296A4 (en) | High-strength steel sheet having excellent ductility and low-temperature toughness and method for manufacturing thereof | |
EP3705592A4 (en) | High-strength cold-rolled steel sheet, high-strength plated steel sheet, and production methods therefor | |
EP3828298A4 (en) | High yield ratio, high strength electro-galvanized steel sheet, and manufacturing method thereof | |
EP3889304A4 (en) | High strength thick steel plate for linepipe having excellent low temperature toughness and ductility as well as low yield ratio, and method thereof | |
EP3889298A4 (en) | High-strength steel with excellent durability and method for manufacturing same | |
EP3730640A4 (en) | Thick steel plate having excellent low-temperature toughness and manufacturing method therefor | |
EP3748029A4 (en) | High-strength galvanized steel sheet, high-strength member, and manufacturing methods therefor | |
EP3730647A4 (en) | High-strength hot-rolled steel sheet having excellent bendability and low-temperature toughness and method for manufacturing same |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE |
|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE |
|
17P | Request for examination filed |
Effective date: 20210610 |
|
A4 | Supplementary search report drawn up and despatched |
Effective date: 20210903 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
DAV | Request for validation of the european patent (deleted) | ||
DAX | Request for extension of the european patent (deleted) | ||
RAP3 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: POSCO HOLDINGS INC. |
|
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: POSCO CO., LTD |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: EXAMINATION IS IN PROGRESS |
|
17Q | First examination report despatched |
Effective date: 20230404 |
|
GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: GRANT OF PATENT IS INTENDED |
|
INTG | Intention to grant announced |
Effective date: 20231113 |
|
GRAS | Grant fee paid |
Free format text: ORIGINAL CODE: EPIDOSNIGR3 |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE PATENT HAS BEEN GRANTED |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: FG4D |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: EP |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R096 Ref document number: 602019050241 Country of ref document: DE |
|
REG | Reference to a national code |
Ref country code: IE Ref legal event code: FG4D |
|
U01 | Request for unitary effect filed |
Effective date: 20240411 |
|
U07 | Unitary effect registered |
Designated state(s): AT BE BG DE DK EE FI FR IT LT LU LV MT NL PT SE SI Effective date: 20240419 |