EP3395997A4 - Low-yield-ratio type high-strength steel, and manufacturing method therefor - Google Patents
Low-yield-ratio type high-strength steel, and manufacturing method therefor Download PDFInfo
- Publication number
- EP3395997A4 EP3395997A4 EP16879212.5A EP16879212A EP3395997A4 EP 3395997 A4 EP3395997 A4 EP 3395997A4 EP 16879212 A EP16879212 A EP 16879212A EP 3395997 A4 EP3395997 A4 EP 3395997A4
- Authority
- EP
- European Patent Office
- Prior art keywords
- yield
- manufacturing
- low
- type high
- strength steel
- 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
- C22C38/18—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
- 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
-
- 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
- C21D8/0205—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips of ferrous alloys
-
- 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
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
-
- 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
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
-
- 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
- C22C38/008—Ferrous alloys, e.g. steel alloys containing tin
-
- 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
- C22C38/42—Ferrous alloys, e.g. steel alloys containing chromium with nickel with copper
-
- 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
- C22C38/46—Ferrous alloys, e.g. steel alloys containing chromium with nickel with vanadium
-
- 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
- C22C38/54—Ferrous alloys, e.g. steel alloys containing chromium with nickel with boron
-
- 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 |
---|---|---|---|
KR1020150186522A KR102348539B1 (en) | 2015-12-24 | 2015-12-24 | High strength steel having low yield ratio method for manufacturing the same |
PCT/KR2016/014135 WO2017111345A1 (en) | 2015-12-24 | 2016-12-02 | Low-yield-ratio type high-strength steel, and manufacturing method therefor |
Publications (3)
Publication Number | Publication Date |
---|---|
EP3395997A1 EP3395997A1 (en) | 2018-10-31 |
EP3395997A4 true EP3395997A4 (en) | 2018-11-07 |
EP3395997B1 EP3395997B1 (en) | 2020-09-02 |
Family
ID=59090793
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP16879212.5A Active EP3395997B1 (en) | 2015-12-24 | 2016-12-02 | Low-yield-ratio type high-strength steel, and manufacturing method therefor |
Country Status (6)
Country | Link |
---|---|
US (1) | US20180371590A1 (en) |
EP (1) | EP3395997B1 (en) |
JP (1) | JP6845855B2 (en) |
KR (1) | KR102348539B1 (en) |
CN (1) | CN108474090B (en) |
WO (1) | WO2017111345A1 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101879082B1 (en) * | 2016-12-21 | 2018-07-16 | 주식회사 포스코 | Ultra high strength steel having low yield ratio method for manufacturing the same |
KR102109277B1 (en) * | 2018-10-26 | 2020-05-11 | 주식회사 포스코 | Steel plate having low yield ratio and excellent heat affected zone toughness and method for manufacturing thereof |
KR102255818B1 (en) * | 2019-06-24 | 2021-05-25 | 주식회사 포스코 | High strength steel for a structure having excellent corrosion resistance and manufacturing method for the same |
KR102307903B1 (en) * | 2019-11-04 | 2021-09-30 | 주식회사 포스코 | Steel plate having high strength and excellent low-temperature impact toughness and method for manufacturing thereof |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5597425A (en) * | 1979-01-19 | 1980-07-24 | Nippon Kokan Kk <Nkk> | Preparation of high-tensile steel with low yield ratio, low carbon and low alloy |
JPH0551694A (en) * | 1991-08-20 | 1993-03-02 | Nkk Corp | High tensile strength steel with low yield ratio and its production |
WO2008054166A1 (en) * | 2006-11-02 | 2008-05-08 | Posco | Steel plate for linepipe having ultra-high strength and excellent low temperature toughness and manufacturing method of the same |
KR20090052950A (en) * | 2007-11-22 | 2009-05-27 | 주식회사 포스코 | High strength and low yield ratio steel for structure having excellent low temperature toughness |
EP2700728A1 (en) * | 2011-04-21 | 2014-02-26 | Nippon Steel & Sumitomo Metal Corporation | High-strength cold-rolled steel sheet with highly even stretchabilty and excellent hole expansibility, and process for producing same |
WO2014171062A1 (en) * | 2013-04-15 | 2014-10-23 | Jfeスチール株式会社 | High-strength hot-rolled steel sheet and method for manufacturing same |
KR20150002958A (en) * | 2013-06-27 | 2015-01-08 | 현대제철 주식회사 | Steel and method of manufacturing the same |
KR20150074968A (en) * | 2013-12-24 | 2015-07-02 | 주식회사 포스코 | Hot rolled steel sheet having a good low temperature toughness and method for manufacturing the same |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5223375B2 (en) * | 2007-03-01 | 2013-06-26 | 新日鐵住金株式会社 | High-strength hot-rolled steel sheet for line pipe excellent in low-temperature toughness and method for producing the same |
JP4972451B2 (en) * | 2007-04-20 | 2012-07-11 | 株式会社神戸製鋼所 | Low yield ratio high strength steel sheet with excellent low temperature toughness of weld heat affected zone and base metal and method for producing the same |
KR101096992B1 (en) * | 2008-03-27 | 2011-12-20 | 가부시키가이샤 고베 세이코쇼 | 780MPa CLASS LOW YIELD RATIO CIRCULAR STEEL FOR CONSTRUCTION STRUCTURE EXCELLENT IN EARTHQUAKE-PROOF PERFORMANCE, AND PROCESS FOR PRODUCING THE SAME |
JP5162382B2 (en) * | 2008-09-03 | 2013-03-13 | 株式会社神戸製鋼所 | Low yield ratio high toughness steel plate |
KR101070132B1 (en) * | 2008-12-18 | 2011-10-05 | 주식회사 포스코 | Steel with Excellent Low-Temperature Toughness for Construction and Manufacturing Method Thereof |
JP5776398B2 (en) * | 2011-02-24 | 2015-09-09 | Jfeスチール株式会社 | Low yield ratio high strength hot rolled steel sheet with excellent low temperature toughness and method for producing the same |
KR101546124B1 (en) * | 2013-03-28 | 2015-08-20 | 현대제철 주식회사 | Hot-rolled steel and method of manufacturing the same |
WO2014162680A1 (en) * | 2013-04-04 | 2014-10-09 | Jfeスチール株式会社 | Hot-rolled steel sheet and method for manufacturing same |
JP5783229B2 (en) * | 2013-11-28 | 2015-09-24 | Jfeスチール株式会社 | Hot-rolled steel sheet and manufacturing method thereof |
CN105555983B (en) * | 2013-12-25 | 2018-01-09 | 新日铁住金株式会社 | Oil well electric welded steel pipe |
-
2015
- 2015-12-24 KR KR1020150186522A patent/KR102348539B1/en active IP Right Grant
-
2016
- 2016-12-02 US US16/063,985 patent/US20180371590A1/en not_active Abandoned
- 2016-12-02 JP JP2018532049A patent/JP6845855B2/en active Active
- 2016-12-02 EP EP16879212.5A patent/EP3395997B1/en active Active
- 2016-12-02 WO PCT/KR2016/014135 patent/WO2017111345A1/en active Application Filing
- 2016-12-02 CN CN201680075889.7A patent/CN108474090B/en active Active
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5597425A (en) * | 1979-01-19 | 1980-07-24 | Nippon Kokan Kk <Nkk> | Preparation of high-tensile steel with low yield ratio, low carbon and low alloy |
JPH0551694A (en) * | 1991-08-20 | 1993-03-02 | Nkk Corp | High tensile strength steel with low yield ratio and its production |
WO2008054166A1 (en) * | 2006-11-02 | 2008-05-08 | Posco | Steel plate for linepipe having ultra-high strength and excellent low temperature toughness and manufacturing method of the same |
KR20090052950A (en) * | 2007-11-22 | 2009-05-27 | 주식회사 포스코 | High strength and low yield ratio steel for structure having excellent low temperature toughness |
EP2700728A1 (en) * | 2011-04-21 | 2014-02-26 | Nippon Steel & Sumitomo Metal Corporation | High-strength cold-rolled steel sheet with highly even stretchabilty and excellent hole expansibility, and process for producing same |
WO2014171062A1 (en) * | 2013-04-15 | 2014-10-23 | Jfeスチール株式会社 | High-strength hot-rolled steel sheet and method for manufacturing same |
KR20150002958A (en) * | 2013-06-27 | 2015-01-08 | 현대제철 주식회사 | Steel and method of manufacturing the same |
KR20150074968A (en) * | 2013-12-24 | 2015-07-02 | 주식회사 포스코 | Hot rolled steel sheet having a good low temperature toughness and method for manufacturing the same |
Also Published As
Publication number | Publication date |
---|---|
KR20170076912A (en) | 2017-07-05 |
CN108474090B (en) | 2021-02-12 |
JP6845855B2 (en) | 2021-03-24 |
JP2019504199A (en) | 2019-02-14 |
CN108474090A (en) | 2018-08-31 |
WO2017111345A1 (en) | 2017-06-29 |
EP3395997A1 (en) | 2018-10-31 |
EP3395997B1 (en) | 2020-09-02 |
KR102348539B1 (en) | 2022-01-07 |
US20180371590A1 (en) | 2018-12-27 |
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