EP3395996A4 - Lean duplex stainless steel having improved corrosion resistance and machinability, and manufacturing method therefor - Google Patents
Lean duplex stainless steel having improved corrosion resistance and machinability, and manufacturing method therefor Download PDFInfo
- Publication number
- EP3395996A4 EP3395996A4 EP16879118.4A EP16879118A EP3395996A4 EP 3395996 A4 EP3395996 A4 EP 3395996A4 EP 16879118 A EP16879118 A EP 16879118A EP 3395996 A4 EP3395996 A4 EP 3395996A4
- Authority
- EP
- European Patent Office
- Prior art keywords
- machinability
- manufacturing
- stainless steel
- corrosion resistance
- 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.)
- Pending
Links
Classifications
-
- 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
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/46—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for sheet metals
-
- 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
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/004—Heat treatment of ferrous alloys containing Cr and Ni
-
- 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
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/005—Heat treatment of ferrous alloys containing Mn
-
- 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
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/008—Heat treatment of ferrous alloys containing Si
-
- 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
- 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
- C21D8/0236—Cold 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
- C22C38/001—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
- C22C38/18—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
- C22C38/58—Ferrous alloys, e.g. steel alloys containing chromium with nickel with more than 1.5% by weight of 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
- C22C38/60—Ferrous alloys, e.g. steel alloys containing lead, selenium, tellurium, or antimony, or more than 0.04% by weight of sulfur
-
- 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
- C21D2211/001—Austenite
-
- 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
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020150184697A KR101746404B1 (en) | 2015-12-23 | 2015-12-23 | Lean duplex stainless steel with improved corrosion resistance and formability and method of manufacturing the same |
PCT/KR2016/008881 WO2017111250A1 (en) | 2015-12-23 | 2016-08-12 | Lean duplex stainless steel having improved corrosion resistance and machinability, and manufacturing method therefor |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3395996A1 EP3395996A1 (en) | 2018-10-31 |
EP3395996A4 true EP3395996A4 (en) | 2019-03-06 |
Family
ID=59090649
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP16879118.4A Pending EP3395996A4 (en) | 2015-12-23 | 2016-08-12 | Lean duplex stainless steel having improved corrosion resistance and machinability, and manufacturing method therefor |
Country Status (6)
Country | Link |
---|---|
US (1) | US20190010573A1 (en) |
EP (1) | EP3395996A4 (en) |
JP (1) | JP6722286B2 (en) |
KR (1) | KR101746404B1 (en) |
CN (1) | CN108368592A (en) |
WO (1) | WO2017111250A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR102326323B1 (en) * | 2019-12-19 | 2021-11-12 | 주식회사 포스코 | A steel sheet having high abrasion resistance and corrosion resistance at sulfuric/hydrochloric acid condensing environment and manufacturing method the same |
CN113969332B (en) * | 2021-10-22 | 2023-01-17 | 昆明理工大学 | high-Mn ultralow-Ni dual-phase stainless steel and high-corrosion-resistance welding heat affected zone hot working method thereof |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2251449A1 (en) * | 2008-02-05 | 2010-11-17 | Nippon Steel & Sumikin Stainless Steel Corporation | Ferrite-austenite stainless steel sheet excellent in ridging resistance and workability and process for manufacturing the same |
WO2013081422A1 (en) * | 2011-11-30 | 2013-06-06 | (주)포스코 | Lean duplex stainless steel and preparation method thereof |
US20140219856A1 (en) * | 2011-09-07 | 2014-08-07 | Outokumpu Oyj | Duplex stainless steel |
KR20150073381A (en) * | 2013-12-23 | 2015-07-01 | 주식회사 포스코 | Duplex stainless steel with excellent resistance to stress corrosion cracking |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2765243B1 (en) | 1997-06-30 | 1999-07-30 | Usinor | AUSTENOFERRITIC STAINLESS STEEL WITH VERY LOW NICKEL AND HAVING A STRONG ELONGATION IN TRACTION |
KR20150024952A (en) * | 2008-03-26 | 2015-03-09 | 닛폰 스틸 앤드 스미킨 스테인레스 스틸 코포레이션 | Low-alloy duplex stainless steel wherein weld heat-affected zones have good corrosion resistance and toughness |
JP5335503B2 (en) * | 2009-03-19 | 2013-11-06 | 新日鐵住金ステンレス株式会社 | Duplex stainless steel sheet with excellent press formability |
KR101504401B1 (en) * | 2012-11-30 | 2015-03-19 | 주식회사 포스코 | Super ductile lean duplex stainless steel and manufacturing method thereof |
CA2932068C (en) * | 2013-12-13 | 2023-01-03 | Outokumpu Oyj | Method for producing high-strength duplex stainless steel |
-
2015
- 2015-12-23 KR KR1020150184697A patent/KR101746404B1/en active IP Right Grant
-
2016
- 2016-08-12 WO PCT/KR2016/008881 patent/WO2017111250A1/en active Application Filing
- 2016-08-12 CN CN201680071314.8A patent/CN108368592A/en active Pending
- 2016-08-12 JP JP2018528233A patent/JP6722286B2/en active Active
- 2016-08-12 US US16/065,791 patent/US20190010573A1/en not_active Abandoned
- 2016-08-12 EP EP16879118.4A patent/EP3395996A4/en active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2251449A1 (en) * | 2008-02-05 | 2010-11-17 | Nippon Steel & Sumikin Stainless Steel Corporation | Ferrite-austenite stainless steel sheet excellent in ridging resistance and workability and process for manufacturing the same |
US20140219856A1 (en) * | 2011-09-07 | 2014-08-07 | Outokumpu Oyj | Duplex stainless steel |
WO2013081422A1 (en) * | 2011-11-30 | 2013-06-06 | (주)포스코 | Lean duplex stainless steel and preparation method thereof |
KR20150073381A (en) * | 2013-12-23 | 2015-07-01 | 주식회사 포스코 | Duplex stainless steel with excellent resistance to stress corrosion cracking |
Non-Patent Citations (1)
Title |
---|
See also references of WO2017111250A1 * |
Also Published As
Publication number | Publication date |
---|---|
US20190010573A1 (en) | 2019-01-10 |
KR101746404B1 (en) | 2017-06-14 |
JP6722286B2 (en) | 2020-07-15 |
EP3395996A1 (en) | 2018-10-31 |
JP2019501286A (en) | 2019-01-17 |
WO2017111250A1 (en) | 2017-06-29 |
CN108368592A (en) | 2018-08-03 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP3214194A4 (en) | Austenitic stainless steel and manufacturing method therefor | |
EP3282031A4 (en) | Heat-treated steel sheet member, and production method therefor | |
EP3399062A4 (en) | High-strength steel sheet, high-strength galvanized steel sheet, and method for manufacturing same | |
HK1254792A1 (en) | High-strength stainless steel sheet having excellent fatigue characteristics, and method for manufacturing same | |
EP3282030A4 (en) | Heat-treated steel sheet member, and production method therefor | |
EP3312299A4 (en) | Steel sheet and manufacturing method | |
EP3269895B8 (en) | Metal roofing member, and roofing structure and roofing method using same | |
EP3508596A4 (en) | Duplex stainless steel and method for manufacturing same | |
EP3508602A4 (en) | Austenitic stainless steel | |
EP3305931A4 (en) | Steel sheet and manufacturing method therefor | |
EP3358030A4 (en) | Austenitic stainless steel and method for producing austenitic stainless steel | |
EP3074544B8 (en) | Martensitic stainless steel, part made of said steel and method for manufacturing same | |
EP3427852A4 (en) | Method for manufacturing different-thickness steel pipe, and different-thickness steel pipe | |
EP3278888A4 (en) | Austenitic stainless steel sheet, cover member, and method for producing austenitic stainless steel sheet | |
EP3178958A4 (en) | Austenitic stainless steel | |
EP3034642A4 (en) | Martensitic stainless steel having excellent wear resistance and corrosion resistance, and method for producing same | |
EP3339464A4 (en) | High-hardness steel sheet, and manufacturing method therefor | |
AP2016009298A0 (en) | Corrosion resistant duplex steel alloy, objects made thereof, and method of making the alloy | |
EP3467132A4 (en) | Duplex stainless steel and duplex stainless steel manufacturing method | |
EP3339460A4 (en) | VIBRATION-DAMPING FERRITIC STAINLESS STEEL MATERIAL HAVING HIGH Al CONTENT, AND PRODUCTION METHOD | |
EP3287536A4 (en) | Martensitic stainless steel | |
EP3480330A4 (en) | Austenitic stainless steel | |
EP3339459A4 (en) | Vibration-damping ferritic stainless steel material, and production method | |
EP3239358A4 (en) | Plated steel sheet having excellent adhesion property and manufacturing method therefor | |
EP3382051A4 (en) | Steel, carburized steel component, and carburized steel component production method |
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: 20180604 |
|
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 |
|
AX | Request for extension of the european patent |
Extension state: BA ME |
|
A4 | Supplementary search report drawn up and despatched |
Effective date: 20190205 |
|
RIC1 | Information provided on ipc code assigned before grant |
Ipc: C21D 8/02 20060101ALI20190130BHEP Ipc: C21D 9/46 20060101ALI20190130BHEP Ipc: C22C 38/60 20060101ALI20190130BHEP Ipc: C22C 38/46 20060101ALI20190130BHEP Ipc: C22C 38/00 20060101ALI20190130BHEP Ipc: C21D 6/00 20060101ALI20190130BHEP Ipc: C22C 38/02 20060101ALI20190130BHEP Ipc: C22C 38/42 20060101ALI20190130BHEP Ipc: C22C 38/44 20060101ALI20190130BHEP Ipc: C22C 38/58 20060101AFI20190130BHEP Ipc: C22C 38/50 20060101ALI20190130BHEP Ipc: C22C 38/48 20060101ALI20190130BHEP |
|
DAV | Request for validation of the european patent (deleted) | ||
DAX | Request for extension of the european patent (deleted) | ||
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: 20210311 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: EXAMINATION IS IN PROGRESS |
|
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 |