EP2418296A4 - Steel for case hardening which has excellent cold workability and machinability and which exhibits excellent fatigue characteristics after carburizing and quenching, and process for production of same - Google Patents

Steel for case hardening which has excellent cold workability and machinability and which exhibits excellent fatigue characteristics after carburizing and quenching, and process for production of same Download PDF

Info

Publication number
EP2418296A4
EP2418296A4 EP09843061.4A EP09843061A EP2418296A4 EP 2418296 A4 EP2418296 A4 EP 2418296A4 EP 09843061 A EP09843061 A EP 09843061A EP 2418296 A4 EP2418296 A4 EP 2418296A4
Authority
EP
European Patent Office
Prior art keywords
carburizing
machinability
quenching
steel
production
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
EP09843061.4A
Other languages
German (de)
French (fr)
Other versions
EP2418296A1 (en
EP2418296B1 (en
Inventor
Masayuki Hashimura
Kei Miyanishi
Shuji Kozawa
Manabu Kubota
Tatsuro Ochi
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.)
Nippon Steel Corp
Original Assignee
Nippon Steel and Sumitomo Metal Corp
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
Application filed by Nippon Steel and Sumitomo Metal Corp filed Critical Nippon Steel and Sumitomo Metal Corp
Publication of EP2418296A1 publication Critical patent/EP2418296A1/en
Publication of EP2418296A4 publication Critical patent/EP2418296A4/en
Application granted granted Critical
Publication of EP2418296B1 publication Critical patent/EP2418296B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/06—Surface hardening
    • 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
    • C22C1/00—Making non-ferrous alloys
    • C22C1/02—Making non-ferrous alloys by melting
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C1/00—Making non-ferrous alloys
    • C22C1/11—Making amorphous 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
    • 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
    • C22C38/02—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
    • C22C38/22—Ferrous alloys, e.g. steel alloys containing chromium 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
    • C22C38/24—Ferrous alloys, e.g. steel alloys containing chromium 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
    • C22C38/26—Ferrous alloys, e.g. steel alloys containing chromium 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
    • C22C38/28—Ferrous alloys, e.g. steel alloys containing chromium 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
    • C22C38/32—Ferrous alloys, e.g. steel alloys containing chromium with boron
    • 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
    • C22C38/38—Ferrous alloys, e.g. steel alloys containing chromium 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
    • C22C38/18—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
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C8/06—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases
    • C23C8/28—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases more than one element being applied in one step
    • C23C8/30—Carbo-nitriding
    • C23C8/32—Carbo-nitriding of ferrous surfaces
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C8/80—After-treatment

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)
  • Chemical Kinetics & Catalysis (AREA)
  • Heat Treatment Of Steel (AREA)
  • Heat Treatment Of Articles (AREA)
EP09843061.4A 2009-04-06 2009-10-14 Case hardening steel superior in cold workability, machinability and fatigue characteristics after carburized quenching and method of production of same Active EP2418296B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2009092176 2009-04-06
PCT/JP2009/068083 WO2010116555A1 (en) 2009-04-06 2009-10-14 Steel for case hardening which has excellent cold workability and machinability and which exhibits excellent fatigue characteristics after carburizing and quenching, and process for production of same

Publications (3)

Publication Number Publication Date
EP2418296A1 EP2418296A1 (en) 2012-02-15
EP2418296A4 true EP2418296A4 (en) 2017-05-17
EP2418296B1 EP2418296B1 (en) 2020-02-26

Family

ID=42935858

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09843061.4A Active EP2418296B1 (en) 2009-04-06 2009-10-14 Case hardening steel superior in cold workability, machinability and fatigue characteristics after carburized quenching and method of production of same

Country Status (8)

Country Link
US (1) US20120018063A1 (en)
EP (1) EP2418296B1 (en)
KR (1) KR101367350B1 (en)
CN (1) CN102378822B (en)
AU (1) AU2009343864B2 (en)
BR (1) BRPI0925071B1 (en)
CA (1) CA2757393C (en)
WO (1) WO2010116555A1 (en)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5432105B2 (en) * 2010-09-28 2014-03-05 株式会社神戸製鋼所 Case-hardened steel and method for producing the same
JP5783014B2 (en) * 2011-11-29 2015-09-24 新日鐵住金株式会社 Steel bar for bearing
JP5783056B2 (en) * 2012-01-18 2015-09-24 新日鐵住金株式会社 Carburized bearing steel
JP5825157B2 (en) * 2012-03-12 2015-12-02 新日鐵住金株式会社 Induction hardening steel
JP5783101B2 (en) 2012-03-22 2015-09-24 新日鐵住金株式会社 Steel for nitriding
JP5224424B1 (en) * 2012-05-07 2013-07-03 山陽特殊製鋼株式会社 Steel with excellent rolling fatigue life
CN102703817B (en) * 2012-06-29 2014-04-16 中天钢铁集团有限公司 Free-machining pinion steel and production technique thereof
KR20150126699A (en) * 2013-04-18 2015-11-12 신닛테츠스미킨 카부시키카이샤 Case-hardening steel material and case-hardening steel member
JP6226071B2 (en) * 2015-01-27 2017-11-08 Ｊｆｅスチール株式会社 Case-hardened steel
KR102006093B1 (en) * 2015-03-31 2019-07-31 닛폰세이테츠 가부시키가이샤 Progressive steel parts
KR101705168B1 (en) * 2015-04-20 2017-02-10 현대자동차주식회사 Carburizing alloy steel improved durability and the method of manufacturing the same
JP6468366B2 (en) * 2015-11-27 2019-02-13 新日鐵住金株式会社 Steel, carburized steel parts, and method of manufacturing carburized steel parts
WO2018021452A1 (en) * 2016-07-27 2018-02-01 新日鐵住金株式会社 Steel for machine structures
CN109689911B (en) * 2016-09-09 2021-10-12 杰富意钢铁株式会社 Case hardening steel, method for producing same, and method for producing gear member
KR102386638B1 (en) * 2017-08-25 2022-04-14 닛폰세이테츠 가부시키가이샤 Steel for carburized bearing parts
KR102373224B1 (en) 2018-01-22 2022-03-11 닛폰세이테츠 가부시키가이샤 Carburized bearing steel parts and steel bars for carburized bearing steel parts
CN113106341B (en) * 2021-03-31 2022-04-12 武汉科技大学 High-strength and high-toughness weldable corrosion-resistant wear-resistant steel plate and preparation method thereof
CN113122782B (en) * 2021-04-21 2022-03-15 浙江中煤机械科技有限公司 Stainless steel for pump head body and preparation method thereof
CN113234998B (en) * 2021-04-21 2022-06-21 马鞍山钢铁股份有限公司 Nb-Ti microalloyed high temperature resistant carburized gear steel and manufacturing method thereof
CN115466900B (en) * 2022-09-20 2023-08-01 西华大学 Method for improving fatigue resistance of automobile crankshaft

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11236646A (en) * 1997-12-15 1999-08-31 Sumitomo Metal Ind Ltd Grain coarsening-resistant case hardening steel, surface hardened parts excellent in strength and toughness and production thereof
JP2002069573A (en) * 2000-08-30 2002-03-08 Nippon Steel Corp Case-hardening steel excellent in torsional fatigue characteristic, and case-hardened parts
JP2005220423A (en) * 2004-02-06 2005-08-18 Kobe Steel Ltd Ti-CONTAINING CASE HARDENING STEEL
JP2007031787A (en) * 2005-07-27 2007-02-08 Kobe Steel Ltd Case-hardened steel having superior grain coarsening resistance, fatigue characteristic and machinability, and manufacturing method therefor

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0559225B1 (en) * 1992-03-06 1999-02-10 Kawasaki Steel Corporation Producing steel sheet having high tensile strength and excellent stretch flanging formability
FI971257A (en) * 1997-03-26 1998-09-27 Imatra Steel Oy Ab Cold Forging Process
FR2765890B1 (en) * 1997-07-10 1999-08-20 Ascometal Sa PROCESS FOR MANUFACTURING A MECHANICAL PART IN CEMENTED OR CARBONITRIDE STEEL AND STEEL FOR THE MANUFACTURE OF SUCH A PART
JP3764586B2 (en) 1998-05-22 2006-04-12 新日本製鐵株式会社 Manufacturing method of case-hardened steel with excellent cold workability and low carburizing strain characteristics
JP3954772B2 (en) 2000-04-26 2007-08-08 新日本製鐵株式会社 Shaped material for high-temperature carburized parts with excellent grain coarsening prevention characteristics and manufacturing method thereof
JP3738003B2 (en) 2002-12-04 2006-01-25 新日本製鐵株式会社 Steel for case hardening excellent in cold workability and properties of preventing coarse grains during carburizing and method for producing the same
JP3738004B2 (en) 2002-12-24 2006-01-25 新日本製鐵株式会社 Case-hardening steel with excellent cold workability and prevention of coarse grains during carburizing, and its manufacturing method
JP4252837B2 (en) * 2003-04-16 2009-04-08 Ｊｆｅスチール株式会社 Steel material with excellent rolling fatigue life and method for producing the same
JP4448456B2 (en) 2004-01-29 2010-04-07 新日本製鐵株式会社 Case-hardened steel with excellent coarse grain prevention and fatigue characteristics during carburizing and its manufacturing method
KR100883716B1 (en) * 2004-07-16 2009-02-12 제이에프이 스틸 가부시키가이샤 Composition for Machine Structure, Method of Producing the Same and Material for Induction Hardening
JP4919338B2 (en) * 2006-10-25 2012-04-18 山陽特殊製鋼株式会社 Manufacturing method of steel parts having excellent fatigue strength and steel parts
CN100584985C (en) * 2006-11-24 2010-01-27 宝山钢铁股份有限公司 Alloy steel for gear wheel and preparation method thereof
US20080156403A1 (en) * 2006-12-28 2008-07-03 Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd) Steel for high-speed cold working and method for production thereof, and part formed by high-speed cold working and method for production thereof

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11236646A (en) * 1997-12-15 1999-08-31 Sumitomo Metal Ind Ltd Grain coarsening-resistant case hardening steel, surface hardened parts excellent in strength and toughness and production thereof
JP2002069573A (en) * 2000-08-30 2002-03-08 Nippon Steel Corp Case-hardening steel excellent in torsional fatigue characteristic, and case-hardened parts
JP2005220423A (en) * 2004-02-06 2005-08-18 Kobe Steel Ltd Ti-CONTAINING CASE HARDENING STEEL
JP2007031787A (en) * 2005-07-27 2007-02-08 Kobe Steel Ltd Case-hardened steel having superior grain coarsening resistance, fatigue characteristic and machinability, and manufacturing method therefor

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2010116555A1 *

Also Published As

Publication number Publication date
EP2418296A1 (en) 2012-02-15
AU2009343864A1 (en) 2011-09-29
CN102378822B (en) 2014-05-14
BRPI0925071B1 (en) 2021-05-04
CA2757393C (en) 2015-10-06
CN102378822A (en) 2012-03-14
KR20110117261A (en) 2011-10-26
KR101367350B1 (en) 2014-02-26
BRPI0925071A2 (en) 2015-07-21
AU2009343864B2 (en) 2012-10-18
EP2418296B1 (en) 2020-02-26
CA2757393A1 (en) 2010-10-14
WO2010116555A1 (en) 2010-10-14
US20120018063A1 (en) 2012-01-26

Similar Documents

Publication Publication Date Title
EP2418296A4 (en) Steel for case hardening which has excellent cold workability and machinability and which exhibits excellent fatigue characteristics after carburizing and quenching, and process for production of same
EP2357260A4 (en) Case hardening steel, carburized component, and method for producing case hardening steel
EP2868763A4 (en) High carbon steel pipe having excellent cold workability, machinability, and quenching properties, and method for manufacturing same
EP2402470A4 (en) High-strength hot-dip galvanized steel plate of excellent workability and manufacturing method therefor
EP2447383A4 (en) Pearlite based high-carbon steel rail having excellent ductility and process for production thereof
HUE053150T2 (en) Method for producing hardened components with regions of different hardness and/or ductility
EP2557193A4 (en) High-strength steel sheet having excellent hot rolling workability, and process for production thereof
EP2397570A4 (en) Steel plate for line pipes with excellent strength and ductility and process for production of same
EP2380995A4 (en) Smelting vessel, steel making plant and steel production method
EP2500445A4 (en) High-strength steel sheet having excellent processability and paint bake hardenability, and method for producing of high-strength steel sheet
EP2799567A4 (en) High strength steel pipe having excellent ductility and low temperature toughness, high strength steel sheet, and method for producing steel sheet
EP2284287A4 (en) Process for production of carburized part and steel part
EP2392682A4 (en) Thick high-tensile-strength hot-rolled steel sheet with excellent low-temperature toughness and process for production of same
EP2444510A4 (en) High-strength hot-dip galvannealed steel shhet with excellent workability and fatigue characteristics and process for production thereof
EP2397571A4 (en) Steel for high-strength vehicle stabilizer with excellent corrosion resistance and low-temperature toughness, and process for the production of same, and stabilizer
GB0913382D0 (en) Bainite steel and methods of manufacture thereof
EP2617852A4 (en) High-strength hot-rolled steel sheet having excellent bending workability and method for producing same
EP2204463A4 (en) Martensitic non-heat-treated steel for hot forging and non-heat-treated steel hot forgings
BRPI1009035A2 (en) apparatus and method of production of iron, semi-steel and reducing gas
EP2143813A4 (en) Steel material having excellent high temperature properties and excellent toughness, and method for production thereof
PL2235230T3 (en) Method for producing corrosion-resistant surfaces of nitrated or nitrocarburated steel components
EP2460906A4 (en) Steel member having nitrogen compound layer and process for producing same
WO2010074435A3 (en) Steel sheet annealing device, device for producing plated steel sheet comprising the same, and production method for plated steel sheet using the same
EP2145970A4 (en) Precipitation-hardened martensitic cast stainless steel having excellent machinability, and method for production thereof
EP2184373A4 (en) Thick hot-rolled steel sheet having excellent processability and excellent strength/toughness after thermal treatment, and method for production of the steel sheet

Legal Events

Date Code Title Description
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

17P Request for examination filed

Effective date: 20110913

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): 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 SE SI SK SM TR

DAX Request for extension of the european patent (deleted)
RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: NIPPON STEEL & SUMITOMO METAL CORPORATION

RA4 Supplementary search report drawn up and despatched (corrected)

Effective date: 20170413

RIC1 Information provided on ipc code assigned before grant

Ipc: C22C 38/60 20060101ALI20170408BHEP

Ipc: C21D 8/06 20060101ALI20170408BHEP

Ipc: C23C 8/22 20060101ALI20170408BHEP

Ipc: C23C 8/02 20060101ALI20170408BHEP

Ipc: C21D 1/06 20060101ALI20170408BHEP

Ipc: C22C 38/00 20060101AFI20170408BHEP

Ipc: C22C 1/00 20060101ALI20170408BHEP

Ipc: C21D 8/02 20060101ALI20170408BHEP

Ipc: C23C 8/32 20060101ALI20170408BHEP

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: 20180724

REG Reference to a national code

Ref country code: DE

Ref legal event code: R079

Ref document number: 602009061307

Country of ref document: DE

Free format text: PREVIOUS MAIN CLASS: C22C0038000000

Ipc: C22C0038020000

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

RIC1 Information provided on ipc code assigned before grant

Ipc: C22C 38/22 20060101ALI20190208BHEP

Ipc: C22C 1/00 20060101ALI20190208BHEP

Ipc: C21D 1/06 20060101ALI20190208BHEP

Ipc: C21D 8/02 20060101ALI20190208BHEP

Ipc: C22C 1/02 20060101ALI20190208BHEP

Ipc: C22C 38/24 20060101ALI20190208BHEP

Ipc: C22C 38/38 20060101ALI20190208BHEP

Ipc: C23C 8/80 20060101ALI20190208BHEP

Ipc: C22C 38/26 20060101ALI20190208BHEP

Ipc: C22C 38/32 20060101ALI20190208BHEP

Ipc: C22C 38/48 20060101ALI20190208BHEP

Ipc: C22C 38/04 20060101ALI20190208BHEP

Ipc: C22C 38/02 20060101AFI20190208BHEP

Ipc: C22C 38/06 20060101ALI20190208BHEP

Ipc: C23C 8/32 20060101ALI20190208BHEP

Ipc: C22C 38/46 20060101ALI20190208BHEP

Ipc: C22C 38/28 20060101ALI20190208BHEP

INTG Intention to grant announced

Effective date: 20190320

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: NIPPON STEEL CORPORATION

GRAJ Information related to disapproval of communication of intention to grant by the applicant or resumption of examination proceedings by the epo deleted

Free format text: ORIGINAL CODE: EPIDOSDIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: EXAMINATION IS IN PROGRESS

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

INTC Intention to grant announced (deleted)
INTG Intention to grant announced

Effective date: 20190820

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): 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 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: AT

Ref legal event code: REF

Ref document number: 1237693

Country of ref document: AT

Kind code of ref document: T

Effective date: 20200315

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 602009061307

Country of ref document: DE

REG Reference to a national code

Ref country code: SE

Ref legal event code: TRGR

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200226

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200526

REG Reference to a national code

Ref country code: NL

Ref legal event code: MP

Effective date: 20200226

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG4D

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200527

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200526

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200226

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200226

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200626

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200226

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200226

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200226

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200226

Ref country code: SM

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200226

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200226

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200226

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200719

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200226

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200226

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20200827

Year of fee payment: 12

REG Reference to a national code

Ref country code: AT

Ref legal event code: MK05

Ref document number: 1237693

Country of ref document: AT

Kind code of ref document: T

Effective date: 20200226

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 602009061307

Country of ref document: DE

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200226

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 20201016

Year of fee payment: 12

Ref country code: IT

Payment date: 20201009

Year of fee payment: 12

26N No opposition filed

Effective date: 20201127

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200226

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200226

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20201014

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20201014

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200226

REG Reference to a national code

Ref country code: BE

Ref legal event code: MM

Effective date: 20201031

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20201014

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20201031

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20201031

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20201031

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20201014

REG Reference to a national code

Ref country code: SE

Ref legal event code: EUG

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200226

Ref country code: MT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200226

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200226

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200226

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20211015

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20211031

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20211014

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20230830

Year of fee payment: 15