EP3505652A4 - High hardenability, medium carbon, low alloy round steel for fasteners and manufacturing method therefor - Google Patents

High hardenability, medium carbon, low alloy round steel for fasteners and manufacturing method therefor Download PDF

Info

Publication number
EP3505652A4
EP3505652A4 EP17871507.4A EP17871507A EP3505652A4 EP 3505652 A4 EP3505652 A4 EP 3505652A4 EP 17871507 A EP17871507 A EP 17871507A EP 3505652 A4 EP3505652 A4 EP 3505652A4
Authority
EP
European Patent Office
Prior art keywords
fasteners
manufacturing
round steel
method therefor
low alloy
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
Application number
EP17871507.4A
Other languages
German (de)
French (fr)
Other versions
EP3505652A1 (en
Inventor
Ling Ji
Xiaohong Xu
Zhen Huang
Shuyan SHAO
Xuewen Liu
Xiangwei KONG
Shaoxin Hu
Xudong Zhang
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.)
Jiangyin Xing Cheng Special Steel Works Co Ltd
Original Assignee
Jiangyin Xing Cheng Special Steel Works Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Jiangyin Xing Cheng Special Steel Works Co Ltd filed Critical Jiangyin Xing Cheng Special Steel Works Co Ltd
Publication of EP3505652A1 publication Critical patent/EP3505652A1/en
Publication of EP3505652A4 publication Critical patent/EP3505652A4/en
Pending legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D6/00Heat treatment of ferrous alloys
    • C21D6/008Heat treatment of ferrous alloys containing Si
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/18Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/42Ferrous alloys, e.g. steel alloys containing chromium with nickel with copper
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D1/00General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/18Hardening; Quenching with or without subsequent tempering
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D6/00Heat treatment of ferrous alloys
    • C21D6/004Heat treatment of ferrous alloys containing Cr and Ni
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D6/00Heat treatment of ferrous alloys
    • C21D6/005Heat treatment of ferrous alloys containing Mn
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D8/00Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/06Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of rods or wires
    • C21D8/065Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of rods or wires of ferrous alloys
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D9/00Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/0093Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for screws; for bolts
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D9/00Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/52Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
    • C21D9/525Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length for wire, for rods
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/02Ferrous alloys, e.g. steel alloys containing silicon
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/04Ferrous alloys, e.g. steel alloys containing manganese
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/06Ferrous alloys, e.g. steel alloys containing aluminium
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/18Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/44Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/18Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/50Ferrous alloys, e.g. steel alloys containing chromium with nickel with titanium or zirconium
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/18Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/54Ferrous alloys, e.g. steel alloys containing chromium with nickel with boron
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D2211/00Microstructure comprising significant phases
    • C21D2211/008Martensite

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Heat Treatment Of Articles (AREA)
  • Heat Treatment Of Steel (AREA)
EP17871507.4A 2016-11-15 2017-08-10 High hardenability, medium carbon, low alloy round steel for fasteners and manufacturing method therefor Pending EP3505652A4 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201611003436.1A CN106521316B (en) 2016-11-15 2016-11-15 Carbon and low-alloy round steel and its manufacturing method in a kind of fastener high-hardenability
PCT/CN2017/096705 WO2018090682A1 (en) 2016-11-15 2017-08-10 High hardenability, medium carbon, low alloy round steel for fasteners and manufacturing method therefor

Publications (2)

Publication Number Publication Date
EP3505652A1 EP3505652A1 (en) 2019-07-03
EP3505652A4 true EP3505652A4 (en) 2019-07-31

Family

ID=58351696

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17871507.4A Pending EP3505652A4 (en) 2016-11-15 2017-08-10 High hardenability, medium carbon, low alloy round steel for fasteners and manufacturing method therefor

Country Status (4)

Country Link
US (1) US20190284654A1 (en)
EP (1) EP3505652A4 (en)
CN (1) CN106521316B (en)
WO (1) WO2018090682A1 (en)

Families Citing this family (35)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106521316B (en) * 2016-11-15 2018-08-07 江阴兴澄特种钢铁有限公司 Carbon and low-alloy round steel and its manufacturing method in a kind of fastener high-hardenability
CN107299282A (en) * 2017-05-27 2017-10-27 内蒙古包钢钢联股份有限公司 Car crankshaft and its production method
CN107012393B (en) * 2017-06-01 2018-05-15 山东寿光巨能特钢有限公司 The production method of carbon chromium steel in a kind of low cost high-hardenability
CN109487643A (en) * 2018-09-14 2019-03-19 宁波博睿思特种材料科技有限公司 Railway low-cost corrosion-resistant screw spike and its preparation process
CN109609856A (en) * 2019-02-22 2019-04-12 无锡宏达重工股份有限公司 Optimize the heat treatment process that 42CrMo low-temperature impact absorbs function
CN110983178B (en) * 2019-12-09 2021-09-07 江阴兴澄特种钢铁有限公司 Steel for ball screw bearing and manufacturing method thereof
CN110983001A (en) * 2019-12-27 2020-04-10 江苏南钢通恒特材科技有限公司 32CrB4 induction hardening and tempering process
CN113322409B (en) * 2020-02-28 2022-06-28 宝山钢铁股份有限公司 High-strength and high-toughness mining chain steel and manufacturing method thereof
CN111961792A (en) * 2020-08-04 2020-11-20 南京钢铁股份有限公司 Control method for efficiently producing steel for wind power fasteners
CN111876686A (en) * 2020-08-12 2020-11-03 宝武集团鄂城钢铁有限公司 Method for producing B-containing alloy steel by low-cost double refining method
CN112126743B (en) * 2020-08-19 2021-12-14 石钢京诚装备技术有限公司 Production method of low-aluminum-content Cr5 steel ingot for supporting roll
CN111958188A (en) * 2020-08-20 2020-11-20 本钢板材股份有限公司 Preparation method of spline sleeve of tapping machine
CN114086054A (en) * 2020-08-24 2022-02-25 宝山钢铁股份有限公司 High-hardenability quenched and tempered steel, round steel and manufacturing method thereof
CN112226684A (en) * 2020-09-24 2021-01-15 南京钢铁股份有限公司 Drill collar steel
CN112359264B (en) * 2020-10-15 2021-11-02 中天钢铁集团有限公司 Production method of high-strength and high-toughness steel for wind power bolts
CN112359278B (en) * 2020-10-19 2021-08-24 中天钢铁集团有限公司 Preparation method of steel for engineering machinery gear and preparation method of forge piece of steel
CN112522492B (en) * 2020-10-28 2022-11-01 浙江自紧王机械有限公司 Heat treatment process for self-tightening nut and self-tightening gasket
CN113025878B (en) * 2021-01-29 2022-07-29 江阴兴澄特种钢铁有限公司 Quenching and tempering round steel for oil-well low-alloy well completion tool and manufacturing method thereof
CN113025873A (en) * 2021-03-02 2021-06-25 青岛特殊钢铁有限公司 Method for improving hardenability and tempering stability of 35MnBH round steel
CN113234991B (en) * 2021-03-23 2023-01-06 江阴兴澄特种钢铁有限公司 Steel for screw rod of recirculating ball type steering gear and manufacturing method thereof
CN113265578B (en) * 2021-04-29 2022-05-10 武钢集团昆明钢铁股份有限公司 Integrated control method for reducing delayed fracture of steel for prestressed reinforced concrete and application thereof
CN114134402A (en) * 2021-05-18 2022-03-04 江阴兴澄特种钢铁有限公司 Large-specification high-strength wind power fastener steel for offshore and rock and manufacturing method thereof
CN113528961B (en) * 2021-07-15 2022-06-17 承德建龙特殊钢有限公司 Continuous casting round billet for wind power yaw bearing and preparation method thereof
CN113737094A (en) * 2021-08-30 2021-12-03 山西风雷钻具有限公司 Machining process of high-performance adapter for drill string
CN115896607A (en) * 2021-09-24 2023-04-04 宝山钢铁股份有限公司 High-hardenability wind power bolt steel, bar and manufacturing method thereof
CN113798351B (en) * 2021-10-08 2024-06-14 内蒙古北方重工业集团有限公司 Thermal correction method for large-scale frame thin-wall parts
CN114058947B (en) * 2021-10-15 2022-10-21 首钢集团有限公司 Multi-element composite high-carbon low-alloy tool steel and preparation method and application thereof
CN114182181A (en) * 2021-11-22 2022-03-15 伊莱特能源装备股份有限公司 Steel ball rolled by using high-carbon steel as raw material and rolling process
CN116179936A (en) * 2021-11-26 2023-05-30 江苏新华合金有限公司 Novel plate and production process thereof
CN114411047B (en) * 2022-01-25 2022-11-15 中天钢铁集团有限公司 Production process of alloy structural steel for automobile steering system
CN114774774A (en) * 2022-03-15 2022-07-22 江阴兴澄特种钢铁有限公司 Round steel for large-diameter low-segregation oil cylinder piston rod and manufacturing method thereof
CN114657468B (en) * 2022-03-23 2022-11-11 承德建龙特殊钢有限公司 Steel for wind power fastener and preparation method thereof
CN115044823B (en) * 2022-06-28 2023-05-30 江苏永钢集团有限公司 Production process of ultra-supercritical high-pressure boiler steel P92 continuous casting large round billet
CN115216695B (en) * 2022-07-22 2023-08-08 上海大学 Ultra-high strength alloy steel, 16.8-grade threaded fastener and preparation method thereof
CN115354138B (en) * 2022-08-19 2023-11-21 河南中原特钢装备制造有限公司 Heat treatment process for improving hardness uniformity of whole cross section of 20CrNiMo calender roll

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2546380A1 (en) * 2010-03-11 2013-01-16 Nippon Steel Corporation High-strength steel and high-strength bolt with excellent resistance to delayed fracture, and manufacturing method therefor
EP2546379A1 (en) * 2010-03-11 2013-01-16 Nippon Steel Corporation High-strength steel and high-strength bolt with excellent resistance to delayed fracture, and manufacturing method therefor
CN104975235A (en) * 2015-07-20 2015-10-14 江阴兴澄特种钢铁有限公司 High-toughness medium-carbon quenched and tempered round steel of grade 120 KSI and manufacturing method thereof

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH064889B2 (en) * 1983-01-14 1994-01-19 新日本製鐵株式会社 Method for manufacturing thick ultra high strength steel
JP3763573B2 (en) * 2002-11-21 2006-04-05 三菱製鋼株式会社 Spring steel with improved hardenability and pitting corrosion resistance
CN100540706C (en) * 2005-07-05 2009-09-16 杰富意钢铁株式会社 The steel for mechanical structure of intensity, ductility and good-toughness and manufacture method thereof
CN101717890B (en) * 2009-11-26 2012-09-05 三一重工股份有限公司 Cast low alloy steel for grader blade and preparation method
CN101792889B (en) * 2010-03-30 2011-07-20 莱芜钢铁集团有限公司 Medium-carbon multi-alloying wear-resistant hot rolling round steel and production method thereof
JP5777090B2 (en) * 2011-04-21 2015-09-09 山陽特殊製鋼株式会社 Steel for machine structural use with excellent surface fatigue strength
JP5811282B2 (en) * 2012-08-20 2015-11-11 新日鐵住金株式会社 Round steel for cold forging
CN103160729B (en) * 2013-04-08 2015-06-03 内蒙古包钢钢联股份有限公司 Medium-carbon microalloyed steel for engineering machinery caterpillar chain piece and production process thereof
JP6267618B2 (en) * 2014-09-30 2018-01-24 株式会社神戸製鋼所 Bolt steel and bolts
CA2967283C (en) * 2014-11-18 2019-08-20 Nippon Steel & Sumitomo Metal Corporation Rolled steel bar or rolled wire rod for cold-forged component
CN104911486A (en) * 2015-06-16 2015-09-16 武汉钢铁(集团)公司 Non-quenched and tempered steel for automobile fastener screws and production method thereof
CN106521316B (en) * 2016-11-15 2018-08-07 江阴兴澄特种钢铁有限公司 Carbon and low-alloy round steel and its manufacturing method in a kind of fastener high-hardenability

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2546380A1 (en) * 2010-03-11 2013-01-16 Nippon Steel Corporation High-strength steel and high-strength bolt with excellent resistance to delayed fracture, and manufacturing method therefor
EP2546379A1 (en) * 2010-03-11 2013-01-16 Nippon Steel Corporation High-strength steel and high-strength bolt with excellent resistance to delayed fracture, and manufacturing method therefor
CN104975235A (en) * 2015-07-20 2015-10-14 江阴兴澄特种钢铁有限公司 High-toughness medium-carbon quenched and tempered round steel of grade 120 KSI and manufacturing method thereof

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2018090682A1 *

Also Published As

Publication number Publication date
CN106521316A (en) 2017-03-22
WO2018090682A1 (en) 2018-05-24
US20190284654A1 (en) 2019-09-19
EP3505652A1 (en) 2019-07-03
CN106521316B (en) 2018-08-07

Similar Documents

Publication Publication Date Title
EP3505652A4 (en) High hardenability, medium carbon, low alloy round steel for fasteners and manufacturing method therefor
EP3228722A4 (en) High-strength, cold-rolled, thin steel sheet and method for manufacturing same
EP3427852A4 (en) Method for manufacturing different-thickness steel pipe, and different-thickness steel pipe
EP3561119A4 (en) Tempered martensitic steel having low yield ratio and excellent uniform elongation, and manufacturing method therefor
EP3093361A4 (en) Bearing component, steel for bearing component, and production method for same
EP3447160A4 (en) Steel plate, plated steel plate, and production method therefor
EP3553195A4 (en) High mn steel sheet and method for producing same
EP3278890A4 (en) Apparatus for manufacturing welded section steel, and method for manufacturing welded section steel
EP3521477A4 (en) Steel sheet for carburization, and production method for steel sheet for carburization
EP3521458A4 (en) Steel parts, production method therefor, and steel sheet for steel parts
EP3483298A4 (en) High toughness bainitic steel wheel for rail transit, and manufacturing method therefor
EP3712291A4 (en) Low-temperature steel plate having excellent impact toughness, and method for manufacturing same
EP3647453A4 (en) Free machining and non-quenched and tempered steel and manufacturing method thereof
EP3358035A4 (en) Manufacturing method for multi-element alloyed, high-strength, high-wear-resistant steel and hot-rolled plate
EP3517648A4 (en) Steel sheet for carburizing, and production method for steel sheet for carburizing
EP3604583A4 (en) Hot-rolled steel sheet, forged steel part and production methods therefor
EP3034642A4 (en) Martensitic stainless steel having excellent wear resistance and corrosion resistance, and method for producing same
EP3418419A4 (en) Thin steel sheet, plated steel sheet, method for producing hot-rolled steel sheet, method for producing cold-rolled full hard steel sheet, method for producing thin steel sheet, and method for producing plated steel sheet
EP3418418A4 (en) Thin steel sheet, plated steel sheet, method for producing hot-rolled steel sheet, method for producing cold-rolled full hard steel sheet, method for producing thin steel sheet, and method for producing plated steel sheet
EP3447159A4 (en) Steel plate, plated steel plate, and production method therefor
EP3382051A4 (en) Steel, carburized steel component, and carburized steel component production method
EP3382050A4 (en) Steel, carburized steel component, and carburized steel component production method
EP3399063A4 (en) Case-hardened steel, carburized component, and process for producing case-hardened steel
ZA201805804B (en) Method for manufacturing cold-rolled, welded steel sheets, and sheets thus produced
EP3260570A4 (en) Hot-rolled steel sheet, steel member, and method for manufacturing hot-rolled steel sheet

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: 20190327

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: 20190701

RIC1 Information provided on ipc code assigned before grant

Ipc: C22C 38/44 20060101ALI20190625BHEP

Ipc: C22C 38/06 20060101ALI20190625BHEP

Ipc: C22C 38/02 20060101ALI20190625BHEP

Ipc: C22C 38/50 20060101ALI20190625BHEP

Ipc: C22C 38/54 20060101AFI20190625BHEP

Ipc: C22C 38/04 20060101ALI20190625BHEP

Ipc: C21D 1/18 20060101ALI20190625BHEP

Ipc: C21D 6/00 20060101ALI20190625BHEP

Ipc: C21D 9/52 20060101ALI20190625BHEP

Ipc: C21D 9/00 20060101ALI20190625BHEP

Ipc: C22C 38/42 20060101ALI20190625BHEP

Ipc: C21D 8/06 20060101ALI20190625BHEP

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

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: 20210823