EP3480331A4 - FERRITIC HEAT-RESISTANT STEEL AND FERRITIC HEAT TRANSFER PART - Google Patents

FERRITIC HEAT-RESISTANT STEEL AND FERRITIC HEAT TRANSFER PART Download PDF

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Publication number
EP3480331A4
EP3480331A4 EP17820295.8A EP17820295A EP3480331A4 EP 3480331 A4 EP3480331 A4 EP 3480331A4 EP 17820295 A EP17820295 A EP 17820295A EP 3480331 A4 EP3480331 A4 EP 3480331A4
Authority
EP
European Patent Office
Prior art keywords
ferritic heat
transfer member
resistant steel
heat transfer
ferritic
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
EP17820295.8A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3480331A1 (en
Inventor
Yoshitaka Nishiyama
Hiroshi Nogami
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 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 Corp filed Critical Nippon Steel Corp
Publication of EP3480331A1 publication Critical patent/EP3480331A1/en
Publication of EP3480331A4 publication Critical patent/EP3480331A4/en
Pending legal-status Critical Current

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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
    • C22C38/44—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
    • C22C38/58—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
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/74—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material
    • C21D1/76—Adjusting the composition of the atmosphere
    • 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
    • C22C38/005—Ferrous alloys, e.g. steel alloys containing rare earths, i.e. Sc, Y, Lanthanides
    • 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
    • C22C38/20—Ferrous alloys, e.g. steel alloys containing chromium 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
    • C22C38/22—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
    • C22C38/30—Ferrous alloys, e.g. steel alloys containing chromium with cobalt
    • 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
    • C22C38/40—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
    • 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
    • C23C8/08—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 only one element being applied
    • C23C8/10—Oxidising
    • 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
    • C23C8/08—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 only one element being applied
    • C23C8/10—Oxidising
    • C23C8/16—Oxidising using oxygen-containing compounds, e.g. water, carbon dioxide
    • C23C8/18—Oxidising of ferrous surfaces
    • 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
    • C21D6/00—Heat treatment of ferrous alloys
    • C21D6/002—Heat treatment of ferrous alloys containing Cr
    • 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
    • C21D8/0278—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips involving a particular surface treatment
    • 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
    • C21D8/10—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of tubular bodies
    • C21D8/105—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of tubular bodies of ferrous alloys

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Heat Treatment Of Sheet Steel (AREA)
  • Other Surface Treatments For Metallic Materials (AREA)
EP17820295.8A 2016-06-29 2017-06-29 FERRITIC HEAT-RESISTANT STEEL AND FERRITIC HEAT TRANSFER PART Pending EP3480331A4 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2016128431 2016-06-29
PCT/JP2017/024012 WO2018003941A1 (ja) 2016-06-29 2017-06-29 フェライト系耐熱鋼及びフェライト系伝熱部材

Publications (2)

Publication Number Publication Date
EP3480331A1 EP3480331A1 (en) 2019-05-08
EP3480331A4 true EP3480331A4 (en) 2020-01-01

Family

ID=60787083

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17820295.8A Pending EP3480331A4 (en) 2016-06-29 2017-06-29 FERRITIC HEAT-RESISTANT STEEL AND FERRITIC HEAT TRANSFER PART

Country Status (7)

Country Link
US (1) US20190330724A1 (zh)
EP (1) EP3480331A4 (zh)
JP (1) JP6801712B2 (zh)
KR (1) KR102165758B1 (zh)
CN (1) CN109415787A (zh)
CA (1) CA3028947A1 (zh)
WO (1) WO2018003941A1 (zh)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6805574B2 (ja) * 2015-07-10 2020-12-23 日本製鉄株式会社 オーステナイト系耐熱鋼及びオーステナイト系伝熱部材
US20220033942A1 (en) * 2018-09-28 2022-02-03 Corning Incorporated Alloyed metals with an increased austenite transformation temperature and articles including the same
WO2021153657A1 (ja) * 2020-01-31 2021-08-05 日本製鉄株式会社 合金材加熱用酸化防止剤、及び、それを用いた合金材の加熱方法
CN112501510A (zh) * 2020-11-27 2021-03-16 天津职业技术师范大学(中国职业培训指导教师进修中心) 一种高铝铁素体耐热钢及其制备方法
JP7173411B1 (ja) * 2021-03-17 2022-11-16 Ｊｆｅスチール株式会社 二相ステンレス鋼管およびその製造方法
CN116970875B (zh) * 2023-09-25 2023-12-15 上海核工程研究设计院股份有限公司 一种含钽铁素体耐热钢及其制造方法

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5520751A (en) * 1993-09-24 1996-05-28 Exxon Research And Engineering Company Oxidation of low chromium steels
JPH1192880A (ja) * 1997-09-22 1999-04-06 Natl Res Inst For Metals 耐酸化性・耐水蒸気酸化特性に優れた 高Ｃｒフェライト系耐熱鋼とその製造方法
JP2009007601A (ja) * 2007-06-26 2009-01-15 Nisshin Steel Co Ltd 集熱機器用フェライト系ステンレス鋼材
JP2013127103A (ja) * 2011-12-19 2013-06-27 Babcock Hitachi Kk フェライト系耐熱鋼の耐酸化処理方法、フェライト系耐熱鋼ならびにボイラ装置
CN103334056A (zh) * 2013-03-25 2013-10-02 天津理工大学 一种用于火力发电锅炉管的高Cr铁素体耐热钢及应用
US20140295194A1 (en) * 2011-11-22 2014-10-02 Nippon Steel & Sumitomo Metal Corporation Heat resistant ferritic steel and method for producing the same

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Publication number Priority date Publication date Assignee Title
JP3367216B2 (ja) * 1994-09-20 2003-01-14 住友金属工業株式会社 高Ｃｒフェライト系耐熱鋼
EP1867745B1 (en) * 2005-04-07 2014-08-06 Nippon Steel & Sumitomo Metal Corporation Ferritic heat-resistant steel
JP2007039745A (ja) 2005-08-03 2007-02-15 Babcock Hitachi Kk フェライト系耐熱鋼の耐水蒸気酸化性改善方法及び耐水蒸気酸化性に優れたフェライト系耐熱鋼並びにボイラ用耐熱鋼
EP1988182A4 (en) * 2006-02-06 2013-10-16 Babcock Hitachi Kk FERRITIC HEAT-RESISTANT STEEL
EP2157202B1 (en) * 2007-06-04 2017-07-12 Nippon Steel & Sumitomo Metal Corporation Ferrite heat resistant steel
JP4990323B2 (ja) 2009-05-18 2012-08-01 独立行政法人物質・材料研究機構 フェライト系耐熱鋼
CN103336102B (zh) * 2012-06-12 2015-01-14 武汉大学 9-12%Cr马氏体耐热钢焊缝中δ-铁素体含量的测定方法

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5520751A (en) * 1993-09-24 1996-05-28 Exxon Research And Engineering Company Oxidation of low chromium steels
JPH1192880A (ja) * 1997-09-22 1999-04-06 Natl Res Inst For Metals 耐酸化性・耐水蒸気酸化特性に優れた 高Ｃｒフェライト系耐熱鋼とその製造方法
JP2009007601A (ja) * 2007-06-26 2009-01-15 Nisshin Steel Co Ltd 集熱機器用フェライト系ステンレス鋼材
US20140295194A1 (en) * 2011-11-22 2014-10-02 Nippon Steel & Sumitomo Metal Corporation Heat resistant ferritic steel and method for producing the same
JP2013127103A (ja) * 2011-12-19 2013-06-27 Babcock Hitachi Kk フェライト系耐熱鋼の耐酸化処理方法、フェライト系耐熱鋼ならびにボイラ装置
CN103334056A (zh) * 2013-03-25 2013-10-02 天津理工大学 一种用于火力发电锅炉管的高Cr铁素体耐热钢及应用

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
NIU KUN ET AL: "Corrosion performance of 13Cr stainless steel in high temperature and high pressure environments", FUSHI-YU-FANGHU ? = CORROSION AND PROTECTION, XX, CN, vol. 33, no. 5, 1 January 2012 (2012-01-01), pages 407 - 410, XP009517346, ISSN: 1005-748X *
See also references of WO2018003941A1 *
SHUKLA AMARISH K ET AL: "Effect of Cold Working on Hot Corrosion Behavior of 9 Cr-1 Mo Ferritic Steel in 75 wt% Na2SO4 + 25 wt% K2SO4Molten Salt Environment at 900 °C", TRANSACTIONS OF THE INDIAN INSTITUTE OF METALS, SPRINGER INDIA, IN, vol. 69, no. 5, 2 February 2016 (2016-02-02), pages 1049 - 1057, XP035964217, ISSN: 0972-2815, [retrieved on 20160202], DOI: 10.1007/S12666-015-0619-4 *

Also Published As

Publication number Publication date
CN109415787A (zh) 2019-03-01
US20190330724A1 (en) 2019-10-31
KR102165758B1 (ko) 2020-10-14
CA3028947A1 (en) 2018-01-04
JP6801712B2 (ja) 2020-12-16
EP3480331A1 (en) 2019-05-08
WO2018003941A1 (ja) 2018-01-04
JPWO2018003941A1 (ja) 2019-04-25
KR20190022779A (ko) 2019-03-06

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Ipc: C22C 38/26 20060101ALI20191125BHEP

Ipc: C21D 8/02 20060101ALN20191125BHEP

Ipc: C22C 38/22 20060101ALI20191125BHEP

Ipc: C21D 6/00 20060101ALN20191125BHEP

Ipc: C22C 38/28 20060101ALI20191125BHEP

Ipc: C22C 38/58 20060101ALI20191125BHEP

Ipc: C22C 38/20 20060101ALI20191125BHEP

Ipc: C22C 38/06 20060101ALI20191125BHEP

Ipc: C22C 38/04 20060101ALI20191125BHEP

Ipc: C21D 1/76 20060101ALI20191125BHEP

Ipc: C22C 38/32 20060101ALI20191125BHEP

Ipc: C23C 8/10 20060101ALI20191125BHEP

Ipc: C22C 38/30 20060101ALI20191125BHEP

Ipc: C22C 38/02 20060101ALI20191125BHEP

Ipc: C21D 8/10 20060101ALN20191125BHEP

Ipc: C23C 8/18 20060101ALI20191125BHEP

Ipc: C22C 38/24 20060101ALI20191125BHEP

Ipc: C22C 38/00 20060101AFI20191125BHEP

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