BR112013017647A2 - duplex stainless steel - Google Patents

duplex stainless steel

Info

Publication number
BR112013017647A2
BR112013017647A2 BR112013017647A BR112013017647A BR112013017647A2 BR 112013017647 A2 BR112013017647 A2 BR 112013017647A2 BR 112013017647 A BR112013017647 A BR 112013017647A BR 112013017647 A BR112013017647 A BR 112013017647A BR 112013017647 A2 BR112013017647 A2 BR 112013017647A2
Authority
BR
Brazil
Prior art keywords
maximum
stainless steel
duplex stainless
expression
resistance
Prior art date
Application number
BR112013017647A
Other languages
Portuguese (pt)
Other versions
BR112013017647B1 (en
Inventor
Daisuke Motoya
Hiroyuki Nagayama
Hisashi Amaya
Kenta Yamada
Masahiko Hamada
Original Assignee
Nippon Steel & Sumito 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 & Sumito Metal Corp filed Critical Nippon Steel & Sumito Metal Corp
Publication of BR112013017647A2 publication Critical patent/BR112013017647A2/en
Publication of BR112013017647B1 publication Critical patent/BR112013017647B1/en

Links

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
    • C22C38/005—Ferrous alloys, e.g. steel alloys containing rare earths, i.e. Sc, Y, Lanthanides
    • 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
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0221—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
    • C21D8/0226—Hot rolling
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • 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
    • C22C38/40—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
    • C22C38/54—Ferrous alloys, e.g. steel alloys containing chromium with nickel 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
    • C22C38/58—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
    • 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
    • C21D2211/004—Dispersions; Precipitations
    • 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
    • C21D7/00—Modifying the physical properties of iron or steel by deformation
    • C21D7/13—Modifying the physical properties of iron or steel by deformation by hot working

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Heat Treatment Of Steel (AREA)
  • Heat Treatment Of Sheet Steel (AREA)

Abstract

aço inoxidável duplex trata-se de um aço inoxidável duplex que pode suprimir a precipitação de uma fase <sym> no momento de soldagem de entrada de calor elevado, é excelente em resistência à scc em ambientes de cloreto de alta temperatura, e tem uma resistência alta. o aço inoxidável duplex, de acordo com a presente invenção, inclui uma composição química que contém, em porcentagem em massa, c: no máximo 0,030%, si: 0,20 a 1,00%, mn: no máximo 8,00%, p: no máximo 0,4%, s: no máximo 0,0100%, cu: mais que 2,00% e no máximo 4,00%, ni: 4,00 a 8,00%, cr: 20,0 a 28,0%, mo: 0,50 a 2,00%, n: 0,100 a 0,350%, e sol. al: no máximo 0,040%, sendo que o equilíbrio é de fe e impurezas e satisfaz a expressão (1) e a expressão (2); uma estrutura que tem uma taxa de ferrita de pelo menos 50%, e um limite elástico de pelo menos 550 mpa ou mais:duplex stainless steel is a duplex stainless steel that can suppress precipitation of a <sym> phase at high heat inlet welding, excels in scc resistance in high temperature chloride environments, and has a high resistance high. Duplex stainless steel according to the present invention includes a chemical composition containing by weight c: maximum 0.030%, si: 0.20 to 1.00%, mn maximum 8.00% , p: maximum 0.4%, s: maximum 0.0100%, cu: more than 2.00% and maximum 4.00%, ni: 4.00 to 8.00%, cr: 20, 0 to 28.0%, m: 0.50 to 2.00%, n: 0.100 to 0.350%, and sol. al: maximum 0.040%, where the equilibrium is f and impurities and satisfies expression (1) and expression (2); a structure that has a ferrite rate of at least 50%, and an elastic limit of at least 550 mpa or more:

BR112013017647-4A 2011-02-14 2012-02-10 DUPLEX STAINLESS STEEL FOR USE IN PIPE LINES BR112013017647B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2011-028334 2011-02-14
JP2011028334 2011-02-14
PCT/JP2012/053037 WO2012111537A1 (en) 2011-02-14 2012-02-10 Duplex stainless steel

Publications (2)

Publication Number Publication Date
BR112013017647A2 true BR112013017647A2 (en) 2016-12-20
BR112013017647B1 BR112013017647B1 (en) 2019-03-26

Family

ID=46672462

Family Applications (1)

Application Number Title Priority Date Filing Date
BR112013017647-4A BR112013017647B1 (en) 2011-02-14 2012-02-10 DUPLEX STAINLESS STEEL FOR USE IN PIPE LINES

Country Status (9)

Country Link
US (1) US20130315776A1 (en)
EP (1) EP2677056B1 (en)
JP (1) JP5206904B2 (en)
CN (1) CN103370435B (en)
AU (1) AU2012218661B2 (en)
BR (1) BR112013017647B1 (en)
CA (1) CA2826893C (en)
MX (1) MX351782B (en)
WO (1) WO2012111537A1 (en)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2476771B1 (en) * 2009-09-10 2015-03-04 Nippon Steel & Sumitomo Metal Corporation Two-phase stainless steel
CA2826880C (en) * 2011-02-14 2017-07-25 Nippon Steel & Sumitomo Metal Corporation Duplex stainless steel and production method therefor
EP2754726B1 (en) * 2011-09-06 2019-02-27 Nippon Steel & Sumitomo Metal Corporation Two-phase stainless steel
CN103938115A (en) * 2014-03-03 2014-07-23 黄忠波 Double phase stainless steel alloy material
CN105986196A (en) * 2015-03-05 2016-10-05 中国科学院金属研究所 Microbiological corrosion resisting duplex stainless steel
US10793930B2 (en) 2016-02-17 2020-10-06 Nippon Steel & Sumikin Stainless Steel Corporation Ferritic-austenitic two-phase stainless steel material and method for manufacturing same
AU2017274993B2 (en) * 2016-06-01 2019-09-12 Nippon Steel Corporation Duplex stainless steel and duplex stainless steel manufacturing method
WO2018043214A1 (en) * 2016-09-02 2018-03-08 Ｊｆｅスチール株式会社 Duplex stainless steel and method for manufacturing same
JP6780426B2 (en) * 2016-10-06 2020-11-04 日本製鉄株式会社 Duplex stainless steel
JP6946737B2 (en) * 2017-05-18 2021-10-06 日本製鉄株式会社 Duplex stainless steel and its manufacturing method
CN109648064B (en) * 2019-01-25 2021-04-20 北京科技大学 Method for realizing sigma phase transformation of super austenitic stainless steel solidification structure
BR112021012900B1 (en) * 2019-01-30 2024-01-23 Jfe Steel Corporation DUPLEX STAINLESS STEEL, SEAMLESS STEEL PIPE OR TUBE AND A METHOD OF MANUFACTURING DUPLEX STAINLESS STEEL
EP3960885B1 (en) * 2019-04-24 2024-04-10 Nippon Steel Corporation Duplex stainless seamless steel pipe and method for producing duplex stainless seamless steel pipe
BR112021022956A2 (en) * 2019-05-29 2022-01-18 Jfe Steel Corp Duplex stainless steel and method of making the same, and duplex stainless steel tube
US20220145438A1 (en) * 2019-08-19 2022-05-12 Nippon Steel Corporation Duplex stainless steel material
WO2022004526A1 (en) * 2020-06-30 2022-01-06 日本製鉄株式会社 Two-phase stainless steel pipe and welded fitting
CN113210420B (en) * 2021-04-21 2022-12-06 鞍钢联众(广州)不锈钢有限公司 Double-phase stainless steel coil and manufacturing method thereof

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JPS505972B1 (en) * 1970-05-11 1975-03-10
JPS5340656A (en) * 1973-02-07 1978-04-13 Nippon Yakin Kogyo Co Ltd Electrode core wire provided for stainless steel welding
JPS5424364B2 (en) * 1973-05-04 1979-08-21
JPS51117916A (en) * 1975-04-10 1976-10-16 Daido Steel Co Ltd Ferrite-austenite type two phase stainless steel
JPS55158256A (en) * 1979-05-29 1980-12-09 Daido Steel Co Ltd Ferritic-austenitic two-phase stainless steel
JP2790749B2 (en) * 1992-03-27 1998-08-27 株式会社クボタ Duplex stainless steel with excellent drill and bite workability
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JP3155431B2 (en) * 1994-10-26 2001-04-09 株式会社安来製作所 Duplex stainless cast member and method of manufacturing the same
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JP4502131B2 (en) * 2005-09-20 2010-07-14 住友金属工業株式会社 Duplex stainless steel with excellent hot workability
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EP2476771B1 (en) * 2009-09-10 2015-03-04 Nippon Steel & Sumitomo Metal Corporation Two-phase stainless steel

Also Published As

Publication number Publication date
MX2013008518A (en) 2013-08-12
WO2012111537A1 (en) 2012-08-23
CN103370435B (en) 2016-04-20
EP2677056B1 (en) 2016-05-18
EP2677056A1 (en) 2013-12-25
EP2677056A4 (en) 2015-03-25
BR112013017647B1 (en) 2019-03-26
US20130315776A1 (en) 2013-11-28
AU2012218661B2 (en) 2015-04-30
CA2826893A1 (en) 2012-08-23
JPWO2012111537A1 (en) 2014-07-07
CN103370435A (en) 2013-10-23
MX351782B (en) 2017-10-30
JP5206904B2 (en) 2013-06-12
CA2826893C (en) 2016-06-07
AU2012218661A1 (en) 2013-09-05

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Legal Events

Date Code Title Description
B07A Application suspended after technical examination (opinion) [chapter 7.1 patent gazette]
B09A Decision: intention to grant [chapter 9.1 patent gazette]
B16A Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]

Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 10/02/2012, OBSERVADAS AS CONDICOES LEGAIS.

B25D Requested change of name of applicant approved

Owner name: NIPPON STEEL CORPORATION (JP)