BR112012005005A2 - duplex stainless steel. - Google Patents

duplex stainless steel.

Info

Publication number
BR112012005005A2
BR112012005005A2 BR112012005005A BR112012005005A BR112012005005A2 BR 112012005005 A2 BR112012005005 A2 BR 112012005005A2 BR 112012005005 A BR112012005005 A BR 112012005005A BR 112012005005 A BR112012005005 A BR 112012005005A BR 112012005005 A2 BR112012005005 A2 BR 112012005005A2
Authority
BR
Brazil
Prior art keywords
less
stainless steel
duplex stainless
formulas
steel
Prior art date
Application number
BR112012005005A
Other languages
Portuguese (pt)
Other versions
BR112012005005B1 (en
Inventor
Hideki Takabe
Hisashi Amaya
Kazuhiro Ogawa
Original Assignee
Sumitomo Metal Ind
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 Sumitomo Metal Ind filed Critical Sumitomo Metal Ind
Publication of BR112012005005A2 publication Critical patent/BR112012005005A2/en
Publication of BR112012005005B1 publication Critical patent/BR112012005005B1/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
    • C22C38/18—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
    • 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
    • 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
    • C22C38/02—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
    • C22C38/18—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
    • C22C38/58—Ferrous alloys, e.g. steel alloys containing chromium with nickel with more than 1.5% by weight of manganese

Abstract

fornecer um aço inoxidável dúplex excelente na soldabilidade durante a soldagem de grande entrada de calor e excelente na resistênvia ao craqueamento por corrosão por tensão em um ambiente de cloreto que contém gases associados corrosivos. solução. um aço inoxidável dúplex que tem uma composição química que consiste, % em massa, em c: 0,003% ou menos,: 0,2 a 1%, mn: 5,0% ou menos, p: 0,40% ou menos, s: 0,010% ou menos, al sol.: 0.040% ou menos, ni: 4 a 8%, cr: 20 a 28%, mo: 0,5 a 2,0%, cu: mais do que 2,0% e 4,0% ou menos de n: 0,1 a 0,35%, e opcionalmente contém um ou mais selecionados dentr v, ca, mg, b e um meta(is) terra-rara, com o equilíbrio sendo fe e impurezas; em que o aço inoxidável dúplex satisfaz as relações das fórmulas (1) e (2) a seguir: 2,2cr + 7mo + 3cu >66 (1) cr + 11mo + 10ni < 12 (cu + 30n) (2) em que os spimbolos de elementos nas fórmulas (1) e (2), respectivamente, representam os teores (unidade: % de massa) dos elementos no aço.Provide excellent duplex stainless steel in weldability during high heat input welding and excellent in stress corrosion cracking resistance in a chloride environment containing corrosive associated gases. solution. a duplex stainless steel having a chemical composition consisting by weight% c: 0.003% or less: 0.2 to 1%, mn: 5.0% or less, p: 0.40% or less, s: 0.010% or less, sol: 0.040% or less, ni: 4 to 8%, cr: 20 to 28%, wt: 0.5 to 2.0%, cu: more than 2.0% and 4.0% or less of n: 0.1 to 0.35%, and optionally contains one or more selected from v, ca, mg, b and a rare earth goal (s), with the balance being fe and impurities. ; wherein the duplex stainless steel meets the ratios of the following formulas (1) and (2): 2.2cr + 7mo + 3cu> 66 (1) cr + 11mo + 10ni <12 (cu + 30n) (2) where The element symbols in the formulas (1) and (2), respectively, represent the contents (unit: mass%) of the elements in the steel.

BR112012005005-2A 2009-09-10 2010-09-01 STAINLESS STEEL DUPLEX BR112012005005B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2009-209160 2009-09-10
JP2009209160 2009-09-10
PCT/JP2010/064953 WO2011030709A1 (en) 2009-09-10 2010-09-01 Two-phase stainless steel

Publications (2)

Publication Number Publication Date
BR112012005005A2 true BR112012005005A2 (en) 2016-05-03
BR112012005005B1 BR112012005005B1 (en) 2023-01-24

Family

ID=43732382

Family Applications (1)

Application Number Title Priority Date Filing Date
BR112012005005-2A BR112012005005B1 (en) 2009-09-10 2010-09-01 STAINLESS STEEL DUPLEX

Country Status (10)

Country Link
US (1) US20120177529A1 (en)
EP (2) EP2476771B1 (en)
JP (1) JP4640536B1 (en)
CN (1) CN102482746B (en)
AU (1) AU2010293591B2 (en)
BR (1) BR112012005005B1 (en)
CA (1) CA2770378C (en)
IN (1) IN2012DN01250A (en)
MX (2) MX2012002870A (en)
WO (1) WO2011030709A1 (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2012218661B2 (en) * 2011-02-14 2015-04-30 Nippon Steel Corporation Duplex stainless steel
ES2795753T3 (en) * 2011-02-14 2020-11-24 Nippon Steel Corp Duplex stainless steel plate or pipe and production process thereof
JP5170351B1 (en) * 2011-09-06 2013-03-27 新日鐵住金株式会社 Duplex stainless steel
US9555496B2 (en) 2012-03-30 2017-01-31 Nippon Steel & Sumitomo Metal Corporation Process for producing welded joint using GMA welding and CO2 as a shielding gas
CN103014549B (en) * 2012-12-26 2015-11-18 振石集团东方特钢股份有限公司 A kind of high-performance diphase stainless steel and working method thereof
CN103602915B (en) * 2013-11-22 2015-11-18 山东建筑大学 High carbon and chromium duplex stainless steel
AU2017274993B2 (en) 2016-06-01 2019-09-12 Nippon Steel Corporation Duplex stainless steel and duplex stainless steel manufacturing method
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
CN107829029B (en) * 2017-11-10 2020-02-07 洛阳双瑞特种装备有限公司 Smelting process method of ZG022Cr22Ni5Mo3N material duplex stainless steel
CN115584443A (en) * 2021-07-05 2023-01-10 中国石油天然气集团有限公司 Copper-containing antibacterial duplex stainless steel continuous tube and processing method thereof

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55158256A (en) * 1979-05-29 1980-12-09 Daido Steel Co Ltd Ferritic-austenitic two-phase stainless steel
CA1214667A (en) * 1983-01-05 1986-12-02 Terry A. Debold Duplex alloy
US4740254A (en) * 1984-08-06 1988-04-26 Sandusky Foundry & Machine Co. Pitting resistant duplex stainless steel alloy
US4604887A (en) * 1984-11-30 1986-08-12 Kawasaki Steel Corporation Duplex stainless steel seamless pipe and a method for producing the same
US4816085A (en) * 1987-08-14 1989-03-28 Haynes International, Inc. Tough weldable duplex stainless steel wire
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
WO1996018751A1 (en) 1994-12-16 1996-06-20 Sumitomo Metal Industries, Ltd. Duplex stainless steel excellent in corrosion resistance
JPH1060598A (en) * 1996-08-19 1998-03-03 Nkk Corp Seawater resistant precipitation strengthening type duplex stainless steel
US6033497A (en) * 1997-09-05 2000-03-07 Sandusky International, Inc. Pitting resistant duplex stainless steel alloy with improved machinability and method of making thereof
JP2000313940A (en) * 1999-04-27 2000-11-14 Sumitomo Metal Ind Ltd Duplex stainless steel material and its manufacture
SE513247C2 (en) * 1999-06-29 2000-08-07 Sandvik Ab Ferrite austenitic steel alloy
JP2003171743A (en) 2001-12-06 2003-06-20 Aichi Steel Works Ltd Duplex stainless steel having excellent strength, toughness and seawater resistance, and production method therefor
JP2004277767A (en) * 2003-03-13 2004-10-07 Nisshin Steel Co Ltd Austenitic stainless steel for automotive oil filler pipe and fuel tank, and automotive oil filler pipe and fuel tank
JP4915121B2 (en) * 2006-03-31 2012-04-11 住友金属工業株式会社 Manufacturing method of duplex stainless steel seamless pipe
JP5072285B2 (en) * 2006-08-08 2012-11-14 新日鐵住金ステンレス株式会社 Duplex stainless steel
JP5171197B2 (en) * 2007-10-10 2013-03-27 新日鐵住金ステンレス株式会社 Duplex stainless steel wire for high strength and high corrosion resistance bolts excellent in cold forgeability, steel wire and bolt, and method for producing the same
AU2012218661B2 (en) * 2011-02-14 2015-04-30 Nippon Steel Corporation Duplex stainless steel
ES2795753T3 (en) * 2011-02-14 2020-11-24 Nippon Steel Corp Duplex stainless steel plate or pipe and production process thereof

Also Published As

Publication number Publication date
CN102482746B (en) 2016-06-22
EP2902525A1 (en) 2015-08-05
MX352395B (en) 2017-11-22
WO2011030709A1 (en) 2011-03-17
EP2476771B1 (en) 2015-03-04
EP2902525B1 (en) 2016-05-11
CN102482746A (en) 2012-05-30
CA2770378A1 (en) 2011-03-17
EP2476771A4 (en) 2014-07-23
AU2010293591A1 (en) 2012-03-01
JP4640536B1 (en) 2011-03-02
MX2012002870A (en) 2012-04-20
JPWO2011030709A1 (en) 2013-02-07
BR112012005005B1 (en) 2023-01-24
AU2010293591B2 (en) 2013-01-17
IN2012DN01250A (en) 2015-05-15
US20120177529A1 (en) 2012-07-12
CA2770378C (en) 2014-02-18
EP2476771A1 (en) 2012-07-18

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Legal Events

Date Code Title Description
B25A Requested transfer of rights approved

Owner name: NIPPON STEEL AND SUMITOMO METAL CORPORATION (JP)

B07A Application suspended after technical examination (opinion) [chapter 7.1 patent gazette]
B09B Patent application refused [chapter 9.2 patent gazette]
B12B Appeal against refusal [chapter 12.2 patent gazette]
B25D Requested change of name of applicant approved

Owner name: NIPPON STEEL CORPORATION (JP)

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 01/09/2010, OBSERVADAS AS CONDICOES LEGAIS. PATENTE CONCEDIDA CONFORME ADI 5.529/DF, QUE DETERMINA A ALTERACAO DO PRAZO DE CONCESSAO.