NO20056009L - Duplex stainless steel - Google Patents

Duplex stainless steel

Info

Publication number
NO20056009L
NO20056009L NO20056009A NO20056009A NO20056009L NO 20056009 L NO20056009 L NO 20056009L NO 20056009 A NO20056009 A NO 20056009A NO 20056009 A NO20056009 A NO 20056009A NO 20056009 L NO20056009 L NO 20056009L
Authority
NO
Norway
Prior art keywords
stainless steel
duplex stainless
inclusions
microns
mass
Prior art date
Application number
NO20056009A
Other languages
Norwegian (no)
Inventor
Tomohiko Omura
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 NO20056009L publication Critical patent/NO20056009L/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
    • 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
    • C22C38/04—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
    • C22C38/18—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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Heat Treatment Of Steel (AREA)

Abstract

Dupleks rustfiitt stål med utmerket gropkorrosjonsmotstand og sveisbarhet og spesielt et dupleks rustfritt stål som ikke danner små intermetalliske forbindelser selv i en sveisevarmepåvirket sone er tilveiebrakt. Det har en kjemisk sammensetning omfattende C: høyst 0,03 %, Si: høyst 1,0 %, Mn: høyst 1,5 %, P: høyst 0,040 %, S: heyst 0,008 %, Cr: 23,0 - 27,0 %,Mo: 2,0 - 4,0 %, Ni: 5,0 - 9,0 %, W: mer enn 1,5 % opptil 5,0 %, N: 0,24 - 0,35 %, og en rest av Fe og forurensninger, og som tilfredsstiller ligningene PREW = Cr + 3,3(Mo + 0,5W) + 16N er minst 40 Mo + 1, 1 Ni < 12,5 Mo-0,8 Ni <-1,6 hvori antallet av grove inklusjoner med den følgende definisjon iakttatt i et tverrsnitt er høyst 10 per mm^. Idet grove inklusjoner heri er definert som inklusjoner som inneholder minst 20 masse% av Al og som har en hoveddiameter på minst 5 mikrometer. Tetthet (antall av Inklusjoner/mm^) av grove inklusjoner Inneholdende minst 20 masse% Al og som haren hoveddiameter på minst 5 mikrometerDuplex stainless steel with excellent pit corrosion resistance and weldability and especially a duplex stainless steel which does not form small intermetallic connections even in a weld heat affected zone is provided. It has a chemical composition comprising C: at most 0.03%, Si: at most 1.0%, Mn: at most 1.5%, P: at most 0.040%, S: raised 0.008%, Cr: 23.0 - 27, 0%, Mo: 2.0 - 4.0%, Ni: 5.0 - 9.0%, W: more than 1.5% up to 5.0%, N: 0.24 - 0.35%, and a residue of Fe and impurities, and satisfying the equations PREW = Cr + 3.3 (Mo + 0.5W) + 16N is at least 40 Mo + 1, 1 Ni <12.5 Mo-0.8 Ni <-1 , 6 wherein the number of coarse inclusions with the following definition observed in a cross section is at most 10 per mm 2. As coarse inclusions herein are defined as inclusions containing at least 20 mass% of Al and having a main diameter of at least 5 microns. Density (number of Inclusions / mm ^) of coarse inclusions Containing at least 20 mass% Al and having a head diameter of at least 5 microns

NO20056009A 2003-06-30 2005-12-16 Duplex stainless steel NO20056009L (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2003188045 2003-06-30
PCT/JP2004/009511 WO2005001151A1 (en) 2003-06-30 2004-06-29 Duplex stainless steel

Publications (1)

Publication Number Publication Date
NO20056009L true NO20056009L (en) 2006-01-11

Family

ID=33549741

Family Applications (1)

Application Number Title Priority Date Filing Date
NO20056009A NO20056009L (en) 2003-06-30 2005-12-16 Duplex stainless steel

Country Status (9)

Country Link
US (1) US20060191605A1 (en)
EP (1) EP1645650A4 (en)
JP (1) JP4265605B2 (en)
KR (1) KR100704201B1 (en)
CN (1) CN100497704C (en)
AU (1) AU2004252373B2 (en)
BR (1) BRPI0412092A (en)
NO (1) NO20056009L (en)
WO (1) WO2005001151A1 (en)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE530847C2 (en) * 2006-12-14 2008-09-30 Sandvik Intellectual Property Plate for plate heat exchangers, plate heat exchangers made up of such plates and use of this plate heat exchanger
SE531593C2 (en) * 2007-10-26 2009-06-02 Sandvik Intellectual Property Heat exchanger for phosphoric acid environment
KR101569306B1 (en) 2007-11-29 2015-11-13 에이티아이 프로퍼티즈, 인코퍼레이티드 Lean austenitic stainless steel
DK2229463T3 (en) 2007-12-20 2017-10-23 Ati Properties Llc Corrosion resistant lean austenitic stainless steel
US8337749B2 (en) 2007-12-20 2012-12-25 Ati Properties, Inc. Lean austenitic stainless steel
MX2010006038A (en) 2007-12-20 2010-08-11 Ati Properties Inc Austenitic stainless steel low in nickel containing stabilizing elements.
JP5018863B2 (en) * 2009-11-13 2012-09-05 住友金属工業株式会社 Duplex stainless steel with excellent alkali resistance
CN102296248B (en) * 2011-08-29 2013-04-24 江苏九胜特钢制品有限公司 Diphase tungsten stainless steel alloy material and preparation method thereof
CN102296249A (en) * 2011-08-29 2011-12-28 江苏九胜特钢制品有限公司 Diphase stainless steel alloy material substituting tungsten for molybdenum and preparation method thereof
JP6327633B2 (en) * 2013-09-19 2018-05-23 セイコーインスツル株式会社 Diaphragm made of duplex stainless steel
CN103602915B (en) * 2013-11-22 2015-11-18 山东建筑大学 High carbon and chromium duplex stainless steel
US20170327915A1 (en) * 2014-10-24 2017-11-16 Nippon Steel & Sumitomo Metal Corporation Duplex stainless steel and method for producing the same
CN108048755B (en) * 2017-11-10 2019-06-28 洛阳双瑞特种装备有限公司 A kind of high rigidity anticorrosive cast stainless steel for fluid conveying
CN110016625B (en) * 2019-05-15 2021-08-03 丹阳市华龙特钢有限公司 High-purity corrosion-resistant alloy material
JP7469707B2 (en) 2020-10-23 2024-04-17 日本製鉄株式会社 Duplex stainless steel welded joints
CN113337779A (en) * 2021-05-21 2021-09-03 烟台恒邦合金材料有限公司 Wear-resistant and corrosion-resistant stainless steel material for pumps and preparation method thereof

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5079152A (en) * 1987-05-28 1992-01-07 Scripps Clinic And Research Foundation Antibody combining sites that exhibit stereoselective synthase activity, and methods using the same
JP2500162B2 (en) * 1991-11-11 1996-05-29 住友金属工業株式会社 High strength duplex stainless steel with excellent corrosion resistance
SE501321C2 (en) * 1993-06-21 1995-01-16 Sandvik Ab Ferrite-austenitic stainless steel and use of the steel
JP3446294B2 (en) * 1994-04-05 2003-09-16 住友金属工業株式会社 Duplex stainless steel
EP0683241B1 (en) * 1994-05-21 2000-08-16 Yong Soo Park Duplex stainless steel with high corrosion resistance
JPH0813094A (en) * 1994-06-24 1996-01-16 Sumitomo Metal Mining Co Ltd Duplex stainless cast steel and production thereof
JPH08176742A (en) * 1994-12-27 1996-07-09 Sumitomo Metal Ind Ltd Duplex stainless steel excellent in corrosion resistance in hydrogen sulfide atmosphere
JP3241263B2 (en) * 1996-03-07 2001-12-25 住友金属工業株式会社 Manufacturing method of high strength duplex stainless steel pipe
JP3127822B2 (en) * 1996-04-10 2001-01-29 住友金属工業株式会社 Manufacturing method of seamless stainless steel pipe made of duplex stainless steel
JPH1088288A (en) * 1996-09-18 1998-04-07 Sumitomo Metal Ind Ltd Duplex stainless steel material for high purity gas, and its production
SE513247C2 (en) * 1999-06-29 2000-08-07 Sandvik Ab Ferrite austenitic steel alloy
JP3534032B2 (en) * 2000-02-03 2004-06-07 住友金属工業株式会社 Method for producing duplex stainless steel pipe
JP3758508B2 (en) * 2001-02-13 2006-03-22 住友金属工業株式会社 Manufacturing method of duplex stainless steel pipe
SE524951C2 (en) * 2001-09-02 2004-10-26 Sandvik Ab Use of a duplex stainless steel alloy

Also Published As

Publication number Publication date
CN100497704C (en) 2009-06-10
AU2004252373A1 (en) 2005-01-06
KR20060026898A (en) 2006-03-24
CN1816640A (en) 2006-08-09
AU2004252373B2 (en) 2007-02-22
JPWO2005001151A1 (en) 2006-08-10
KR100704201B1 (en) 2007-04-09
BRPI0412092A (en) 2006-09-05
EP1645650A4 (en) 2007-07-25
US20060191605A1 (en) 2006-08-31
WO2005001151A1 (en) 2005-01-06
EP1645650A1 (en) 2006-04-12
JP4265605B2 (en) 2009-05-20

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