WO2009044135A3 - Duplex stainless steel casting alloy composition - Google Patents

Duplex stainless steel casting alloy composition Download PDF

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Publication number
WO2009044135A3
WO2009044135A3 PCT/GB2008/003329 GB2008003329W WO2009044135A3 WO 2009044135 A3 WO2009044135 A3 WO 2009044135A3 GB 2008003329 W GB2008003329 W GB 2008003329W WO 2009044135 A3 WO2009044135 A3 WO 2009044135A3
Authority
WO
WIPO (PCT)
Prior art keywords
around
stainless steel
alloy composition
duplex stainless
steel casting
Prior art date
Application number
PCT/GB2008/003329
Other languages
French (fr)
Other versions
WO2009044135A2 (en
Inventor
Stanley Alan Hebdon
Roger Francis
Original Assignee
Weir Materials Ltd
Stanley Alan Hebdon
Roger Francis
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 Weir Materials Ltd, Stanley Alan Hebdon, Roger Francis filed Critical Weir Materials Ltd
Publication of WO2009044135A2 publication Critical patent/WO2009044135A2/en
Publication of WO2009044135A3 publication Critical patent/WO2009044135A3/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

Landscapes

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

Abstract

The present invention provides a duplex stainless steel casting alloy composition comprising, in weight percent: up to around 0.05 % carbon; around 0.5 % to 1.2 % silicon; around 1 % to 2 % manganese; around 3.7 % to 4.5 % nickel; around 21 % to 23 % chromium; around 1.5 % to 2.5 % molybdenum; around 0.15 % to 0.25 % nitrogen; and balance iron and incidental impurities.
PCT/GB2008/003329 2007-10-03 2008-10-02 Duplex stainless steel casting alloy composition WO2009044135A2 (en)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
GB0719288.3 2007-10-03
GB0719288A GB0719288D0 (en) 2007-10-03 2007-10-03 Duplex stainless steel casting alloy compsotion
US1462007P 2007-12-18 2007-12-18
US61/014,620 2007-12-18
GB0809316.3 2008-05-22
GB0809316A GB0809316D0 (en) 2007-10-03 2008-05-22 Duplex stainless steel casting alloy composition

Publications (2)

Publication Number Publication Date
WO2009044135A2 WO2009044135A2 (en) 2009-04-09
WO2009044135A3 true WO2009044135A3 (en) 2009-06-11

Family

ID=38739041

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2008/003329 WO2009044135A2 (en) 2007-10-03 2008-10-02 Duplex stainless steel casting alloy composition

Country Status (2)

Country Link
GB (2) GB0719288D0 (en)
WO (1) WO2009044135A2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9862168B2 (en) 2011-01-27 2018-01-09 Nippon Steel & Sumikin Stainless Steel Corporation Alloying element-saving hot rolled duplex stainless steel material, clad steel plate having duplex stainless steel as cladding material therefor, and production method for same
JP5868206B2 (en) 2011-03-09 2016-02-24 新日鐵住金ステンレス株式会社 Duplex stainless steel with excellent weld corrosion resistance

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3592634A (en) * 1968-04-30 1971-07-13 Armco Steel Corp High-strength corrosion-resistant stainless steel
USRE28772E (en) * 1968-04-30 1976-04-13 Armco Steel Corporation High strength corrosion-resistant stainless steel
EP0156778A2 (en) * 1984-03-30 1985-10-02 Santrade Ltd. Ferritic-austenitic stainless steel
EP1061151A1 (en) * 1999-06-15 2000-12-20 Kubota Corporation Ferritic-austenitic two-phase stainless steel

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3592634A (en) * 1968-04-30 1971-07-13 Armco Steel Corp High-strength corrosion-resistant stainless steel
USRE28772E (en) * 1968-04-30 1976-04-13 Armco Steel Corporation High strength corrosion-resistant stainless steel
EP0156778A2 (en) * 1984-03-30 1985-10-02 Santrade Ltd. Ferritic-austenitic stainless steel
EP1061151A1 (en) * 1999-06-15 2000-12-20 Kubota Corporation Ferritic-austenitic two-phase stainless steel

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
CVIJOVIC Z ET AL: "Microstructure and pitting corrosion resistance of annealed duplex stainless steel", CORROSION SCIENCE, OXFORD, GB, vol. 48, no. 12, 1 December 2006 (2006-12-01), pages 3887 - 3906, XP025166429, ISSN: 0010-938X, [retrieved on 20061201] *
MOHANTY B P ET AL: "Role of chlorides in hot corrosion of a cast Fe-Cr-Ni alloy. Part I: Experimental studies", CORROSION SCIENCE, OXFORD, GB, vol. 46, no. 12, 1 December 2004 (2004-12-01), pages 2893 - 2907, XP004578587, ISSN: 0010-938X *
SHORES D A ET AL: "Role of chlorides in hot corrosion of a cast Fe-Cr-Ni alloy. Part II: thermochemical model studies", CORROSION SCIENCE, OXFORD, GB, vol. 46, no. 12, 1 December 2004 (2004-12-01), pages 2909 - 2924, XP004578588, ISSN: 0010-938X *

Also Published As

Publication number Publication date
WO2009044135A2 (en) 2009-04-09
GB0809316D0 (en) 2008-07-02
GB0719288D0 (en) 2007-11-14

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