DE69222027D1 - Stainless super duplex steel with high corrosion resistance and high yield strength in solution annealed condition - Google Patents

Stainless super duplex steel with high corrosion resistance and high yield strength in solution annealed condition

Info

Publication number
DE69222027D1
DE69222027D1 DE69222027T DE69222027T DE69222027D1 DE 69222027 D1 DE69222027 D1 DE 69222027D1 DE 69222027 T DE69222027 T DE 69222027T DE 69222027 T DE69222027 T DE 69222027T DE 69222027 D1 DE69222027 D1 DE 69222027D1
Authority
DE
Germany
Prior art keywords
corrosion resistance
yield strength
stainless
max
annealed condition
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.)
Expired - Lifetime
Application number
DE69222027T
Other languages
German (de)
Inventor
Luca Foroni
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.)
FORONI SpA
Original Assignee
FORONI SpA
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=11400969&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=DE69222027(D1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by FORONI SpA filed Critical FORONI SpA
Application granted granted Critical
Publication of DE69222027D1 publication Critical patent/DE69222027D1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • C22C38/18—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

Landscapes

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

Abstract

The steel, object of our invention is highly resistant to stress corrosion in acid and alkaline environment, and has furthermore high pitting and crevice corrosion resistance. This steel has a very high yield strength, even in the solution annealed condition. The steel consists of: (in weight percent> C 0.025 max Mn 0.80 max Si 0.80 max Cr 24 - 26 Ni 6.5 - 8.0 Mo 3.0 - 4.0 Cu 1.2 - 2.0 W 0.8 - 1.2 N 0.23 - 0.33 S 0.002 max P 0.025 max Fe balance with the proviso: Pitting Index = Cr + 3.3 Mo + 16N > 42
DE69222027T 1992-04-24 1992-10-26 Stainless super duplex steel with high corrosion resistance and high yield strength in solution annealed condition Expired - Lifetime DE69222027D1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITRM920309A IT1257695B (en) 1992-04-24 1992-04-24 AUSTENO-FERRITIC STEEL WITH HIGH CORROSION RESISTANCE AND HIGH STRENGTH AT THE SOLUBIZED STATE.

Publications (1)

Publication Number Publication Date
DE69222027D1 true DE69222027D1 (en) 1997-10-09

Family

ID=11400969

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69222027T Expired - Lifetime DE69222027D1 (en) 1992-04-24 1992-10-26 Stainless super duplex steel with high corrosion resistance and high yield strength in solution annealed condition

Country Status (4)

Country Link
EP (1) EP0566814B1 (en)
AT (1) ATE157710T1 (en)
DE (1) DE69222027D1 (en)
IT (1) IT1257695B (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1263251B (en) 1992-10-27 1996-08-05 Sviluppo Materiali Spa PROCEDURE FOR THE PRODUCTION OF SUPER-DUPLEX STAINLESS STEEL PRODUCTS.
FR2711674B1 (en) * 1993-10-21 1996-01-12 Creusot Loire Austenitic stainless steel with high characteristics having great structural stability and uses.
JP3446294B2 (en) * 1994-04-05 2003-09-16 住友金属工業株式会社 Duplex stainless steel
DE69518354T2 (en) * 1994-05-21 2001-04-26 Park Yong S Stainless duplex steel with high corrosion resistance
FI100422B (en) * 1994-07-11 1997-11-28 Metso Paper Inc Preparation of roller
DE10357653A1 (en) * 2003-12-10 2005-07-07 Abb Research Ltd. Ship propulsion system, e.g. for container ships and liquid gas tankers, has a propeller at a motor housing and carrier arm attached to the hull of a non-corroding metal alloy
US8710405B2 (en) * 2005-04-15 2014-04-29 Nippon Steel & Sumikin Stainless Steel Corporation Austenitic stainless steel welding wire and welding structure
JP6115935B2 (en) * 2013-01-25 2017-04-19 セイコーインスツル株式会社 Aging heat treated material made of duplex stainless steel, diaphragm, pressure sensor, diaphragm valve using the same, and method for producing duplex stainless steel
GB2546661B (en) * 2015-12-23 2018-04-25 Goodwin Plc A welding consumable, a method of welding, and a welded product
EP3919634A4 (en) * 2019-01-30 2022-03-16 JFE Steel Corporation Duplex stainless steel, seamless steel pipe, and production method for duplex stainless steel
CN111197144A (en) * 2020-02-21 2020-05-26 青岛三庆金属有限公司 High-temperature-resistant stainless steel composition for food heating container

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61564A (en) * 1984-06-13 1986-01-06 Nippon Kokan Kk <Nkk> Two-phase stainless steel having superior impact characteristic
GB2203680B (en) * 1987-04-21 1991-06-26 Nippon Yakin Kogyo Co Ltd A direct production process of a stainless steel strip having excellent superplasticity and surface properties
US4816085A (en) * 1987-08-14 1989-03-28 Haynes International, Inc. Tough weldable duplex stainless steel wire
US4915752A (en) * 1988-09-13 1990-04-10 Carondelet Foundry Company Corrosion resistant alloy

Also Published As

Publication number Publication date
EP0566814A1 (en) 1993-10-27
ATE157710T1 (en) 1997-09-15
ITRM920309A0 (en) 1992-04-24
ITRM920309A1 (en) 1993-10-24
EP0566814B1 (en) 1997-09-03
IT1257695B (en) 1996-02-01

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Legal Events

Date Code Title Description
8332 No legal effect for de