EP0005439B2 - Verwendung eines ferritisch-austenitischen Chrom-Nickel-Stahles - Google Patents

Verwendung eines ferritisch-austenitischen Chrom-Nickel-Stahles Download PDF

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Publication number
EP0005439B2
EP0005439B2 EP79101013A EP79101013A EP0005439B2 EP 0005439 B2 EP0005439 B2 EP 0005439B2 EP 79101013 A EP79101013 A EP 79101013A EP 79101013 A EP79101013 A EP 79101013A EP 0005439 B2 EP0005439 B2 EP 0005439B2
Authority
EP
European Patent Office
Prior art keywords
ferritic
steel
maximum
austenitic
max
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
Application number
EP79101013A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0005439B1 (de
EP0005439A1 (de
Inventor
Hermann Dipl.-Ing. Dr. Weingerl
Manfred Dipl.-Ing. Koren
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.)
Voestalpine Boehler Edelstahl GmbH
Original Assignee
Vereinigte Edelstahlwerke AG
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
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Application filed by Vereinigte Edelstahlwerke AG filed Critical Vereinigte Edelstahlwerke AG
Publication of EP0005439A1 publication Critical patent/EP0005439A1/de
Publication of EP0005439B1 publication Critical patent/EP0005439B1/de
Application granted granted Critical
Publication of EP0005439B2 publication Critical patent/EP0005439B2/de
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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
    • C22C38/58—Ferrous alloys, e.g. steel alloys containing chromium with nickel with more than 1.5% by weight of manganese

Definitions

  • the corrosion-resistant steel of the composition max. 0.1% C; Max. 1.0% Si; Max. 2.0% Mn; Max. 0.045% P; Max. 0.030% S; 26.0 / 28.0% Cr; 1.3 / 2.0% Mo; 4.0 / 5.0% Ni; (Material no. 1.4460) or the largely analog Swedish standard steel SIS 2324, which is also melted with nitrogen contents down to 0.2% N, does not meet the requirements for strength and impact strength in certain applications, especially in the manufacture of forgings. By increasing the nitrogen content up to 0.4% N the mechanical quality values could be partly improved; however, forging shows a strong susceptibility to crack formation.
  • the invention accordingly consists in the use of a ferritic-austenitic Cr-Ni steel which contains 30 to 70% austenite and which has a max. 0.1% C, max. 1.0% Si, 4.5 to 6.0% Mn, 22.0 to 28.0% Cr, 3.5 to 5.5% Ni, 1.0 to 3.0% Mo, 0.35 to Contains 0.6% N, remainder iron and unavoidable impurities, for forgings that must have a notched impact strength (according to ISO-V) of more than 35 joules with a minimum yield strength of 600 N / mm 2 even with a double degree of deformation.
  • a ferritic-austenitic Cr-Ni steel which contains 30 to 70% austenite and which has a max. 0.1% C, max. 1.0% Si, 4.5 to 6.0% Mn, 22.0 to 28.0% Cr, 3.5 to 5.5% Ni, 1.0 to 3.0% Mo, 0.35 to Contains 0.6% N, remainder iron and unavoidable impurities, for forgings that must have a notched
  • a steel is used for the purpose mentioned, the max. 0.1% C, max. 1.0% Si, 4.5 to 5.5% Mn, 25.0 to 27.5% Cr, 3.5 to 5.0% Ni, 1.3 to 2.5% Mo, 0.35 to 0.45% N, balance iron and inevitable impurities.
  • a steel is used for the stated purpose with the proviso that the Mn content of the alloy is 4.5 to 6.0%.
  • a steel is used for the above purpose with the proviso that its alloy preferably has a Cr content of 24.0 to 27.5%.
  • Spherical bodies for separators were produced from pieces of the same block weighing 200 kg. In the zones of the spherical bodies deformed to different degrees due to the production, values between 53 and 90 J at yield strengths between 620 and 630 N / mm 2 were determined in the notched impact test carried out analogously.
  • a piece of the other block was under the Forging press at forging temperatures of the same shape deformed onto a 3.6 m long shaft with a raw diameter of 320 mm.
  • values of 200 J in the longitudinal and 70J in the Transverse direction can be determined.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Forging (AREA)
  • Heat Treatment Of Steel (AREA)
  • Heat Treatment Of Articles (AREA)
EP79101013A 1978-04-10 1979-04-03 Verwendung eines ferritisch-austenitischen Chrom-Nickel-Stahles Expired EP0005439B2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2815439A DE2815439C3 (de) 1978-04-10 1978-04-10 Verwendung eines ferritisch-austenitischen Chrom-Nickel-Stahles
DE2815439 1978-04-10

Publications (3)

Publication Number Publication Date
EP0005439A1 EP0005439A1 (de) 1979-11-28
EP0005439B1 EP0005439B1 (de) 1981-06-10
EP0005439B2 true EP0005439B2 (de) 1987-01-07

Family

ID=6036599

Family Applications (1)

Application Number Title Priority Date Filing Date
EP79101013A Expired EP0005439B2 (de) 1978-04-10 1979-04-03 Verwendung eines ferritisch-austenitischen Chrom-Nickel-Stahles

Country Status (8)

Country Link
US (1) US4272305A (cs)
EP (1) EP0005439B2 (cs)
JP (1) JPS5814872B2 (cs)
AT (1) AT360571B (cs)
CA (1) CA1127881A (cs)
CS (1) CS216926B2 (cs)
DD (1) DD142894A5 (cs)
DE (1) DE2815439C3 (cs)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0042180B1 (en) * 1980-06-17 1987-03-25 Kabushiki Kaisha Toshiba A high cavitation erosion resistance stainless steel and hydraulic machines being made of the same
CH654594A5 (de) * 1981-03-16 1986-02-28 Bbc Brown Boveri & Cie Turbinenschaufelwerkstoff hoher festigkeit gegen korrosionsermuedung, verfahren zu dessen herstellung und seine verwendung.
US4605449A (en) * 1981-05-19 1986-08-12 Arbed S.A. Process for producing a rolled steel product having high weldability, a high yield strength and a good notch impact toughness at very low temperatures
AT371399B (de) * 1982-03-18 1983-06-27 Ver Edelstahlwerke Ag Verfahren zur herstellung von geschweissten gegenstaenden aus einer ferritisch-austenitischen cr-ni-mo-stahllegierung
US4405389A (en) * 1982-10-21 1983-09-20 Ingersoll-Rand Company Austenitic stainless steel casting alloy for corrosive applications
US4832765A (en) * 1983-01-05 1989-05-23 Carpenter Technology Corporation Duplex alloy
DE3310693A1 (de) * 1983-03-24 1984-10-04 Fried. Krupp Gmbh, 4300 Essen Korrosionsbestaendiger chromstahl und verfahren zu seiner herstellung
JPS6052523A (ja) * 1983-09-01 1985-03-25 Nippon Stainless Steel Co Ltd フエライト−オ−ステナイト二相ステンレス鋼の製造方法
AT397515B (de) * 1990-05-03 1994-04-25 Boehler Edelstahl Hochfeste korrosionsbeständige duplex-legierung
KR100444248B1 (ko) * 2001-04-27 2004-08-16 한국산업기술평가원 열간가공성이 우수한 고망간 듀플렉스 스텐레스강과 그제조방법
DE102011082850A1 (de) * 2011-09-16 2013-03-21 Siemens Aktiengesellschaft Verdichterschaufel und Verfahren zu ihrer Herstellung
US9896752B2 (en) 2014-07-31 2018-02-20 Honeywell International Inc. Stainless steel alloys, turbocharger turbine housings formed from the stainless steel alloys, and methods for manufacturing the same
US10316694B2 (en) 2014-07-31 2019-06-11 Garrett Transportation I Inc. Stainless steel alloys, turbocharger turbine housings formed from the stainless steel alloys, and methods for manufacturing the same
US9534281B2 (en) 2014-07-31 2017-01-03 Honeywell International Inc. Turbocharger turbine housings formed from the stainless steel alloys, and methods for manufacturing the same
BR102018068426A2 (pt) * 2018-09-12 2020-03-24 Mahle Metal Leve S.A. Válvula de alívio para um turbocompressor e processo para fabricação de válvula de alívio

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2484903A (en) * 1948-09-24 1949-10-18 Crucible Steel Company Heat and corrosion resisting alloy steel
US2783169A (en) * 1955-02-15 1957-02-26 Ford Motor Co Process of producing nitrogen rich wrought austenitic alloys
DE1194587B (de) * 1963-06-06 1965-06-10 Phoenix Rheinrohr Ag Verwendung von austenitischen Stahllegierungen als Werkstoff fuer geschweisste Bauteile, die dem Angriff von Seewasser und/oder Meeres-atmosphaere ausgesetzt sind
US3311511A (en) * 1963-08-12 1967-03-28 Armco Steel Corp Alloy steel and method
US3362813A (en) * 1964-09-15 1968-01-09 Carpenter Steel Co Austenitic stainless steel alloy
GB1158614A (en) * 1967-03-16 1969-07-16 Langley Alloys Ltd Improvement in Stainless Steels
US3567434A (en) * 1967-03-17 1971-03-02 Langley Alloys Ltd Stainless steels
US3592634A (en) * 1968-04-30 1971-07-13 Armco Steel Corp High-strength corrosion-resistant stainless steel
US3926685A (en) * 1969-06-03 1975-12-16 Andre Gueussier Semi-ferritic stainless manganese steel
JPS5424364B2 (cs) * 1973-05-04 1979-08-21
AT333819B (de) * 1973-12-10 1976-12-10 Ver Edelstahlwerke Ag Austenitisch-ferritischer chrom-nickel-stickstoff-stahl
US4032367A (en) * 1974-10-28 1977-06-28 Langley Alloys Limited Corrosion resistant steels
US4099966A (en) * 1976-12-02 1978-07-11 Allegheny Ludlum Industries, Inc. Austenitic stainless steel

Also Published As

Publication number Publication date
US4272305A (en) 1981-06-09
JPS54155115A (en) 1979-12-06
DE2815439B2 (de) 1980-02-21
DE2815439C3 (de) 1980-10-09
ATA232679A (de) 1980-06-15
JPS5814872B2 (ja) 1983-03-22
DD142894A5 (de) 1980-07-16
EP0005439B1 (de) 1981-06-10
AT360571B (de) 1981-01-26
DE2815439A1 (de) 1979-10-18
CS216926B2 (en) 1982-12-31
EP0005439A1 (de) 1979-11-28
CA1127881A (en) 1982-07-20

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