EP0977901B1 - Alliage fer-manganese-chrome a resistance elevee, resistant a la corrosion - Google Patents

Alliage fer-manganese-chrome a resistance elevee, resistant a la corrosion Download PDF

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Publication number
EP0977901B1
EP0977901B1 EP98921467A EP98921467A EP0977901B1 EP 0977901 B1 EP0977901 B1 EP 0977901B1 EP 98921467 A EP98921467 A EP 98921467A EP 98921467 A EP98921467 A EP 98921467A EP 0977901 B1 EP0977901 B1 EP 0977901B1
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EP
European Patent Office
Prior art keywords
until
mass
alloy
manganese
alloys
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
EP98921467A
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German (de)
English (en)
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EP0977901A1 (fr
Inventor
Ulrich Brill
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.)
Krupp VDM GmbH
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Krupp VDM GmbH
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Filing date
Publication date
Priority claimed from DE19716795A external-priority patent/DE19716795C2/de
Application filed by Krupp VDM GmbH filed Critical Krupp VDM GmbH
Publication of EP0977901A1 publication Critical patent/EP0977901A1/fr
Application granted granted Critical
Publication of EP0977901B1 publication Critical patent/EP0977901B1/fr
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    • 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
    • C22C38/38—Ferrous alloys, e.g. steel alloys containing chromium with more than 1.5% by weight of manganese

Definitions

  • the invention relates to a melted open under atmospheric pressure, hot and cold formable austenitic iron-manganese-chromium alloy, especially for use in aqueous media.
  • AT-PS 152 291 discloses chrome-manganese steels with 0.01 to 1.5 % By mass carbon, 5 to 25% by mass chromium, 10 to 35% by mass Manganese and 0.07 to 0.7 mass% nitrogen and, if necessary, proportionately minor additions of nickel, cobalt, copper, molybdenum, Tungsten, vanadium, niobium, tantalum and titanium.
  • Some disclosed iron-manganese-chromium alloys attribute Corrosion resistance imposes high carbon contents in order to use e.g. for rustproof shafts and Piston rods for shipbuilding or drill collars for petroleum and natural gas industry to achieve sufficient strength.
  • European patent 0 065 631 with 0.17 to is also known 0.40 mass% carbon, 13 to 25 mass% manganese, 0.3 to 1.0 Mass% nitrogen, 12 to 20 mass% chromium and 1.0 to 5.0 mass% Molybdenum.
  • European patent 0 249 117 also allows up to 0.40 mass% Carbon too; at the same time 13.0 to 25.0 mass% of manganese, 0.3 to 1.0 mass% nitrogen, 12.0 to 20.0 mass% chromium and up to 5.0% by mass of molybdenum.
  • Iron-manganese-chromium alloys are also used as so-called cap ring steels with a typical composition such as up to 0.12 mass% carbon, 18.5 mass% manganese, 18.5 % Chromium and 1.0% nitrogen by mass. Materials of this composition are not to be melted without pressure, however only under nitrogen pressure, e.g. in a pressure electroslag remelting plant.
  • the object of the invention is to create one under atmospheric pressure open-melt, hot and cold deformable austenitic Iron-manganese-chromium alloy to design that particular is suitable for use in aqueous media in which the Disadvantages of the prior art cited above no longer exist are, and the greatest possible technical scope enjoy.
  • iron-manganese-chromium alloy which contains the following alloy components (details in mass%): chrome 12.0 to 24.7% nickel up to 0.10% manganese 23.5 to 25.0% silicon up to 0.20% molybdenum 2.0 to 5.7% titanium up to 0.10% carbon up to 0.015% nitrogen 1.05 to 1.30% zirconium 0.01 to 0.15% copper 0.8 to 2.0% boron 0.002 to 0.005% Balance iron including unavoidable impurities.
  • the alloy according to the invention can also be used for production of anchors and setting bolts that are used possibly can be used in damp rooms or wetlands can.
  • WS active sum
  • Fig. 1 shows the resulting range of compositions the alloy according to the invention. From the claim after an active sum ⁇ 59, there is inevitably a molybdenum content of at least 2.0% by mass for the lowest nitrogen content of 1.05% by mass. The highest molybdenum content at 5.7 Mass% results for the highest nitrogen content of 1.3 % By mass and the requirement for at least 12.0% by mass of chromium in the alloys. The highest chromium content is inevitably obtained with 1.3 mass% nitrogen and a minimal molybdenum content from 2.0% by mass with 24.7% by mass. The window of the invention Alloys are hatched in Fig. 1.
  • Table 1 shows the dependency of those determined in the ASTM G-48 / A test critical pitting corrosion temperature from nitrogen, Chromium and molybdenum content of the alloys. Represent here Alloys 1 to 3 relate to the state of the art commercially introduced materials. Alloys 4 to 12 disclose to those known from patents and other publications State of the art, while the alloys 13 to 20 as are to be viewed according to the invention.
  • Fig. 2 the tensile strength is plotted against the degree of deformation for different alloys.
  • Alloys 17 and 19 according to the invention achieve tensile strengths of 2000 2000 N / mm 2 compared to the comparative alloys, as are required, for example, for anchors and setting bolts.
  • Exemplary for the behavior of the alloys according to the invention and the state of the art materials are in 3 shows the results of alloy 17 (alloy according to the invention) and alloy 11 (material according to the status of Technology).
  • the significantly higher corrosion resistance the alloy according to the invention can be seen from the with approx. 1 300 mV (GKE) compared to 200 mV (GKE) very much higher breakthrough potential.
  • the alloys according to the invention not only show an exceptional one high resistance in mineral acids, but draw very high mechanical strength after cold working.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Materials For Medical Uses (AREA)
  • Pressure Vessels And Lids Thereof (AREA)
  • Heat Treatment Of Steel (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)

Claims (5)

  1. Alliage de fer-manganèse-chrome austénitique, fondu ouvertement sous pression atmosphérique et formable à chaud et à froid, notamment pour l'utilisation dans des milieus aqueux,
    caractérisé par les composants d'alliage suivants (indiqués en % en poids) Cr 12,0 à 24,7 % Ni jusqu'à 0,10 % Mn 23,5 à 25,0 % Si jusqu'à 0,20 % Mo 2,0 à 5,7 % Ti jusqu'à 0,10 % C jusqu'à 0,015 % N 1,05 à 1,30 % Zr 0,01 à 0,15 % Cu 0,8 à 2,0 % B 0,002 à 0,005 %
    le reste étant du fer, des impuretés inévitables y compris.
  2. Alliage selon la revendication 1,
    caractérisé par les composants d'alliage suivants (indiqués en % en poids) Cr 19,0 à 21,0 % Ni jusqu'à 0,10 % Mn 23,5 à 25,0 % Si jusqu'à 0,20 % Mo 2,7 à 3,3 % Ti jusqu'à 0,10 % C jusqu'à 0,015 % N 1,05 à 1,30 % Zr 0,01 à 0,15 % Cu 0,8 à 0,9 % B 0,002 à 0,005 %
    le reste étant du fer, des impuretés inévitables y compris.
  3. Utilisation de l'alliage selon la revendication 1 ou 2 dans la technique médicale et dentaire, notamment pour la fabrication des intruments et des outils médicaux, des implants temporaires, tels que des clous d'ostéosynthèse intramédullaire, des vis et des plaques ainsi que des brackets, des fils de fixation et de tension.
  4. Utilisation de l'alliage selon la revendication 1 ou 2 dans la technique de fixation, notamment pour la fabrication des ancres et des chevilles à scellement par explosif.
  5. Utilisation selon la revendication 1 ou 2 dans des machines à combustion interne, notamment pour la fabrication des soupapes d'admission et d'émission.
EP98921467A 1997-04-22 1998-04-17 Alliage fer-manganese-chrome a resistance elevee, resistant a la corrosion Expired - Lifetime EP0977901B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19716795A DE19716795C2 (de) 1997-04-22 1997-04-22 Verwendung einer hochfesten und korrosionsbeständigen Eisen-Mangan-Chrom-Legierung
DE19716795 1997-04-22
PCT/EP1998/002299 WO1998048070A1 (fr) 1997-04-22 1998-04-17 Alliage fer-manganese-chrome a resistance elevee, resistant a la corrosion

Publications (2)

Publication Number Publication Date
EP0977901A1 EP0977901A1 (fr) 2000-02-09
EP0977901B1 true EP0977901B1 (fr) 2001-06-13

Family

ID=7827273

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98921467A Expired - Lifetime EP0977901B1 (fr) 1997-04-22 1998-04-17 Alliage fer-manganese-chrome a resistance elevee, resistant a la corrosion

Country Status (7)

Country Link
EP (1) EP0977901B1 (fr)
AT (1) ATE202158T1 (fr)
DE (1) DE19758613C2 (fr)
HU (1) HUP0001778A3 (fr)
NO (1) NO995133D0 (fr)
SK (1) SK145499A3 (fr)
WO (1) WO1998048070A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT407882B (de) 1999-07-15 2001-07-25 Schoeller Bleckmann Oilfield T Verfahren zur herstellung eines paramagnetischen, korrosionsbeständigen werkstoffes u.dgl. werkstoffe mit hoher dehngrenze, festigkeit und zähigkeit
AT412727B (de) * 2003-12-03 2005-06-27 Boehler Edelstahl Korrosionsbeständige, austenitische stahllegierung

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT152291B (de) * 1936-10-07 1938-01-25 Boehler & Co Ag Geb Chrom-Mangan-Stähle mit 0¨01 1¨5% Kohlenstoff, 5 25% Chrom, 10 35% Mangan.
DE917672C (de) * 1939-01-03 1954-09-09 Boehler & Co Ag Geb Herstellen von rostbestaendigen und unmagnetischen Blechen, Streifen oder Baendern fuer Flugzeugbespannungen
CH680267A4 (de) * 1967-05-13 1969-11-14 Straumann Inst Ag Bauelement mit einem von Null nur wenig abweichenden Temperaturkoeffizienten für ein Zeitmessgerät
US4121953A (en) * 1977-02-02 1978-10-24 Westinghouse Electric Corp. High strength, austenitic, non-magnetic alloy
CA1205659A (fr) * 1981-03-20 1986-06-10 Masao Yamamoto Bague de retenue en acier amagnetique a l'epreuve de la corrosion pour generatrices
DE3940438C1 (fr) * 1989-12-07 1991-05-23 Vereinigte Schmiedewerke Gmbh, 4630 Bochum, De
AT397968B (de) * 1992-07-07 1994-08-25 Boehler Ybbstalwerke Korrosionsbeständige legierung zur verwendung als werkstoff für in berührungskontakt mit lebewesen stehende teile
DE4242757C1 (de) * 1992-12-17 1994-03-24 Krupp Vdm Gmbh Verwendung einer korrosionsbeständigen Eisenbasislegierung für Gegenstände, die unter Hautkontakt am Körper getragen werden
DE19513407C1 (de) * 1995-04-08 1996-10-10 Vsg En & Schmiedetechnik Gmbh Verwendung einer austenitischen Stahllegierung für hautverträgliche Gegenstände

Also Published As

Publication number Publication date
WO1998048070A1 (fr) 1998-10-29
ATE202158T1 (de) 2001-06-15
HUP0001778A2 (hu) 2000-09-28
HUP0001778A3 (en) 2000-11-28
SK145499A3 (en) 2000-07-11
NO995133L (no) 1999-10-21
DE19758613C2 (de) 2000-12-07
NO995133D0 (no) 1999-10-21
EP0977901A1 (fr) 2000-02-09

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