EP0914485B1 - Alliage austenitique d'acier au nickel-chrome - Google Patents

Alliage austenitique d'acier au nickel-chrome Download PDF

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Publication number
EP0914485B1
EP0914485B1 EP97937513A EP97937513A EP0914485B1 EP 0914485 B1 EP0914485 B1 EP 0914485B1 EP 97937513 A EP97937513 A EP 97937513A EP 97937513 A EP97937513 A EP 97937513A EP 0914485 B1 EP0914485 B1 EP 0914485B1
Authority
EP
European Patent Office
Prior art keywords
hafnium
zirconium
tantalum
nickel
chromium
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
EP97937513A
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German (de)
English (en)
Other versions
EP0914485A1 (fr
Inventor
Willi Kleemann
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.)
Schmidt and Clemens GmbH and Co KG
Original Assignee
Schmidt and Clemens GmbH and Co
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Filing date
Publication date
Application filed by Schmidt and Clemens GmbH and Co filed Critical Schmidt and Clemens GmbH and Co
Publication of EP0914485A1 publication Critical patent/EP0914485A1/fr
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Publication of EP0914485B1 publication Critical patent/EP0914485B1/fr
Anticipated expiration legal-status Critical
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    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C30/00—Alloys containing less than 50% by weight of each constituent

Definitions

  • the invention relates to a heat-resistant, creep-resistant austenitic nickel-chrome steel alloy, as used in the petrochemical industry comes.
  • Such alloys require high strength, in particular creep rupture strength and sufficient Toughness at normal operating temperatures as well adequate corrosion resistance.
  • U.S. Patent 4,077,801 is a molybdenum cobalt-free austenitic nickel-chromium cast steel alloy with 0.25 to 0.8% carbon, up to 3.5% silicon, up to 3.0% manganese, 8 to 62% nickel, 12 to 32% Chromium, up to 2% niobium, 0.05 to below 1.0% titanium, 0.05 to 2% tungsten and up to 0.3% nitrogen, the rest iron with a high creep rupture strength and ductility at high Known temperatures.
  • This cast alloy has one good weldability and is suitable as a material for Hydrogen reforming devices.
  • An austenitic one is known from US Pat. No. 5,310,522 Nickel-chromium alloy for petrochemical uses with 0.05 to 0.3% carbon, 0.2 to 1.3% silicon, 0.2 to 1.5% manganese, 30 to 35% nickel, 22 to 25% chromium, 0.2 to 0.6% niobium, 0.1 to 0.6% titanium, 4 to 6.5% molybdenum, 0.35 to 1.75% cobalt, 0.2 to 1.5% tungsten, balance iron and unavoidable impurities.
  • the invention is therefore based on the problem of a nickel-chromium steel alloy propose the higher operating temperatures as well has grown and has sufficient creep resistance as well as carburizing and Has oxidation resistance.
  • the invention consists of an austenitic steel alloy with 0.3 up to 1.0% carbon, 0.2 to 2.5% silicon, up to 0.8% manganese, 30.0 to 48.0% Nickel, 16.0 to 22.0% chromium, 0.5 to 18.0% cobalt, 1.5 to 4% molybdenum, 0.2 to 0.6% niobium, 0.1 to 0.5% titanium, 0.1 to 0.6% zirconium, 0.1 to 1.5% tantalum and 0.1 to 1.5% hafnium, with a ratio of tantalum and hafnium contents the zirconium content of at least 1.2%, the total content of tantalum, Hafnium and zirconium is 1.2 to 3%.
  • the Steel alloy contains more than 20% iron at cobalt contents of at least 10% and with cobalt contents below 10% over 30% iron and optionally 1.5 to 2.5% Aluminum.
  • Molybdenum improves the creep rupture strength at medium temperatures, while intermetallic carbide phases give the weak iron-nickel-chromium structure a high strength at temperatures above 0.9 of its absolute melting point.
  • Hafnium, zirconium, titanium, tantalum and niobium form primary carbides of the type MC, while chromium, including the molybdenum, forms carbides of the types M 7 C 3 and M 23 C 6 in the intra- and interdentritic areas.
  • compositions of the test alloys result from Table I below, the three conventional ones Alloys 1, 2 and 3, Comparative Alloys 4 and 6 to 12 and alloys 5 and 13 according to the invention to 17 reproduces.
  • the rest of the alloy consisted of all Iron cases.
  • the alloys were in the medium frequency furnace melted and in investment molds or in Pour centrifugal casting.
  • the samples for the creep test were either made out the final investment casting samples or by processing the centrifugally cast pipes. Under use the creep behavior was measured according to these samples ASTM E 139 determined in the as-cast state; the results of Try at 1100 ° C and two different loads are summarized in Table II below.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Heat Treatment Of Steel (AREA)
  • Heat Treatment Of Articles (AREA)
  • Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)

Claims (6)

  1. Alliage austénitique nickel - chrome - acier résistant aux températures élevées et résistant au fluage à températures supérieures présentant une résistance au fluage sous contrainte et une résistance à la carburation élevées, composé de 0,3 à 1,0 % de carbone 0,2 à 2,5 % de silicium jusqu'à 0,8 % de manganèse 30,0 à 48,0 % de nickel 16,0 à 22 % de chrome 0,5 à 18,0 % de cobalt 1,5 à 4 % de molybdène 0,2 à 0,6 % de niobium 0,1 à 0,5% de titane 0,1 à 0,6 % de zirconium 0,1 à 1,5% de tantale 0,1 à 1,5% d'hafnium
    le reste à plus de 20 % de fer pour une teneur en cobalt au moins égale à 10 %, ou à plus de 30 % de fer pour une teneur en cobalt inférieure à 10 %, avec un rapport entre teneur totale en tantale et hafnium et teneur en zirconium au moins égal à 1,2, avec une teneur totale en tantale, hafnium et zirconium comprise entre 1,2 et 3,0 %, ainsi que facultativement 1,5 à 2,5 % d'aluminium.
  2. Alliage selon la revendication 1, comportant 0,42 % de carbone, 1,3 % de silicium, 0,40 % de manganèse, 34,0 % de nickel, 19,0 % de chrome, 3,5 % de molybdène, 0,40 % de niobium, 0,25 % de titane, 0,30 % de zirconium, 0,15 % de tantale et 0,80 % d'hafnium, le reste de fer.
  3. Alliage selon l'une des revendications 1 ou 2, comportant 0,44 % de carbone, 1,2 % de silicium, 0,40 % de manganèse, 33,0 % de nickel, 19,0 % de chrome, 3,0 % de molybdène, 0,40 % de niobium, 0,20 % de titane, 0,15 % de zirconium, 1,00 % de tantale et 0,15 % d'hafnium, le reste de fer.
  4. Alliage selon l'une des revendications 1 à 3, dans lequel le rapport de masse entre teneur totale en tantale et hafnium et teneur en zirconium est compris entre 2,5 et 14.
  5. Utilisation d'un alliage selon l'une des revendications 1 à 4 en tant que matériau pour fabriquer des objets présentant une haute résistance au fluage sous contrainte à des températures élevées, ainsi qu'une grande résistance à la carburation et à l'oxydation.
  6. Utilisation d'un alliage selon l'une des revendications 1 à 4 en tant que matériau pour fabriquer des tuyaux et raccords d'installations de craquage à des fins de préparation d'éthylène ou de gaz de synthèse.
EP97937513A 1996-07-25 1997-07-23 Alliage austenitique d'acier au nickel-chrome Expired - Lifetime EP0914485B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19629977 1996-07-25
DE19629977A DE19629977C2 (de) 1996-07-25 1996-07-25 Werkstück aus einer austenitischen Nickel-Chrom-Stahllegierung
PCT/EP1997/003975 WO1998004757A1 (fr) 1996-07-25 1997-07-23 Alliage austenitique d'acier au nickel-chrome

Publications (2)

Publication Number Publication Date
EP0914485A1 EP0914485A1 (fr) 1999-05-12
EP0914485B1 true EP0914485B1 (fr) 2002-05-08

Family

ID=7800771

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97937513A Expired - Lifetime EP0914485B1 (fr) 1996-07-25 1997-07-23 Alliage austenitique d'acier au nickel-chrome

Country Status (6)

Country Link
US (1) US6409847B2 (fr)
EP (1) EP0914485B1 (fr)
JP (1) JP3710097B2 (fr)
CA (1) CA2261736C (fr)
DE (2) DE19629977C2 (fr)
WO (1) WO1998004757A1 (fr)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040156737A1 (en) * 2003-02-06 2004-08-12 Rakowski James M. Austenitic stainless steels including molybdenum
US20050131263A1 (en) * 2002-07-25 2005-06-16 Schmidt + Clemens Gmbh + Co. Kg, Process and finned tube for the thermal cracking of hydrocarbons
DE10233961A1 (de) * 2002-07-25 2004-02-12 Schmidt + Clemens Gmbh + Co. Edelstahlwerk Kaiserau Verfahren zum thermischen Spalten von Kohlenwasserstoffen
GB2394959A (en) * 2002-11-04 2004-05-12 Doncasters Ltd Hafnium particle dispersion hardened nickel-chromium-iron alloys
WO2004042100A2 (fr) * 2002-11-04 2004-05-21 Doncasters Limited Alliages haute temperature
US7482502B2 (en) * 2003-01-24 2009-01-27 Stone & Webster Process Technology, Inc. Process for cracking hydrocarbons using improved furnace reactor tubes
SE527319C2 (sv) * 2003-10-02 2006-02-07 Sandvik Intellectual Property Legering för högtemperaturanvändning
US7985304B2 (en) 2007-04-19 2011-07-26 Ati Properties, Inc. Nickel-base alloys and articles made therefrom
CN101592186B (zh) * 2009-07-10 2011-01-26 攀钢集团钢铁钒钛股份有限公司 轴瓦轴套
CN101592187B (zh) * 2009-07-10 2011-04-13 攀钢集团钢铁钒钛股份有限公司 轴瓦和轴套
US9011620B2 (en) * 2009-09-11 2015-04-21 Technip Process Technology, Inc. Double transition joint for the joining of ceramics to metals
UA111115C2 (uk) 2012-04-02 2016-03-25 Ейкей Стіл Пропертіс, Інк. Рентабельна феритна нержавіюча сталь
US10351784B2 (en) 2014-12-16 2019-07-16 Exxonmobil Chemical Patents Inc. Pyrolysis furnace tubes
WO2016099738A1 (fr) 2014-12-16 2016-06-23 Exxonmobil Research And Engineering Company Tubes de traitement de raffinerie de formation d'alumine avec élément de mélange
US9909395B2 (en) 2015-09-21 2018-03-06 National Oilwell DHT, L.P. Wellsite hardfacing with distributed hard phase and method of using same

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GB618560A (en) * 1945-11-02 1949-02-23 Kanthal Ab Heat resistant machinable alloy with high strength while hot
US3135602A (en) * 1957-02-11 1964-06-02 Babcock & Wilcox Co 45% iron base austenitic cr-ni alloy with 18-22% cr, 27-32% ni or (ni+co) plus strengthening additions
JPS58207352A (ja) * 1982-05-28 1983-12-02 Mitsubishi Metal Corp ガイドシユ−用Ｎｉ基鋳造合金
DE1233609B (de) * 1961-01-24 1967-02-02 Rolls Royce Verfahren zur Waermebehandlung einer aushaertbaren Nickel-Chrom-Legierung
US3658516A (en) * 1969-09-05 1972-04-25 Hitachi Ltd Austenitic cast steel of high strength and excellent ductility at high temperatures
US3713788A (en) * 1970-10-21 1973-01-30 Chromalloy American Corp Powder metallurgy sintered corrosion and heat-resistant, age hardenable nickel-chromium refractory carbide alloy
US4077801A (en) 1977-05-04 1978-03-07 Abex Corporation Iron-chromium-nickel heat resistant castings
US4764225A (en) * 1979-05-29 1988-08-16 Howmet Corporation Alloys for high temperature applications
US4313760A (en) 1979-05-29 1982-02-02 Howmet Turbine Components Corporation Superalloy coating composition
US4302256A (en) * 1979-11-16 1981-11-24 Chromalloy American Corporation Method of improving mechanical properties of alloy parts
JPS5820732A (ja) 1981-07-24 1983-02-07 Comput Basic Mach Technol Res Assoc 酸化物磁性薄膜の製造方法
EP0246092A3 (fr) * 1986-05-15 1989-05-03 Exxon Research And Engineering Company Alliages résistant à la fissuration par corrosion sous tension
JPS63297542A (ja) * 1987-05-28 1988-12-05 Nissan Motor Co Ltd 耐熱・耐摩耗性鉄基焼結合金
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JPH04116142A (ja) * 1990-09-06 1992-04-16 Res Inst Electric Magnetic Alloys 高剛性率低透磁率非磁性機能合金およびその製造方法
JP2574528B2 (ja) * 1990-09-06 1997-01-22 財団法人電気磁気材料研究所 高硬度低透磁率非磁性機能合金およびその製造方法
US5310522A (en) * 1992-12-07 1994-05-10 Carondelet Foundry Company Heat and corrosion resistant iron-nickel-chromium alloy

Also Published As

Publication number Publication date
DE19629977C2 (de) 2002-09-19
CA2261736A1 (fr) 1998-02-05
WO1998004757A1 (fr) 1998-02-05
CA2261736C (fr) 2005-06-14
US6409847B2 (en) 2002-06-25
DE19629977A1 (de) 1998-01-29
US20010001399A1 (en) 2001-05-24
EP0914485A1 (fr) 1999-05-12
DE59707227D1 (de) 2002-06-13
JP3710097B2 (ja) 2005-10-26
JP2000513767A (ja) 2000-10-17

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