US3112195A - Drill stems for deep-well drill rods from non-magnetizable austenitic manganese-chromium alloy steels - Google Patents

Drill stems for deep-well drill rods from non-magnetizable austenitic manganese-chromium alloy steels Download PDF

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Publication number
US3112195A
US3112195A US32594A US3259460A US3112195A US 3112195 A US3112195 A US 3112195A US 32594 A US32594 A US 32594A US 3259460 A US3259460 A US 3259460A US 3112195 A US3112195 A US 3112195A
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United States
Prior art keywords
drill
stems
magnetizable
deep
steels
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Expired - Lifetime
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US32594A
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English (en)
Inventor
Souresny Herbert
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Schoeller Bleckman Stahlwerke AG
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Schoeller Bleckman Stahlwerke AG
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Classifications

    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/02Ferrous alloys, e.g. steel alloys containing silicon
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/001Ferrous alloys, e.g. steel alloys containing N
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/18Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/22Ferrous alloys, e.g. steel alloys containing chromium with molybdenum or tungsten
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/18Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/38Ferrous alloys, e.g. steel alloys containing chromium with more than 1.5% by weight of manganese
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/18Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/44Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/18Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/58Ferrous alloys, e.g. steel alloys containing chromium with nickel with more than 1.5% by weight of manganese
    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21BEARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B17/00Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/16Drill collars
    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21BEARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B47/00Survey of boreholes or wells
    • E21B47/02Determining slope or direction
    • E21B47/022Determining slope or direction of the borehole, e.g. using geomagnetism
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S148/00Metal treatment
    • Y10S148/902Metal treatment having portions of differing metallurgical properties or characteristics
    • Y10S148/905Cutting tool

Definitions

  • drill stems are usually made from heattreated steel, mainly from molybdenum-chromium alloy steels as well as of nickel-chromium low alloy steels.
  • the drill stems being subjected during operation to high stresses, which may arise in various cases in a complex form, which cannot be foreseen, the quality of the manufacture regarding the selection of the material and regarding the processing is of high importance. For this reason, drill stems are continually subjected to checks during manufacture and it is highly decisive how the material which is used responds to all machining operations, mainly to being drilled.
  • Drill stems of these Monel-K alloys have proved entirely non-magnetic in use and have also the necessary mechanical characteristics, particularly a high yield point, and can be economically machined, particularly as regards the drilling of the drill stems.
  • austenitic alloys steels are also non-magnetizable and it has been known for a long time to improve the lower strength of such steels, particularly regarding the yield point, by cold working or bya precipitation hardening treatment, if desired, it has not been proposed before to use such austenitic steels for drill stems.
  • the previous failure to consider austenitic alloy steels as materials for making drill stems appears to be mainly due to the fact that it has not been possible before to provide steel compositions which in addition to being reliably non-magnetizable and having a high strength have also the essential machinability and, particularly, can be economically machined by drilling to form the hole in drill stems of considerable length after cold working.
  • the invention provides a method of manufacturing drill stems for deep-well drill rods from non-magnetizable austenitic manganese-chromium steels, in which manganese-chromium steels containing up to 0.35% carbon, up to about 1% silicon, 12-25% manganese, 1020% chromium, up to about 5% nickel, up to about 1% molybdenum and 0.0-50.50% nitrogen, balance iron with the usual accompanying elements, are cold-worked to raise the yield point to kg./ sq. mm. and higher at least adjacent to the ends.
  • These steels may desirably have the additions usual in such alloy steels, such as up to 1.5% tungsten, up to 1% titanium, up to 2% columbiumand/or tantalum, up to 0.5% boron, up to 1.5% vanadium, up to 3% copper and up to 5% cobalt, individually or jointly, in a total amount not exceeding 10%.
  • steels containing up to 0.12% carbon, up to 0.60% silicon, 17-19% manganese, 11.50-l3% chromium, 1.52% nickel, GAO-0.60% molybdenum, 0.100.15% nitrogen, balance iron with the usual accompanying elements, have proved particularly suitable.
  • the austenitic steels proposed according to the invention it has surprisingly been found that they can be machined, particularly by drilling to form the hole, in spite of their relatively high strength with the dimensional accuracy required particularly for drill stems and that the bores of the drill stems having lengths up to about 10 metres are entirely satisfactory. It is known that the drilling of the drill stems involves great difii culties and that a high precision of the machine tools is required. Deviations of the bore from the center of the stem may result in dangerous reductions in wall thickness and must be absolutely avoided. This aspect is of essential significance in the evaluation of the machinability (drillability).
  • the strength values of the nonmagnetic alloy steels proposed according to the invention as material for drill stems are virtually similar to those of the usual heat-treated magnetic molybdenum-chromium steels when the same are used after being normalized throughout their length and with heat-treated ends.
  • a dr-ill stem of nonmagnetic steel alloy for a deep-well drill pipe comprising an alloy steel consisting essentially of 0.01 to 0.25% by weight carbon, 0.10 to 1.00% by weight silicon, 12.00 to 25.00% by weight manganese, 10.00 to 20.00% by weight chromium, 0.05 to 0.50% by weight nitrogen, up to 5.00% by weight nickel, and up to 1.00% by weight molybdenum, the balance being es- 4 sentially iron; said alloy steel being cold worked at least along a portion of the drill stem to a yield point of about 70 kg./mm.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geophysics (AREA)
  • Earth Drilling (AREA)
  • Drilling Tools (AREA)
US32594A 1959-06-04 1960-05-31 Drill stems for deep-well drill rods from non-magnetizable austenitic manganese-chromium alloy steels Expired - Lifetime US3112195A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT418659A AT214466B (de) 1959-06-04 1959-06-04 Stahllegierungen zur Herstellung von Schwerstangen für Tiefbohrgestänge

Publications (1)

Publication Number Publication Date
US3112195A true US3112195A (en) 1963-11-26

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US32594A Expired - Lifetime US3112195A (en) 1959-06-04 1960-05-31 Drill stems for deep-well drill rods from non-magnetizable austenitic manganese-chromium alloy steels

Country Status (6)

Country Link
US (1) US3112195A (is)
AT (1) AT214466B (is)
DE (1) DE1261677B (is)
FR (1) FR1259186A (is)
GB (1) GB902440A (is)
NL (1) NL111900C (is)

Cited By (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3659882A (en) * 1968-12-02 1972-05-02 Schoeller Bleckman Stahlwerke Nonmagnetic corrosion-resistant drill string members
US3753693A (en) * 1971-05-06 1973-08-21 Armco Steel Corp Chromium-nickel-manganese-nitrogen austenitic stainless steel
US3839022A (en) * 1971-01-28 1974-10-01 Dunford Hadfields Ltd Hot work tools and alloys therefor
US3854938A (en) * 1971-04-27 1974-12-17 Allegheny Ludlum Ind Inc Austenitic stainless steel
US3861908A (en) * 1973-08-20 1975-01-21 Crucible Inc Duplex stainless steel
US3880654A (en) * 1973-11-28 1975-04-29 Allegheny Ludlum Ind Inc Corrosion resistant austenitic steel
US3900316A (en) * 1972-08-01 1975-08-19 Int Nickel Co Castable nickel-chromium stainless steel
US3904401A (en) * 1974-03-21 1975-09-09 Carpenter Technology Corp Corrosion resistant austenitic stainless steel
US3907551A (en) * 1973-04-30 1975-09-23 Allegheny Ludlum Ind Inc Corrosion resistant austenitic steel
US3938990A (en) * 1973-11-28 1976-02-17 Allegheny Ludlum Industries, Inc. Method of making corrosion resistant austenitic steel
US4017711A (en) * 1972-09-25 1977-04-12 Nippon Steel Corporation Welding material for low temperature steels
US4028098A (en) * 1973-03-06 1977-06-07 Mannesmann Aktiengesellschaft Cryogenic steel
US4337088A (en) * 1980-05-12 1982-06-29 Moses Jr Edward L Non-magnetic stabilizer
US4481033A (en) * 1981-04-03 1984-11-06 Kabushiki Kaisha Kobe Seiko Sho High Mn-Cr non-magnetic steel
US4502886A (en) * 1983-01-06 1985-03-05 Armco Inc. Austenitic stainless steel and drill collar
US4514236A (en) * 1982-03-02 1985-04-30 British Steel Corporation Method of manufacturing an article of non-magnetic austenitic alloy steel for a drill collar
US4554028A (en) * 1983-12-13 1985-11-19 Carpenter Technology Corporation Large warm worked, alloy article
US4818484A (en) * 1983-12-13 1989-04-04 Carpenter Technology Corporation Austenitic, non-magnetic, stainless steel alloy
US4822556A (en) * 1987-02-26 1989-04-18 Baltimore Specialty Steels Corporation Austenitic stainless steel combining strength and resistance to intergranular corrosion
US4983128A (en) * 1989-08-28 1991-01-08 Amp Incorporated Bus bar for making electrical taps
US5328529A (en) * 1993-03-25 1994-07-12 Armco Inc. High strength austenitic stainless steel having excellent galling resistance
EP1025948A2 (de) * 1999-02-01 2000-08-09 Castolin S.A. Schweisswerkstoff und seine Verwendung
FR2832426A1 (fr) * 2001-11-21 2003-05-23 Japan Atomic Energy Res Inst ACIER NON MAGNETIQUE A HAUTE TENEUR EN Mn POUR UN ELEMENT DE STRUCTURE D'AIMANT SUPRACONDUCTEUR
US20080000554A1 (en) * 2006-06-23 2008-01-03 Jorgensen Forge Corporation Austenitic paramagnetic corrosion resistant material
US20080274007A1 (en) * 2007-05-06 2008-11-06 Daido Tokushuko Kabushiki Kaisha High-strength nonmagnetic stainless steel, and high-strength nonmagnetic stainless steel part and process for producing the same
US20090060775A1 (en) * 2007-08-29 2009-03-05 Advanced International Multitech Co., Ltd. Cr-Mn-N austenitic stainless steel
US20090202187A1 (en) * 2008-02-08 2009-08-13 Ernst Strian Non-magnetizable rolling bearing component of an austenitic material and method of making such a rolling bearing component
US20100189589A1 (en) * 2007-08-29 2010-07-29 Advanced International Multitech Co., Ltd Sports gear apparatus made from cr-mn-n austenitic stainless steel
CN101942612A (zh) * 2010-08-09 2011-01-12 振石集团东方特钢股份有限公司 一种具有良好耐腐蚀性能的节镍奥氏体不锈钢
TWI382096B (is) * 2008-07-11 2013-01-11
US20170121797A1 (en) * 2014-03-28 2017-05-04 Outokumpu Oyj Austenitic stainless steel

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE757633A (fr) * 1969-10-23 1971-04-01 Armco Steel Corp Acier inoxydable austénitique
JPS5331811B2 (is) * 1971-08-18 1978-09-05
JPS5128252B2 (is) * 1972-05-24 1976-08-18
FR2236957A1 (en) * 1973-07-03 1975-02-07 Armco Steel Corp Austenitic stainless steel - with very low work hardening rate and excellent weldability
IT1108126B (it) * 1977-11-30 1985-12-02 Fischer Ag Georg Lega per getti di acciaio austenitica non magentizzabile
JPS5681656A (en) * 1979-12-10 1981-07-03 Japan Steel Works Ltd:The Nonmagnetic steel for cryogenic temperature high magnetic field apparatus
AT364592B (de) * 1980-01-25 1981-10-27 Ver Edelstahlwerke Ag Verfahren zur herstellung von spannungsrisskorrosionsbestaendigen, nichtmagnetisierbaren schwerstangen aus austenitischen staehlen und vorrichtung zur durchfuehrung des verfahrens
DE3176034D1 (en) * 1980-06-17 1987-04-30 Toshiba Kk A high cavitation erosion resistance stainless steel and hydraulic machines being made of the same
CA1205659A (en) * 1981-03-20 1986-06-10 Masao Yamamoto Corrosion-resistant non-magnetic steel and retaining ring for a generator made of it
JPS57155350A (en) * 1981-03-20 1982-09-25 Toshiba Corp Corrosion resistant nonmagnetic steel
FR2509365A1 (fr) * 1981-07-10 1983-01-14 Creusot Loire Masses-tiges amagnetiques en aciers austenitiques a durcissement structural
JPS58167724A (ja) * 1982-03-26 1983-10-04 Kobe Steel Ltd 石油掘削スタビライザ−用素材の製造方法
US4450008A (en) * 1982-12-14 1984-05-22 Earle M. Jorgensen Co. Stainless steel
JPS61130464A (ja) * 1984-11-30 1986-06-18 Nippon Steel Corp 高耐食性高強度ドリルカラ−用非磁性鋼
AT381658B (de) * 1985-06-25 1986-11-10 Ver Edelstahlwerke Ag Verfahren zur herstellung von amagnetischen bohrstrangteilen
FR2610008A1 (fr) * 1987-01-23 1988-07-29 Smf Int Acier amagnetique au manganese et au chrome et element tubulaire d'une colonne de forage realise en cet acier
FR2672904B1 (fr) * 1991-02-14 1993-05-07 Aubert & Duval Acieries Acier inoxydable amagnetique a base manganese-chrome resistant a la corrosion sous contrainte, procede de fabrication d'une barre en acier amagnetique de grande longueur.
FR2744379A1 (fr) * 1996-02-07 1997-08-08 Smf Int Procede de traitement mecanique d'un produit de forme allongee en acier austenitique amagnetique et en particulier d'une masse-tige pour forage petrolier

Citations (6)

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US2280686A (en) * 1938-04-06 1942-04-21 Thompson Prod Inc Method of making engine poppet valves
US2334870A (en) * 1942-02-04 1943-11-23 Electro Metallurg Co Austenitic chromium-nickel and/or manganese steels
US2657130A (en) * 1952-12-31 1953-10-27 Armco Steel Corp High-temperature steel and articles
US2789049A (en) * 1954-11-03 1957-04-16 Mckay Co High strength welding steel
US2820725A (en) * 1955-06-21 1958-01-21 Eutectic Welding Alloys Welding alloys and fluxes
US2891858A (en) * 1955-09-28 1959-06-23 Carpenter Steel Co Single phase austenitic alloy steel

Family Cites Families (1)

* 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.

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2280686A (en) * 1938-04-06 1942-04-21 Thompson Prod Inc Method of making engine poppet valves
US2334870A (en) * 1942-02-04 1943-11-23 Electro Metallurg Co Austenitic chromium-nickel and/or manganese steels
US2657130A (en) * 1952-12-31 1953-10-27 Armco Steel Corp High-temperature steel and articles
US2789049A (en) * 1954-11-03 1957-04-16 Mckay Co High strength welding steel
US2820725A (en) * 1955-06-21 1958-01-21 Eutectic Welding Alloys Welding alloys and fluxes
US2891858A (en) * 1955-09-28 1959-06-23 Carpenter Steel Co Single phase austenitic alloy steel

Cited By (35)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3659882A (en) * 1968-12-02 1972-05-02 Schoeller Bleckman Stahlwerke Nonmagnetic corrosion-resistant drill string members
US3839022A (en) * 1971-01-28 1974-10-01 Dunford Hadfields Ltd Hot work tools and alloys therefor
US3854938A (en) * 1971-04-27 1974-12-17 Allegheny Ludlum Ind Inc Austenitic stainless steel
US3753693A (en) * 1971-05-06 1973-08-21 Armco Steel Corp Chromium-nickel-manganese-nitrogen austenitic stainless steel
US3900316A (en) * 1972-08-01 1975-08-19 Int Nickel Co Castable nickel-chromium stainless steel
US4017711A (en) * 1972-09-25 1977-04-12 Nippon Steel Corporation Welding material for low temperature steels
US4028098A (en) * 1973-03-06 1977-06-07 Mannesmann Aktiengesellschaft Cryogenic steel
US3907551A (en) * 1973-04-30 1975-09-23 Allegheny Ludlum Ind Inc Corrosion resistant austenitic steel
US3861908A (en) * 1973-08-20 1975-01-21 Crucible Inc Duplex stainless steel
US3938990A (en) * 1973-11-28 1976-02-17 Allegheny Ludlum Industries, Inc. Method of making corrosion resistant austenitic steel
US3880654A (en) * 1973-11-28 1975-04-29 Allegheny Ludlum Ind Inc Corrosion resistant austenitic steel
US3904401A (en) * 1974-03-21 1975-09-09 Carpenter Technology Corp Corrosion resistant austenitic stainless steel
US4337088A (en) * 1980-05-12 1982-06-29 Moses Jr Edward L Non-magnetic stabilizer
US4481033A (en) * 1981-04-03 1984-11-06 Kabushiki Kaisha Kobe Seiko Sho High Mn-Cr non-magnetic steel
US4514236A (en) * 1982-03-02 1985-04-30 British Steel Corporation Method of manufacturing an article of non-magnetic austenitic alloy steel for a drill collar
US4502886A (en) * 1983-01-06 1985-03-05 Armco Inc. Austenitic stainless steel and drill collar
US4554028A (en) * 1983-12-13 1985-11-19 Carpenter Technology Corporation Large warm worked, alloy article
US4818484A (en) * 1983-12-13 1989-04-04 Carpenter Technology Corporation Austenitic, non-magnetic, stainless steel alloy
US4822556A (en) * 1987-02-26 1989-04-18 Baltimore Specialty Steels Corporation Austenitic stainless steel combining strength and resistance to intergranular corrosion
US4983128A (en) * 1989-08-28 1991-01-08 Amp Incorporated Bus bar for making electrical taps
US5328529A (en) * 1993-03-25 1994-07-12 Armco Inc. High strength austenitic stainless steel having excellent galling resistance
EP1025948A2 (de) * 1999-02-01 2000-08-09 Castolin S.A. Schweisswerkstoff und seine Verwendung
EP1025948A3 (de) * 1999-02-01 2002-01-23 Castolin S.A. Schweisswerkstoff und seine Verwendung
FR2832426A1 (fr) * 2001-11-21 2003-05-23 Japan Atomic Energy Res Inst ACIER NON MAGNETIQUE A HAUTE TENEUR EN Mn POUR UN ELEMENT DE STRUCTURE D'AIMANT SUPRACONDUCTEUR
US20080000554A1 (en) * 2006-06-23 2008-01-03 Jorgensen Forge Corporation Austenitic paramagnetic corrosion resistant material
US20080274007A1 (en) * 2007-05-06 2008-11-06 Daido Tokushuko Kabushiki Kaisha High-strength nonmagnetic stainless steel, and high-strength nonmagnetic stainless steel part and process for producing the same
EP1990439A3 (en) * 2007-05-06 2011-09-14 Daido Tokushuko Kabushiki Kaisha High-strength nonmagnetic stainless steel, and high-strength nonmagnetic stainless steel part and process for producing the same
US8900511B2 (en) 2007-05-06 2014-12-02 Daido Tokushuko Kabushiki Kaisha High-strength nonmagnetic stainless steel, and high-strength nonmagnetic stainless steel part and process for producing the same
US20090060775A1 (en) * 2007-08-29 2009-03-05 Advanced International Multitech Co., Ltd. Cr-Mn-N austenitic stainless steel
US20100189589A1 (en) * 2007-08-29 2010-07-29 Advanced International Multitech Co., Ltd Sports gear apparatus made from cr-mn-n austenitic stainless steel
US20090202187A1 (en) * 2008-02-08 2009-08-13 Ernst Strian Non-magnetizable rolling bearing component of an austenitic material and method of making such a rolling bearing component
US8950947B2 (en) * 2008-02-08 2015-02-10 Schaeffler Technologies Gmbh & Co. Kg Non-magnetizable rolling bearing component of an austenitic material and method of making such a rolling bearing component
TWI382096B (is) * 2008-07-11 2013-01-11
CN101942612A (zh) * 2010-08-09 2011-01-12 振石集团东方特钢股份有限公司 一种具有良好耐腐蚀性能的节镍奥氏体不锈钢
US20170121797A1 (en) * 2014-03-28 2017-05-04 Outokumpu Oyj Austenitic stainless steel

Also Published As

Publication number Publication date
AT214466B (de) 1961-04-10
NL111900C (is) 1965-10-15
DE1261677B (de) 1968-02-22
GB902440A (en) 1962-08-01
FR1259186A (fr) 1961-04-21

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