FI3822384T3 - Austenitic stainless steel having improved strength - Google Patents

Austenitic stainless steel having improved strength Download PDF

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Publication number
FI3822384T3
FI3822384T3 FIEP19849274.6T FI19849274T FI3822384T3 FI 3822384 T3 FI3822384 T3 FI 3822384T3 FI 19849274 T FI19849274 T FI 19849274T FI 3822384 T3 FI3822384 T3 FI 3822384T3
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FI
Finland
Prior art keywords
stainless steel
austenitic stainless
steel according
equation
following equation
Prior art date
Application number
FIEP19849274.6T
Other languages
Finnish (fi)
Swedish (sv)
Inventor
Jae-Hwa Lee
Gyu Jin Jo
Young Tae Kim
Original Assignee
Posco Holdings Inc
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
Application filed by Posco Holdings Inc filed Critical Posco Holdings Inc
Application granted granted Critical
Publication of FI3822384T3 publication Critical patent/FI3822384T3/en

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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
    • C22C38/40—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
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/26—Methods of annealing
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D6/00—Heat treatment of ferrous alloys
    • C21D6/004—Heat treatment of ferrous alloys containing Cr and Ni
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0205—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips of ferrous alloys
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0247—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment
    • C21D8/0263—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment following hot rolling
    • 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
    • C22C38/001—Ferrous alloys, e.g. steel alloys containing N
    • 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
    • C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
    • 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
    • C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
    • 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
    • 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
    • C22C38/54—Ferrous alloys, e.g. steel alloys containing chromium with nickel with boron
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D2211/00—Microstructure comprising significant phases
    • C21D2211/001—Austenite

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Heat Treatment Of Sheet Steel (AREA)
  • Heat Treatment Of Steel (AREA)
  • Materials For Medical Uses (AREA)

Claims (7)

PatenttivaatimuksetPatent Claims 1. Parannetun lujuuden omaava austeniittinen ruostumaton teräs, joka käsittää pro- sentteina (%) koko koostumuksen painon perusteella, C: 0,02-0,14 %, Si: 0,2-0,6 C%,S: alle 0,01 %, Mn: 2,0-4,5 %, Ni: 2,5-5,0 %, Cr: 19,0-22,0 %, Cu: 1,0-3,0 %, Mo: alle 1,0 %, N: 0,25—-0,40 %, valinnaisesti B: 0,001-0,005 % ja Ca: 0,001- 0,003 %, loput rautaa (Fe) ja väistämättömiä epäpuhtauksia, ja jossa typen liukoisuus nesteeseen (eng. Solubility of Nitrogen in Liguid, SNL) -arvo, jota edustaa seuraava yhtälö (1), on yhtä suuri tai suurempi kuin N-pitoisuus. Yhtälö (1): SNL= -0,188- 0,0423xC -0,0517*Si+ 0,012xMn +0,0048Ni + 0,0252xCr -0,00906xCu +0,00021xMo (Tassa C, Si, Mn, Ni, Cr, Cu ja Mo tarkoittavat kunkin alkuaineen pitoisuutta (paino-1. An austenitic stainless steel with improved strength, comprising in percent (%) by weight of the whole composition, C: 0.02-0.14%, Si: 0.2-0.6 C%,S: less than 0, 01%, Mn: 2.0-4.5%, Ni: 2.5-5.0%, Cr: 19.0-22.0%, Cu: 1.0-3.0%, Mo: below 1.0%, N: 0.25--0.40%, optionally B: 0.001-0.005% and Ca: 0.001-0.003%, the rest iron (Fe) and inevitable impurities, and where the solubility of nitrogen in liquid (eng. Solubility of Nitrogen in Liguid, SNL) represented by the following equation (1) is equal to or greater than the N content. Equation (1): SNL= -0.188- 0.0423xC -0.0517*Si+ 0.012xMn +0.0048Ni + 0.0252xCr -0.00906xCu +0.00021xMo (In C, Si, Mn, Ni, Cr, Cu and Mo mean the concentration of each element (weight %).)%).) 2. Patenttivaatimuksen 1 mukainen austeniittinen ruostumaton teräs, jossa C+N on 0,5 % tai vähemmän (pois lukien 0).2. The austenitic stainless steel according to claim 1, wherein C+N is 0.5% or less (excluding 0). 3. Patenttivaatimuksen 1 mukainen austeniittinen ruostumaton teräs, jossa Md3o- arvo, jota edustaa seuraava yhtälö (2), toteuttaa -50 tai vähemmän. Yhtälö (2): Md3ao = 551 -462<(C +N) -9,2*Si -8,1xMn -13,7*Cr -29(Ni +Cu)-8,5*Mo (Tässä C, N, Si, Mn, Cr, Ni, Cu ja Mo tarkoittavat kunkin alkuaineen pitoisuutta (pai- no-%).)3. The austenitic stainless steel according to claim 1, wherein the Md 3 o value represented by the following equation (2) realizes -50 or less. Equation (2): Md3ao = 551 -462<(C +N) -9.2*Si -8.1xMn -13.7*Cr -29(Ni +Cu)-8.5*Mo (Here C, N , Si, Mn, Cr, Ni, Cu and Mo mean the concentration of each element (% by weight.) 4. Patenttivaatimuksen 1 mukainen austeniittinen ruostumaton teräs, jossa auste- — niittinen ruostumaton teräs toteuttaa seuraavan yhtälön (3). Yhtälö (3): Creg/Nieg < 1,84. The austenitic stainless steel according to claim 1, where the austenitic stainless steel fulfills the following equation (3). Equation (3): Creg/Nieg < 1.8 (Tässä Creg = Cr +Mo +1,5 x Si, Nieg = Ni +0,5 x Mn +30 x (C +N) +0,5 x(Here Creg = Cr +Mo +1.5 x Si, Nieg = Ni +0.5 x Mn +30 x (C +N) +0.5 x Cu.)Cu.) 5. Patenttivaatimuksen 1 mukainen austeniittinen ruostumaton teräs, jossa piste- — resistenssin ekvivalenttiluku (eng. Pitting Resistance Equivalent Number, PREN), jota edustaa seuraava yhtälö (4), toteuttaa 22 tai enemmän. Yhtälö (4): PREN = 16 +3,3Mo +16N -0,5Mn (Tässä Mo, N ja Mn tarkoittavat kunkin alkuaineen pitoisuutta (paino-%).)5. The austenitic stainless steel according to claim 1, wherein the Pitting Resistance Equivalent Number (PREN), represented by the following equation (4), realizes 22 or more. Equation (4): PREN = 16 +3.3Mo +16N -0.5Mn (Here Mo, N and Mn mean the concentration of each element (wt.%).) 6. Patenttivaatimuksen 1 mukainen austeniittinen ruostumaton teräs, jossa myötö- lujuus (0,2 pysyvä venymä) on 400-450 MPa ja vetolujuus 700-850 MPa.6. Austenitic stainless steel according to claim 1, where the yield strength (0.2 permanent elongation) is 400-450 MPa and the tensile strength is 700-850 MPa. 7. Patenttivaatimuksen 1 mukainen austeniittinen ruostumaton teräs, jossa venymä on 35 % tai enemmän.7. An austenitic stainless steel according to claim 1, wherein the elongation is 35% or more.
FIEP19849274.6T 2018-08-13 2019-08-08 Austenitic stainless steel having improved strength FI3822384T3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020180094523A KR102160735B1 (en) 2018-08-13 2018-08-13 Austenitic stainless steel with improved strength
PCT/KR2019/009977 WO2020036370A1 (en) 2018-08-13 2019-08-08 Austenitic stainless steel having improved strength

Publications (1)

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FI3822384T3 true FI3822384T3 (en) 2023-03-20

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US (1) US20210292877A1 (en)
EP (1) EP3822384B8 (en)
KR (1) KR102160735B1 (en)
CN (1) CN112789365B (en)
FI (1) FI3822384T3 (en)
WO (1) WO2020036370A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113151736A (en) * 2021-01-28 2021-07-23 中航上大高温合金材料有限公司 Corrosion-resistant duplex stainless steel and preparation method thereof

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000026428A1 (en) * 1998-11-02 2000-05-11 Crs Holdings, Inc. Cr-mn-ni-cu austenitic stainless steel
JP3696552B2 (en) * 2001-04-12 2005-09-21 日新製鋼株式会社 Soft stainless steel plate with excellent workability and cold forgeability
EP1715073B1 (en) * 2004-01-29 2014-10-22 JFE Steel Corporation Austenitic-ferritic stainless steel
BRPI0820024B1 (en) * 2007-12-20 2018-06-12 Ati Properties Llc POOR AUSTENIC STAINLESS STEEL RESISTANT TO CORROSION AND MANUFACTURING ARTICLE INCLUDING THIS
US8337749B2 (en) * 2007-12-20 2012-12-25 Ati Properties, Inc. Lean austenitic stainless steel
KR101056235B1 (en) * 2008-11-25 2011-08-11 주식회사 포스코 Prediction of Material Properties of Austenitic Stainless Steel Cold Rolled Products
SE533635C2 (en) * 2009-01-30 2010-11-16 Sandvik Intellectual Property Austenitic stainless steel alloy with low nickel content, and article thereof
KR20120132691A (en) * 2010-04-29 2012-12-07 오또꿈뿌 오와이제이 Method for manufacturing and utilizing ferritic-austenitic stainless steel with high formability
KR101648694B1 (en) * 2011-10-21 2016-08-16 닛폰 스틸 앤드 스미킨 스테인레스 스틸 코포레이션 Duplex stainless steel, duplex stainless steel slab, and duplex stainless steel material
ES2885758T3 (en) * 2012-01-20 2021-12-15 Solu Stainless Oy Procedure for the manufacture of an austenitic stainless steel product
JP2014001422A (en) * 2012-06-18 2014-01-09 Nippon Steel & Sumitomo Metal Austenitic stainless steel plate and manufacturing method for the same
CN103627970A (en) * 2013-10-30 2014-03-12 振石集团东方特钢股份有限公司 Vanadium-containing austenitic stainless steel
FI125105B (en) * 2013-11-04 2015-06-15 Outokumpu Oy Austenitic stainless steel with grain boundary corrosion and method of manufacture
KR20150074697A (en) * 2013-12-24 2015-07-02 주식회사 포스코 Low-nickel containing stainless steels
JP6438253B2 (en) * 2014-09-26 2018-12-12 エア・ウォーターＮｖ株式会社 GAME STEEL BALL AND MANUFACTURING METHOD THEREOF
JP6763759B2 (en) * 2015-11-20 2020-09-30 日本精線株式会社 Duplex stainless steel wire with excellent magnetic properties, and magnetic wire mesh products for sieves, net conveyors, or filters
KR101952808B1 (en) * 2017-08-22 2019-02-28 주식회사포스코 Low nickel austenitic stainless steel having excellent hot workability and hydrogen embrittlement resistance

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Publication number Publication date
KR20200018995A (en) 2020-02-21
CN112789365A (en) 2021-05-11
EP3822384A1 (en) 2021-05-19
KR102160735B1 (en) 2020-09-28
WO2020036370A1 (en) 2020-02-20
CN112789365B (en) 2022-09-27
EP3822384B1 (en) 2023-01-18
EP3822384B8 (en) 2023-02-22
EP3822384A4 (en) 2021-09-01
US20210292877A1 (en) 2021-09-23

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