WO2016027009A1 - High strength austenitic stainless steel and production method thereof - Google Patents
High strength austenitic stainless steel and production method thereof Download PDFInfo
- Publication number
- WO2016027009A1 WO2016027009A1 PCT/FI2015/050539 FI2015050539W WO2016027009A1 WO 2016027009 A1 WO2016027009 A1 WO 2016027009A1 FI 2015050539 W FI2015050539 W FI 2015050539W WO 2016027009 A1 WO2016027009 A1 WO 2016027009A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- austenitic stainless
- stainless steel
- steel
- niobium
- grain size
- Prior art date
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Classifications
-
- 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
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/46—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for sheet metals
-
- 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
- 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
- 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
- C21D8/0221—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
- C21D8/0236—Cold rolling
-
- 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
- C21D8/0273—Final recrystallisation annealing
-
- 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
- C22C38/18—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
- C22C38/46—Ferrous alloys, e.g. steel alloys containing chromium with nickel with vanadium
-
- 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
- C22C38/48—Ferrous alloys, e.g. steel alloys containing chromium with nickel with niobium or tantalum
-
- 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
- C22C38/50—Ferrous alloys, e.g. steel alloys containing chromium with nickel with titanium or zirconium
-
- 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
- C21D2211/00—Microstructure comprising significant phases
- C21D2211/001—Austenite
Definitions
- This invention relates to a high strength austenitic stainless steel exhibiting good combination of strength and elongation and high isotropy of the mechanical properties.
- the invention relates also to the production method of the steel.
- Yield strength of austenitic stainless steel in annealed condition is relatively low.
- a conventional method for increasing the yield strength of austenitic stainless steels strip is temper rolling, i.e., strengthening of the steel strip by cold-rolling.
- Temper rolling has an important disadvantage: mechanical properties of temper-rolled steel tend to be highly anisotropic. For instance, yield strength of temper-rolled austenitic stainless steel may be up to 20 % higher in transverse direction compared to direction parallel to the rolling direction.
- the anisotropy is a drawback that, for instance, makes the forming of the austenitic stainless steel more difficult.
- temper rolling increases the strength at the expense of elongation.
- remaining elongation and formability after the temper rolling process may be too low.
- the refinement of grain size of steel is a well-known and efficient method to increase yield strength of austenitic stainless steels.
- the method can be utilized instead of temper rolling. Yield strength of the steel increases with decreasing grain size according to the well-known Hall-Petch relationship.
- the refinement of grain size compared to temper rolling has also the advantage that the anisotropy of the mechanical properties is substantially lower.
- the process window i.e. the allowable time and temperature range to reach a certain small grain size and strength level, may be too small. If the process window is too small, the mechanical properties may vary too much along the steel strip. In the case the target mechanical properties cannot be reached, substantial yield losses may occur.
- the JP publication 2014001422 relates to an austenitic stainless steel plate, with an average crystal grain size in the parent phase 10 ⁇ or less, and to its manufacturing method, which steel contains in weight % C: 0.02 to 0.30%, Cr: 10.0 to 25.0%, Ni: 3.5 to 10.0%, Si: 3.0% or less, Mn: 0.5% to 5.0%, N: 0.10 to 0.40%, C+3xN: 0.4% or more and Fe and impurities as the balance, and further optionally Mo: ⁇ 3 %, Cu: ⁇ 3 %, Nb: ⁇ 0.5 %, Ti: ⁇ 0.1 % and V: ⁇ 1 % so that the sum of Nb+Ti+V is 0-1 .6 %.
- the object of the present invention is to prevent drawbacks of the prior art and to produce a cost efficient high strength austenitic stainless steel exhibiting small grain size, high strength and isotropic mechanical properties.
- the invention relates also to the method of processing of the steel, and on the alloying of the steel with carbide and nitride forming elements in order to restrict grain growth and thus improve the processability of the steel.
- the essential features of the present invention are enlisted in the appended claims.
- an austenitic stainless steel is alloyed with carbide and nitride forming elements, such as niobium (Nb), titanium (Ti) and vanadium (V).
- carbide and nitride forming elements such as niobium (Nb), titanium (Ti) and vanadium (V).
- Nb niobium
- Ti titanium
- V vanadium
- these elements for carbide and nitride precipitates effectively restrict grain growth.
- the presence of these carbide precipitates and nitride precipitates enables a larger process window and processability.
- more than 0.05 weight % of at least one of the elements in the group of niobium (Nb), titanium (Ti) or vanadium (V) shall be added.
- the total amount of niobium (Nb), titanium (Ti) and vanadium (V) is lower than 0.5 weight %.
- the austenitic stainless steel according to the invention is made cost efficient by the reduction of the nickel content compared to conventional nickel- containing austenitic stainless steels. Therefore, the steel according to the invention does not contain more than 4.5 weight % nickel.
- the stainless steel of the invention is an austenitic stainless steel containing in weight % 0-0.4 % C, 0-3 % Si, 3-20 % Mn, 10-30 % Cr, 0-4.5 % Ni, 0-0.5 % Mo, 0-3 % Cu, 0.05-0.5 % N, 0-0.5 % Nb, 0-0.5 % Ti, 0-0.5 % V.
- the total amount of the niobium (Nb), titanium (Ti) and vanadium (V) contents being at the range of 0.05 - 0.5 % so that the content of at least one of the elements in the group of niobium (Nb), titanium (Ti) or vanadium (V) is more than 0.05 %, the balance of Fe and inevitable impurities, such as phosphorus, sulphur and oxygen.
- the grain size after annealing for a cold deformed product is lower than 10 micrometers, preferably lower than 7 micrometers, and more preferably lower than 5 micrometers.
- the difference between the yield strengths of the stainless steel measured in transverse and parallel directions to the rolling direction is less than 5 %.
- the high strength austenitic stainless steel according to the invention is produced via the conventional stainless steel process route including among others melting, AOD (Argon Oxygen Decarburization) converter and ladle treatments, continuous casting, hot rolling, cold rolling, annealing and pickling.
- the austenitic stainless steel according to the invention is annealed below the temperature of 1050°C, which temperature is lower than in a conventional production process. Lowering of the annealing temperature slows the grain growth, and thus smaller grain size and higher yield strength can be achieved.
- the annealing temperature shall be higher than 700°C.
- the desired annealing temperature range is thus 700 - 1050 °C, and the annealing time is 1 - 400 seconds, preferably 1 - 200 seconds.
- the cold deformation reduction, such as the cold rolling reduction, before the annealing process shall be high enough to enable formation of fine grain size.
- the deformation reduction degree, such as cold rolling reduction degree shall be at least 50 %.
- Fig. 1 shows influence of annealing time and temperature on grain size of a reference alloy containing no niobium
- Fig. 2 shows influence of annealing time and temperature on grain size of a test alloy according to the invention containing 0.05 % niobium
- Fig. 3 shows influence of annealing time and temperature on grain size of a test alloy according to the invention containing 0.1 1 % niobium
- Fig. 4 shows influence of annealing time and temperature on grain size of a test alloy according to the invention containing 0.28 % niobium
- Fig. 5 shows influence of annealing time and temperature on grain size of a test alloy according to the invention containing 0.45 % niobium and Fig. 6 shows the annealing window, i.e., combinations of annealing time and temperature, corresponding to reaching 2-3 micrometer ( ⁇ ) grain size in test alloys containing no niobium and 0.1 1 % niobium.
- Five austenitic test alloys 1 - 5 with varying amounts of niobium were studied. The chemical compositions of the test alloys are shown in Table 1 .
- the alloy 1 was produced in full-scale production and the alloys 2-5 in a pilot scale production unit. After melting, casting and hot rolling, the materials were subjected to a 60 % cold rolling reduction. Annealing tests were performed on the cold rolled materials at different temperatures and for varying annealing times with a Gleeble 1500 thermomechanical simulator. The heating rate was 200 °C/s and the cooling rate 200 °C/s down to 400 °C before natural air cooling.
- Figure 6 further demonstrates the beneficial effect of the niobium (Nb) content.
- Figure 6 presents the annealing window, i.e., the allowable combinations of the annealing temperature and the annealing time for reaching the grain size of 2-3 micrometers defined based on the experimental results. It is obvious that the annealing window is much larger for the alloy 3 with 0.1 1 weight % niobium (Nb).
- the allowable annealing time range for the alloy 1 without niobium (Nb) was only about 1 -10 s, whereas for the alloy 3 with 0.1 1 weight % niobium (Nb) the allowable annealing time range was 1 -100 s.
- the allowable annealing time range for the alloy 1 without niobium (Nb) was only about 1 -10 s, whereas for the alloy 3 with 0.1 1 weight % niobium (Nb) the allowable annealing time range was 1 -100 s.
- the alloys 6 and 7 were produced in a pilot scale production unit. As the alloys 1 - 5 after melting, casting and hot rolling, the alloys 6 and 7 were subjected to a 60 % cold rolling reduction. Tensile test samples were cut from the cold rolled sheets in the angles 0°, 45° and 90° to the rolling direction. The tensile test samples were subsequently annealed in a laboratory furnace at temperatures of 900 °C and 950 °C for 300 seconds and water quenched. Table 3 presents test results of these samples measured in the tensile test directions having the angles of 0° 45° and 90° to the rolling direction. Also the grain sizes of the materials are shown.
- the measured yield strength values measured in different directions are close to each other, i.e., the properties do not exhibit high anisotropy.
- the difference between the yield strengths of the alloys 6 and 7 measured in transverse and parallel directions to the rolling direction is less than 5 %.
- the grain size of the alloys 6 and 7 has remained at low levels despite the rather long annealing time due to the beneficial effect of the Nb alloying, which has resulted in attractive mechanical properties.
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201580044801.0A CN106574351A (en) | 2014-08-21 | 2015-08-21 | High strength austenitic stainless steel and production method thereof |
US15/505,505 US20170268076A1 (en) | 2014-08-21 | 2015-08-21 | High Strength Austenitic Stainless Steel and Production Method Thereof |
EP15834538.9A EP3191612A4 (en) | 2014-08-21 | 2015-08-21 | High strength austenitic stainless steel and production method thereof |
JP2017510383A JP2017531093A (en) | 2014-08-21 | 2015-08-21 | High strength austenitic stainless steel and method for producing the same |
KR1020177004879A KR20170029631A (en) | 2014-08-21 | 2015-08-21 | High strength austenitic stainless steel and production method thereof |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FI20145735 | 2014-08-21 | ||
FI20145735A FI127274B (en) | 2014-08-21 | 2014-08-21 | AUSTENITIC STAINLESS STEEL WITH HIGH STABILITY AND ITS PRODUCTION METHOD |
Publications (1)
Publication Number | Publication Date |
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WO2016027009A1 true WO2016027009A1 (en) | 2016-02-25 |
Family
ID=55350237
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FI2015/050539 WO2016027009A1 (en) | 2014-08-21 | 2015-08-21 | High strength austenitic stainless steel and production method thereof |
Country Status (7)
Country | Link |
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US (1) | US20170268076A1 (en) |
EP (1) | EP3191612A4 (en) |
JP (1) | JP2017531093A (en) |
KR (1) | KR20170029631A (en) |
CN (1) | CN106574351A (en) |
FI (1) | FI127274B (en) |
WO (1) | WO2016027009A1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20180059717A (en) * | 2016-11-25 | 2018-06-05 | 한국기계연구원 | Austenitic stainless steel with improved pitting corrosion resistance |
CN110062814A (en) * | 2016-12-13 | 2019-07-26 | 株式会社Posco | Low alloy steel plate with excellent intensity and ductility |
CN112111691A (en) * | 2020-08-12 | 2020-12-22 | 广西柳钢中金不锈钢有限公司 | Copper-free nickel-saving cold-rolled austenitic stainless steel and manufacturing method thereof |
WO2022101278A1 (en) | 2020-11-13 | 2022-05-19 | Acerinox Europa, S.A.U. | Low ni content austenitic stainless steel with high strength / ductility properties |
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HUE051081T2 (en) * | 2017-02-10 | 2021-03-01 | Outokumpu Oy | Steel component manufactured by hot forming, method of manufacturing and use of the component |
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KR102021277B1 (en) * | 2017-11-23 | 2019-09-16 | 한국기계연구원 | C+n austenitic stainless steel with excellent mechanical properties and corrosion resistance |
KR102268906B1 (en) * | 2019-07-17 | 2021-06-25 | 주식회사 포스코 | Austenitic stainless steel with imporoved strength and method for manufacturing the same |
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KR102445585B1 (en) * | 2020-09-18 | 2022-09-21 | 한국과학기술원 | Low activation austenitic stainless steel having tantalium and preparing method of the same |
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KR20230166672A (en) * | 2022-05-31 | 2023-12-07 | 주식회사 포스코 | Austenite stainless steel and manufacturing method |
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Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0694626A1 (en) * | 1994-07-26 | 1996-01-31 | Acerinox S.A. | Austenitic stainless steel with low nickel content |
JP2008038191A (en) * | 2006-08-04 | 2008-02-21 | Nippon Metal Ind Co Ltd | Austenitic stainless steel and its production method |
WO2010087766A1 (en) * | 2009-01-30 | 2010-08-05 | ≤Sandvik Intellectual Property Ab | Stainless austenitic low ni steel alloy |
JP2014001422A (en) * | 2012-06-18 | 2014-01-09 | Nippon Steel & Sumitomo Metal | Austenitic stainless steel plate and manufacturing method for the same |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6037182B2 (en) * | 1977-03-24 | 1985-08-24 | 日本冶金工業株式会社 | High strength austenitic stainless steel with excellent corrosion resistance |
JPH05117813A (en) * | 1991-04-18 | 1993-05-14 | Nisshin Steel Co Ltd | Stainless steel for metal gasket having excellent formability and fatigue characteristic and this manufacture |
JP5544633B2 (en) * | 2007-07-30 | 2014-07-09 | 新日鐵住金ステンレス株式会社 | Austenitic stainless steel sheet for structural members with excellent shock absorption characteristics |
JP5347600B2 (en) * | 2009-03-16 | 2013-11-20 | 新日鐵住金株式会社 | Austenitic stainless steel and method for producing austenitic stainless steel sheet |
JP5597006B2 (en) * | 2010-03-26 | 2014-10-01 | 新日鐵住金ステンレス株式会社 | High strength and high ductility austenitic stainless steel sheet for structural members and method for producing the same |
CN102337481B (en) * | 2010-07-20 | 2013-11-13 | 宝山钢铁股份有限公司 | Molybdenum-containing nickel-saving austenitic stainless steel with excellent corrosion resistance and manufacturing method thereof |
JP6056132B2 (en) * | 2010-11-25 | 2017-01-11 | Jfeスチール株式会社 | Austenitic and ferritic duplex stainless steel for fuel tanks |
-
2014
- 2014-08-21 FI FI20145735A patent/FI127274B/en not_active IP Right Cessation
-
2015
- 2015-08-21 KR KR1020177004879A patent/KR20170029631A/en not_active Application Discontinuation
- 2015-08-21 JP JP2017510383A patent/JP2017531093A/en active Pending
- 2015-08-21 CN CN201580044801.0A patent/CN106574351A/en active Pending
- 2015-08-21 US US15/505,505 patent/US20170268076A1/en not_active Abandoned
- 2015-08-21 EP EP15834538.9A patent/EP3191612A4/en not_active Withdrawn
- 2015-08-21 WO PCT/FI2015/050539 patent/WO2016027009A1/en active Application Filing
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0694626A1 (en) * | 1994-07-26 | 1996-01-31 | Acerinox S.A. | Austenitic stainless steel with low nickel content |
JP2008038191A (en) * | 2006-08-04 | 2008-02-21 | Nippon Metal Ind Co Ltd | Austenitic stainless steel and its production method |
WO2010087766A1 (en) * | 2009-01-30 | 2010-08-05 | ≤Sandvik Intellectual Property Ab | Stainless austenitic low ni steel alloy |
JP2014001422A (en) * | 2012-06-18 | 2014-01-09 | Nippon Steel & Sumitomo Metal | Austenitic stainless steel plate and manufacturing method for the same |
Non-Patent Citations (1)
Title |
---|
See also references of EP3191612A4 * |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20180059717A (en) * | 2016-11-25 | 2018-06-05 | 한국기계연구원 | Austenitic stainless steel with improved pitting corrosion resistance |
KR101903403B1 (en) * | 2016-11-25 | 2018-10-04 | 한국기계연구원 | Austenitic stainless steel with improved pitting corrosion resistance |
CN110062814A (en) * | 2016-12-13 | 2019-07-26 | 株式会社Posco | Low alloy steel plate with excellent intensity and ductility |
EP3556892A4 (en) * | 2016-12-13 | 2019-10-23 | Posco | Low alloy steel sheet having excellent strength and ductility |
CN112111691A (en) * | 2020-08-12 | 2020-12-22 | 广西柳钢中金不锈钢有限公司 | Copper-free nickel-saving cold-rolled austenitic stainless steel and manufacturing method thereof |
WO2022101278A1 (en) | 2020-11-13 | 2022-05-19 | Acerinox Europa, S.A.U. | Low ni content austenitic stainless steel with high strength / ductility properties |
Also Published As
Publication number | Publication date |
---|---|
EP3191612A1 (en) | 2017-07-19 |
FI127274B (en) | 2018-02-28 |
US20170268076A1 (en) | 2017-09-21 |
KR20170029631A (en) | 2017-03-15 |
EP3191612A4 (en) | 2018-01-24 |
JP2017531093A (en) | 2017-10-19 |
CN106574351A (en) | 2017-04-19 |
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