WO2024136060A1 - 오스테나이트계 스테인리스강 및 이의 제조방법 - Google Patents
오스테나이트계 스테인리스강 및 이의 제조방법 Download PDFInfo
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- WO2024136060A1 WO2024136060A1 PCT/KR2023/016065 KR2023016065W WO2024136060A1 WO 2024136060 A1 WO2024136060 A1 WO 2024136060A1 KR 2023016065 W KR2023016065 W KR 2023016065W WO 2024136060 A1 WO2024136060 A1 WO 2024136060A1
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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
- C22C38/42—Ferrous alloys, e.g. steel alloys containing chromium with nickel with copper
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- 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
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- 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
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- 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
- C21D6/005—Heat treatment of ferrous alloys containing Mn
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- 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 of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
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- 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 of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/0221—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
- C21D8/0226—Hot rolling
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- 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 of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/0247—Modifying the physical properties of ferrous metals or ferrous alloys 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 of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment following hot rolling
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- 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 of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/0247—Modifying the physical properties of ferrous metals or ferrous alloys 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
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- 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
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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
- C22C38/001—Ferrous alloys, e.g. steel alloys containing N
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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
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
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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
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
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- 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
- the present invention relates to an austenitic stainless steel with high elongation and low yield strength to realize high formability and a manufacturing method thereof. More specifically, it relates to austenitic stainless steel with high elongation and low yield strength for forming complex flow path shapes of polymer electrolyte fuel cell separators. It relates to low austenitic stainless steel and its manufacturing method.
- a molecular electrolyte fuel cell is a fuel cell that uses a polymer membrane as an electrolyte.
- hydrogen When hydrogen is supplied, when the hydrogen is separated into hydrogen ions and electrons, the hydrogen ions move to the opposite electrode through the electrolyte membrane, and the electrons move along the conductor rather than the membrane, causing current to flow.
- the advantages of polymer electrolyte fuel cells include simple structure and manufacturing method, and high weight and space efficiency. So, taking advantage of these strengths, it can be useful as a power source for transportation and locally installed power generation.
- a polymer electrolyte fuel cell has a gas diffusion layer that supplies and discharges hydrogen or air (oxygen) and water on both sides of a membrane electrode assembly that separates electrons from hydrogen or combines hydrogen ions and oxygen ions to generate water, and hydrogen and oxygen are gases.
- a unit cell is formed by combining a separator plate that supplies water to the diffusion layer or discharges generated water, and several such unit cells are combined in series to form a fuel cell stack.
- the separator plate requires processing of a finely curved flow path to supply hydrogen and oxygen to the electrode and efficiently discharge water, a reactant, and thus requires high formability.
- Graphite material which was previously used for separator purposes, is being replaced by stainless steel material in recent years due to high molding costs and low impact toughness.
- a high elongation rate is required to form areas with high deformation, such as fine bends, and a low yield strength is required to minimize springback after forming.
- austenitic stainless steel with excellent elongation and low yield strength that can be highly formed for polymer electrolyte fuel cell separator plates by utilizing stainless steel materials, especially austenitic stainless steel with high formability.
- the present invention optimizes C, Si, Mn, Cr, Ni, Cu, and N, which are the basic alloy elements of austenitic stainless steel, to achieve high corrosion resistance in a polymer electrolyte environment and to form a high-elongation and low-strength material capable of forming complex flow path shapes.
- the object is to provide austenitic stainless steel and a manufacturing method thereof.
- the high elongation and low strength austenitic stainless steel according to an embodiment of the present invention has C: 0.01% to 0.08%, Si: 0.1% to 1.0%, Mn: 0.1% to 1.5%, Cr: 20.0 by weight. % to 25.0%, Ni: 12.0% to 18.0%, Cu: 0.1% to 1.0%, N: 0.01% to 0.1%, P: 0.035% or less, S: 0.01% or less, the remainder includes Fe and inevitable impurities , satisfies the following equations (1) and (2).
- Equation (2) 60+300 ⁇ C+70 ⁇ Si-20 ⁇ Mn+7 ⁇ Cr+Ni+3 ⁇ Cu+530 ⁇ N ⁇ 300
- C, Si, Mn, Cr, Ni, Cu, N refer to the content (% by weight) of each element
- the austenitic stainless steel according to an embodiment of the present invention may have a yield strength of 300 MPa or less and an elongation of 48% or more.
- the method for manufacturing austenitic stainless steel according to an embodiment of the present invention is C: 0.01% to 0.08%, Si: 0.1% to 1.0%, Mn: 0.1% to 1.5%, Cr: 20.0% to 25.0 in weight percent. %, Ni: 12.0% to 18.0%, Cu: 0.1% to 1.0%, N: 0.01% to 0.1%, P: 0.035% or less, S: 0.01% or less, the remainder includes Fe and inevitable impurities, the formula below Manufacturing a slab that satisfies (1) and equation (2);
- Equation (2) 60+300 ⁇ C+70 ⁇ Si-20 ⁇ Mn+7 ⁇ Cr+Ni+3 ⁇ Cu+530 ⁇ N ⁇ 300
- C, Si, Mn, Cr, Ni, Cu, N refer to the content (% by weight) of each element
- the method of manufacturing austenitic stainless steel according to an embodiment of the present invention may have a yield strength of 300 MPa or less and an elongation of 48% or more after hot rolling annealing.
- high elongation and low strength austenitic stainless steel can be provided.
- Figure 1 is a diagram showing the range of equation (1) and elongation after hot rolling and annealing heat treatment for examples and comparative examples.
- Figure 2 is a diagram showing the range of equation (2) and the yield strength after hot rolling and annealing heat treatment for examples and comparative examples.
- the austenitic stainless steel according to the present invention has, in weight percent, C: 0.01% to 0.08%, Si: 0.1% to 1.0%, Mn: 0.1% to 1.5%, Cr: 20.0% to 25.0%, Ni: 12.0%. to 18.0%, Cu: 0.1% to 1.0%, N: 0.01% to 0.1%, P: 0.035% or less, S: 0.01% or less, the remainder includes Fe and inevitable impurities, and the following formula (1) and formula ( 2) is satisfied.
- Equation (2) 60+300 ⁇ C+70 ⁇ Si-20 ⁇ Mn+7 ⁇ Cr+Ni+3 ⁇ Cu+530 ⁇ N ⁇ 300
- C, Si, Mn, Cr, Ni, Cu, N refer to the content (% by weight) of each element
- the carbon (C) content is 0.01% to 0.08%.
- carbon (C) increases the stability of the austenite phase and is an element inevitably added during manufacturing, it can be added in an amount of 0.01% or more. However, if the content is excessive, Cr carbide is generated between welds and corrosion resistance is reduced, so the upper limit is limited to 0.08%. Additionally, the carbon content may be 0.01% to 0.03%.
- the content of silicon (Si) is 0.1% to 1.0%.
- Si is an element added to deoxidize the molten stainless steel and can be added in amounts of 0.1% or more. However, if it reduces the elongation of the material and its content is excessive, the quality of the material may deteriorate after surface pickling and edge cracks may occur during manufacturing due to an increase in inclusions, which may deteriorate the quality of the material. Considering this, the upper limit of Si content can be limited to 1.0%. Additionally, the silicon content may be 0.5% to 0.9%.
- the content of manganese (Mn) is 0.1% to 1.5%.
- Mn can improve the elongation of the material by stabilizing the austenite phase and developing mechanical twins between deformations, so it can be added at an amount of 0.1% or more. However, if the addition amount is excessive, inclusions are created and the corrosion resistance of the material is reduced, so the addition amount is limited to 1.5% or less. Additionally, the manganese content may be 0.8% to 1.3%.
- the content of chromium (Cr) is 20.0% to 25.0%.
- Cr is an element that must be added to stainless steel to improve corrosion resistance, and must be added by more than 20.0%, especially for fuel cell separator applications.
- Cr is a strong ferrite stabilizing element, so if the addition amount is excessive, the stability of the austenite phase decreases, so the upper limit is limited to 25.0%.
- the chromium content may be 20.0% to 23.0%.
- the content of nickel (Ni) is 12.0% to 18.0%.
- Nickel (Ni) is a strong austenite phase stabilizing element and must be added in an amount of 12.0% or more in the present invention. However, Ni is an expensive element, and as the addition amount increases, the raw material cost increases, limiting the upper limit to 18.0% or less. Additionally, the nickel content may be 12.0% to 17.2%.
- the content of copper (Cu) is 0.1% to 1.0%.
- Cu like Mn and Ni, is an element that stabilizes the austenite phase and is essentially added in the stainless steel manufacturing process using scrap, and can be added in amounts of 0.1% or more. However, if excessive, it may generate low-temperature liquid and cause edge defects during hot rolling, so the addition amount is limited to 1.0% or less. Additionally, the copper content may be 0.2% to 0.7%.
- the content of N is 0.01% to 0.1%.
- Nitrogen (N) is a strong austenite phase stabilizing element, but when added, it increases the yield strength of the material and reduces its elongation, thereby reducing the formability of the material. Therefore, in the present invention, considering the manufacturing process using stainless steel scrap, the addition amount is limited to 0.01% or more and 0.1% or less. Additionally, the nitrogen content may be 0.02% to 0.06%.
- the P content is 0.035% or less.
- Phosphorus (P) is an impurity that is inevitably contained in steel and is a major element that causes intergranular corrosion or impairs hot workability, so it is desirable to control its content as low as possible.
- the upper limit of the P content is managed at 0.035% or less.
- the S content is less than 0.01%.
- S Sulfur
- S is an impurity inevitably contained in steel and is an element that segregates at grain boundaries and is the main cause of impeding hot workability, so it is desirable to control its content as low as possible.
- the upper limit of the S content is managed at 0.01% or less.
- the remaining component of the present invention is iron (Fe).
- Fe iron
- Equations (1) and (2) In order to develop high-elongation, low-strength austenitic stainless steel, formulas representing elongation and yield strength according to the alloy composition of the austenite phase are required. For this purpose, equation (1) representing elongation and equation (2) representing strength were used. In order to satisfy an elongation of 48% or more and a yield strength of 300 MPa or less after hot rolling and annealing heat treatment, Equations (1) and (2) must be satisfied.
- the present invention relates to an austenitic stainless steel that satisfies an elongation of 48% or more and a yield strength of 300 MPa or less after hot rolling and annealing heat treatment, and a method for manufacturing the same, C: 0.01% to 0.08%, Si: 0.1% to 0.0% by weight. 1.0%, Mn: 0.1% to 1.5%, Cr: 20.0% to 25.0%, Ni: 12.0% to 18.0%, Cu: 0.1% to 1.0%, N: 0.01% to 0.1%, P: 0.035% or less, S : Manufacturing a slab containing 0.01% or less, the remainder being Fe and inevitable impurities, and satisfying the following equations (1) and (2);
- Equation (2) 60+300 ⁇ C+70 ⁇ Si-20 ⁇ Mn+7 ⁇ Cr+Ni+3 ⁇ Cu+530 ⁇ N ⁇ 300
- C, Si, Mn, Cr, Ni, Cu, N refer to the content (% by weight) of each element
- Stainless steel containing the above composition can be manufactured into cast steel by continuous casting or steel ingot casting, and a series of hot rolling and hot rolling annealing can be performed to form the final product.
- Slabs can be hot rolled at a temperature of 1,100 to 1,300°C, which is the normal rolling temperature, and hot rolled steel sheets can be hot rolled and annealed at a temperature of 1000 to 1,200°C. At this time, hot-rolled annealing may be performed for 100 to 300 seconds. Additionally, slabs can be hot rolled to a thickness of 2.5 to 5.0 mm.
- the austenitic stainless steel according to the present invention can be applied to fields requiring high formability, such as fuel cell separators.
- the results of measuring the elongation and yield strength of the annealed material manufactured with the above composition are shown in Table 2 below.
- the yield strength and elongation were measured using a JIS13B tensile test specimen at a tensile speed of 20 mm per minute through a tensile tester from Zwick Roell. , Measurements were made by performing tests at room temperature.
- Figure 1 is a graph showing equation (1) and elongation of examples and comparative examples
- Figure 2 is a graph showing equation (2) and yield strength.
- the examples that satisfy Equations (1) and (2) for the component range satisfy an elongation of 48% or more and a yield strength of 300 MPa or less, while Comparative Examples 2 to 4 have an elongation of It was less than 48%, and Comparative Examples 1 to 5 exceeded 300 MPa.
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Abstract
Description
| 강종 | 성분(%) | 식(1) | 식(2) | ||||||
| C | Si | Mn | Cr | Ni | Cu | N | |||
| 실시예1 | 0.01 | 0.7 | 1.3 | 20.4 | 14.6 | 0.2 | 0.02 | 59.9 | 254.6 |
| 실시예2 | 0.03 | 0.9 | 1.3 | 21.0 | 12.1 | 0.7 | 0.06 | 58.0 | 299.0 |
| 실시예3 | 0.03 | 0.5 | 1.0 | 23.0 | 14.5 | 0.5 | 0.02 | 62.0 | 271.6 |
| 실시예4 | 0.03 | 0.9 | 0.8 | 20.0 | 12.0 | 0.7 | 0.04 | 58.5 | 291.3 |
| 실시예5 | 0.03 | 0.5 | 1.3 | 23.0 | 17.2 | 0.2 | 0.05 | 58.1 | 283.3 |
| 비교예1 | 0.02 | 0.5 | 1.0 | 20.5 | 10.0 | 0.0 | 0.17 | 56.0 | 324.6 |
| 비교예2 | 0.04 | 0.5 | 1.3 | 25.7 | 19.6 | 0.0 | 0.09 | 53.5 | 328.2 |
| 비교예3 | 0.07 | 0.9 | 0.2 | 23.0 | 15.4 | 0.7 | 0.03 | 56.5 | 331.4 |
| 비교예4 | 0.04 | 0.7 | 0.1 | 21.7 | 13.4 | 1.0 | 0.10 | 54.1 | 337.0 |
| 비교예5 | 0.04 | 0.6 | 0.5 | 20.8 | 13.5 | 0.3 | 0.10 | 56.4 | 312.7 |
| 강종 | 연신율(%) | 항복강도(MPa) |
| 실시예1 | 50.8 | 253.1 |
| 실시예2 | 49.0 | 298.5 |
| 실시예3 | 53.2 | 270.9 |
| 실시예4 | 49.1 | 289.3 |
| 실시예5 | 48.8 | 281.0 |
| 비교예1 | 48.5 | 323.4 |
| 비교예2 | 44.1 | 327.0 |
| 비교예3 | 46.2 | 330.0 |
| 비교예4 | 45.1 | 335.7 |
| 비교예5 | 48.3 | 312.4 |
Claims (4)
- 중량 %로 C: 0.01% 내지 0.08%, Si: 0.1% 내지 1.0%, Mn: 0.1% 내지 1.5%, Cr: 20.0% 내지 25.0%, Ni: 12.0% 내지 18.0%, Cu: 0.1% 내지 1.0%, N: 0.01% 내지 0.1%, P: 0.035% 이하, S: 0.01% 이하, 나머지는 Fe 및 불가피한 불순물을 포함하고, 하기 식(1) 및 식(2)를 만족하는, 오스테나이트계 스테인리스강.식(1): 80+45×C-10×Si+2×Mn-Ni-Cu-70×N > 55식(2): 60+300×C+70×Si-20×Mn+7×Cr+Ni+3×Cu+530×N < 300(여기서, C, Si, Mn, Cr, Ni, Cu, N 은 각 원소의 함량(중량%)을 의미함)
- 제1항에 있어서,항복강도 300 MPa 이하 및 연신율 48% 이상인, 오스테나이트계 스테인리스강.
- 중량 %로 C: 0.01% 내지 0.08%, Si: 0.1% 내지 1.0%, Mn: 0.1% 내지 1.5%, Cr: 20.0% 내지 25.0%, Ni: 12.0% 내지 18.0%, Cu: 0.1% 내지 1.0%, N: 0.01% 내지 0.1%, P: 0.035% 이하, S: 0.01% 이하, 나머지는 Fe 및 불가피한 불순물을 포함하고, 하기 식(1) 및 식(2)를 만족하는 슬라브를 제조하는 단계;상기 슬라브를 1100~1300℃에서 열간압연하는 단계;상기 열간압연이 진행된 강판을 1000℃~1200℃에서 100초~300초동안 소둔하는 단계;를 포함하는, 오스테나이트계 스테인리스강의 제조방법.식(1): 80+45×C-10×Si+2×Mn-Ni-Cu-70×N > 55식(2): 60+300×C+70×Si-20×Mn+7×Cr+Ni+3×Cu+530×N < 300(여기서, C, Si, Mn, Cr, Ni, Cu, N 은 각 원소의 함량(중량%)을 의미함)
- 제3항에 있어서,열연 소둔 후에 항복강도 300 MPa 이하, 연신율 48% 이상인, 오스테나이트계 스테인리스강의 제조방법.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202380086273.XA CN120303435A (zh) | 2022-12-21 | 2023-10-17 | 奥氏体系不锈钢及其制造方法 |
| EP23907346.3A EP4613905A4 (en) | 2022-12-21 | 2023-10-17 | AUSTENITICAL STAINLESS STEEL AND ITS MANUFACTURING PROCESS |
| JP2025536902A JP2026500399A (ja) | 2022-12-21 | 2023-10-17 | オーステナイト系ステンレス鋼及びその製造方法 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2022-0180013 | 2022-12-21 | ||
| KR1020220180013A KR20240098332A (ko) | 2022-12-21 | 2022-12-21 | 오스테나이트계 스테인리스강 및 이의 제조방법 |
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| Publication Number | Publication Date |
|---|---|
| WO2024136060A1 true WO2024136060A1 (ko) | 2024-06-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| PCT/KR2023/016065 Ceased WO2024136060A1 (ko) | 2022-12-21 | 2023-10-17 | 오스테나이트계 스테인리스강 및 이의 제조방법 |
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| Country | Link |
|---|---|
| EP (1) | EP4613905A4 (ko) |
| JP (1) | JP2026500399A (ko) |
| KR (1) | KR20240098332A (ko) |
| CN (1) | CN120303435A (ko) |
| WO (1) | WO2024136060A1 (ko) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010037614A (ja) * | 2008-08-06 | 2010-02-18 | Sumitomo Metal Ind Ltd | 燃料電池セパレータ用ステンレス鋼および燃料電池用セパレータ |
| KR20150074768A (ko) * | 2013-12-24 | 2015-07-02 | 주식회사 포스코 | 연료전지용 오스테나이트계 스테인리스강 및 그 제조방법 |
| KR20190065720A (ko) * | 2017-12-04 | 2019-06-12 | 주식회사 포스코 | 성형성 및 내시효균열성이 우수한 오스테나이트계 스테인리스강 |
| KR102102608B1 (ko) * | 2019-12-20 | 2020-04-22 | 현대비앤지스틸 주식회사 | 고분자 연료전지 분리판용 스테인리스강 제조 방법 |
| JP7021706B2 (ja) * | 2019-07-31 | 2022-02-17 | Jfeスチール株式会社 | 燃料電池のセパレータの基材用オーステナイト系ステンレス鋼板 |
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| KR20190066734A (ko) * | 2017-12-06 | 2019-06-14 | 주식회사 포스코 | 내식성이 우수한 고경도 오스테나이트계 스테인리스강 |
| KR102752484B1 (ko) * | 2019-01-21 | 2025-01-09 | 제이에프이 스틸 가부시키가이샤 | 연료 전지의 세퍼레이터용의 오스테나이트계 스테인리스 강판 |
| EP4141137A4 (en) * | 2020-04-20 | 2025-07-30 | Nippon Steel Stainless Steel Corp | AUSTENITIC STAINLESS STEEL AND SPRING |
| EP4265761A4 (en) * | 2020-12-15 | 2024-05-29 | JFE Steel Corporation | Stainless steel sheet for separator of fuel cell |
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2023
- 2023-10-17 CN CN202380086273.XA patent/CN120303435A/zh active Pending
- 2023-10-17 WO PCT/KR2023/016065 patent/WO2024136060A1/ko not_active Ceased
- 2023-10-17 EP EP23907346.3A patent/EP4613905A4/en active Pending
- 2023-10-17 JP JP2025536902A patent/JP2026500399A/ja active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010037614A (ja) * | 2008-08-06 | 2010-02-18 | Sumitomo Metal Ind Ltd | 燃料電池セパレータ用ステンレス鋼および燃料電池用セパレータ |
| KR20150074768A (ko) * | 2013-12-24 | 2015-07-02 | 주식회사 포스코 | 연료전지용 오스테나이트계 스테인리스강 및 그 제조방법 |
| KR20190065720A (ko) * | 2017-12-04 | 2019-06-12 | 주식회사 포스코 | 성형성 및 내시효균열성이 우수한 오스테나이트계 스테인리스강 |
| JP7021706B2 (ja) * | 2019-07-31 | 2022-02-17 | Jfeスチール株式会社 | 燃料電池のセパレータの基材用オーステナイト系ステンレス鋼板 |
| KR102102608B1 (ko) * | 2019-12-20 | 2020-04-22 | 현대비앤지스틸 주식회사 | 고분자 연료전지 분리판용 스테인리스강 제조 방법 |
Non-Patent Citations (1)
| Title |
|---|
| See also references of EP4613905A4 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN120303435A (zh) | 2025-07-11 |
| EP4613905A1 (en) | 2025-09-10 |
| JP2026500399A (ja) | 2026-01-06 |
| EP4613905A4 (en) | 2026-04-29 |
| KR20240098332A (ko) | 2024-06-28 |
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