CN105803347A - Ferritic stainless steel with excellent formability and manufacturing method thereof - Google Patents
Ferritic stainless steel with excellent formability and manufacturing method thereof Download PDFInfo
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- CN105803347A CN105803347A CN201410840622.5A CN201410840622A CN105803347A CN 105803347 A CN105803347 A CN 105803347A CN 201410840622 A CN201410840622 A CN 201410840622A CN 105803347 A CN105803347 A CN 105803347A
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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
- C22C38/26—Ferrous alloys, e.g. steel alloys containing chromium with niobium or tantalum
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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 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
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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
- C22C38/22—Ferrous alloys, e.g. steel alloys containing chromium with molybdenum or tungsten
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Abstract
The present invention relates to ferritic stainless steel with excellent formability capable of maintaining excellent elongation percentage and excellent corrosion resistance by adjusting contents for each comprised of molten steel to manufacture stainless steel; and to a manufacturing method thereof. According to an embodiment of the present invention, ferritic stainless steel with excellent formability comprises: 001-0.005 wt% of C, 0.005-0.15 wt% of N, 0.05-0.20 wt% of Si, 0.01-0.10 wt% of Mn, 0.01-0.03 wt% of P, 15-18.5 wt% of Cr, 0.01-0.10 wt% of Al, 0.10-0.30 wt% of Ti, 0.01-0.10 wt% of Nb, and the remainder consisting of Fe and inevitable impurities. The present invention is characterized by satisfying the following [formula 1]: 0.1 < 400C+85.7N+55.6P+7.7Si+7.3Nb < 4.4; where C, N, P, Si, and Nb represents contents for each component (wt%).
Description
Technical field
The present invention relates to the excellent ferritic stainless steel of a kind of mouldability and manufacture method thereof, particularly relate to a kind of can passing through to regulate for manufacturing the constituent content in stainless molten steel, maintain excellent elongation percentage and the ferritic stainless steel corrosion proof, mouldability is excellent and manufacture method thereof.
Background technology
Generally, rustless steel is classified according to chemical constituent or metal structure.When carrying out classifying according to metal structure, rustless steel is divided into Austenitic (300 are), ferrite type (400 are), martensite type and biphasic or bipolar type.
In this rustless steel, the hot properties such as the coefficient of thermal expansion of ferritic stainless steel (400 are), heat exhaustion is excellent, and anticorrosion stress-resistant cracking is strong, and elevated temperature strength is also excellent.Owing to having this characteristic, ferritic stainless steel is applicable to automobile exhaust system, domestic appliance, construction material, household appliances and elevator etc..
But, to use ferrite stainless steel need the purposes of high corrosion-resistant at utensil for kitchen use, gas range, dishwasher etc. in, then need to meet corrosion resistance and processability simultaneously, but existing high corrosion-resistant ferritic stainless steel exists the relatively low problem making processability severe of elongation percentage.Additionally, owing to the Cr content of high corrosion-resistant ferritic stainless steel is high, therefore the phenomenon producing hot rolling bonding (sticking) defect increases, thus needing suitably to regulate Cr content, simultaneously added with helping the corrosion resistance that improves corrosion proof element to guarantee required level.
All the time, many research worker propose the multiple manufacture method of the processability improving ferritic stainless steel.Such as, have by regulating the method that the state-variable in manufacturing process improves processability.Such as, at " ferritic stainless steel of excellent in workability and manufacture method (KR published patent 10-2012-0073644 thereof；Patent documentation 1) " in, specifically disclose by cold rolling and Heat Treatment Control R value method.
But, the technology in patent documentation 1 improves processability by improving manufacturing process, and the applicant has drawn a kind of when not improving manufacturing process, improves processability and corrosion proof method by regulating the content of the alloy compositions forming molten steel.
Especially, many research worker have been studied with the generation to suppressing bonding (sticking) defect of the multiple method the ferritic stainless steel that shows high corrosion-resistant and processability also excellent always, but these methods exist and are difficult to apply to scene or the problem consuming a large amount of expense.
Prior art literature
Patent documentation
Patent documentation 1: KR published patent 10-2012-0073644 (2012.07.05)
Summary of the invention
The problem that invention to solve
The present invention provides a kind of when not improving manufacturing process, by regulating the alloy compositions reducing generation impact on elongation percentage and the content on the corrosion proof alloy compositions improving and producing impact, so that final cold-rolled products do not produce bonding defect, and there is ferritic stainless steel and the manufacture method thereof of the elongation percentage of excellence and the mouldability excellence of Pitting Potential value.
The method solving problem
The ferritic stainless steel that mouldability according to one embodiment of the present invention is excellent is characterised by, it comprises: the Nb of Ti, 0.01wt% of Al, 0.10wt% of Cr, 0.01wt% of P, 15wt% of Mn, 0.01wt% of Si, 0.01wt% of N, 0.05wt% of C, 0.005wt% of 0.001wt%～0.005wt%～0.15wt%～0.20wt%～0.10wt%～0.03wt%～18.5wt%～0.10wt%～0.30wt%～0.10wt%, remaining Fe and other inevitable impurity, and meet following [formula 1]
0.1 < 400C+85.7N+55.6P+7.7Si+7.3Nb < 4.4 [formula 1]
In [formula 1], C, N, P, Si and Nb refer to the content of each component in wt%.
Herein, the ferritic stainless steel that mouldability is excellent is characterised by, described stainless elongation percentage is more than 35%.
It addition, the ferritic stainless steel of mouldability excellence is characterised by, described rustless steel also comprises the Mo of 0.5wt%～1.0wt%, and meets following [formula 2],
185 < 10Cr+28.3Mo < 210 [formulas 2]
In [formula 2], Cr and Mo refers to the content of each component in wt%.
Herein, the ferritic stainless steel that mouldability is excellent is characterised by, described stainless Pitting Potential is at more than 270mV.
nullAdditionally，The manufacture method of the ferritic stainless steel that mouldability according to one embodiment of the present invention is excellent is characterised by，Manufacture the C comprising 0.001wt%～0.005wt%、The N of 0.005wt%～0.15wt%、The Si of 0.05wt%～0.20wt%、The Mn of 0.01wt%～0.10wt%、The P of 0.01wt%～0.03wt%、The Cr of 15wt%～18.5wt%、The Al of 0.01wt%～0.10wt%、The Ti of 0.10wt%～0.30wt%、The Nb of 0.01wt%～0.10wt%、The slab of remaining Fe and other inevitable impurity，And described slab is implemented hot rolling、Hot-roll annealing、Cold rolling and cold rolled annealed，And the component being used for manufacturing in the molten steel of described slab meets following [formula 1]，
0.1 < 400C+85.7N+55.6P+7.7Si+7.3Nb < 4.4 [formula 1]
In [formula 1], C, N, P, Si and Nb refer to the content of each component in wt%.
Herein, the manufacture method of the ferritic stainless steel that mouldability is excellent is characterised by, described cold rolled annealed after stainless elongation percentage more than 35%.
It addition, the manufacture method of the excellent ferritic stainless steel of mouldability is characterised by, also comprises the Mo of 0.5wt%～1.0wt% for manufacturing the component in the molten steel of described slab, and meet following [formula 2],
185 < 10Cr+28.3Mo < 210 [formulas 2]
In [formula 2], Cr and Mo refers to the content of each component in wt%.
Herein, described cold rolled annealed after stainless Pitting Potential at more than 270mV.
The effect of invention
According to embodiments of the present invention, having the effect that by being suitably adjusted most for manufacturing the content reducing the alloy compositions producing impact in the component in stainless molten steel, on elongation percentage, making elongation percentage maintain more than 35%, thus improving processability.
It addition, also have the effect that by being suitably adjusted most content in the component constituting molten steel, on the corrosion proof alloy compositions improving and producing impact, Pitting Potential value is made to maintain more than 270mV, thus improving corrosion resistance.
Accompanying drawing explanation
Fig. 1 illustrates the chart on the relation between the relational expression and the elongation percentage that reduce the alloy compositions producing impact of elongation percentage.
Fig. 2 is the chart illustrating the relation between relational expression and Pitting Potential value on the corrosion proof alloy compositions improving and producing impact.
Detailed description of the invention
Hereinafter, with reference to accompanying drawing, embodiments of the invention are described in more detail.But the present invention can implement in a variety of forms and be not limited to embodiments described hereinafter.The present embodiment is to intactly disclose the present invention, and the scope of the present invention is intactly passed to the technical staff with Conventional wisdom and provides.
The present invention provides the ferritic stainless steel of Ti, 0.01wt% of Al, 0.10wt% of Cr, 0.01wt% of P, 15wt% of Mn, 0.01wt% of Si, 0.01wt% of N, 0.05wt% of a kind of C, 0.005wt%～0.15wt% the comprising 0.001wt%～0.005wt%～0.20wt%～0.10wt%～0.03wt%～18.5wt%～0.10wt%～0.30wt%～Nb of 0.10wt%, remaining Fe and other inevitable impurity.It addition, the Mo of 0.5wt%～1.0wt% also can be comprised.
The content of carbon (C) is preferably more than 0.001wt% and below 0.005wt%.If the content of carbon (C) is many, then intensity can improve, but processability can be made to reduce.For obtaining the intensity of abundance, the carbon (C) of more than 0.001wt% need to be comprised, but if more than 0.005wt%, then processability significantly reduces.
The content of nitrogen (N) is preferably more than 0.005wt% and below 0.015wt%.Nitrogen (N) has the effect improving the strength of materials in the same manner with carbon (C).If the content of nitrogen (N) is less than 0.005wt%, then TiN crystallize reduces, so that the equiaxial crystal ratio of slab reduces；If more than 0.015wt%, then the impurity of material increases and causes that elongation percentage declines.
The content of silicon (Si) is preferably more than 0.05wt% and below 0.20wt%.Silicon (Si) contributes to the element of deoxidation, and this effect can be obtained by the silicon containing more than 0.03%.If but more than 0.20wt%, then depositing impurity in the material and increase and the problem that causes elongation percentage to reduce.
The content of manganese (Mn) is preferably more than 0.01wt% and below 0.10wt%.Manganese (Mn) has the effect of the intensity improving steel.This effect can be obtained by the manganese containing more than 0.01wt%, if but the content of interpolation is too much, then can precipitate out the MnS causing corrosion, thus reducing corrosion resistance.Therefore below 0.10wt% is comprised.
The content of phosphorus (P) is preferably more than 0.01wt% and below 0.03wt%.Phosphorus (P) is the element being inevitably included in steel, if its content is less than 0.001wt%, then can cause that refining cost rises；If adding too much content, weldability can be made to reduce, therefore easily caused by grain boundary corrosion, thus comprising below 0.03wt%.
The content of chromium (Cr) is preferably more than 15wt% and below 18.5wt%.Chromium (Cr) is the most important element added for guaranteeing stainless corrosion resistance.In the present invention, the chromium (Cr) of more than 15wt% is with the addition of in order to realize high corrosion-resistant.But, if the content of chromium (Cr) is more than 18.5wt%, then can cause the generation of hot rolling bonding (sticking) defect.Therefore, below 18.5wt% is comprised.
The content of aluminum (Al) is preferably more than 0.01wt% and below 0.10wt%.If the content of aluminum (Al) is less than 0.01wt%, then can cause that refining cost rises；If more than 0.10wt%, then the impurity of material is made to increase and cause that elongation percentage declines.
The content of titanium (Ti) is preferably more than 0.10wt% and below 0.30wt%.If the content of titanium (Ti) is less than 0.10wt%, then TiN crystallize amount reduces, and the equiaxial crystal ratio of slab reduces, and the C of solid solution, N element increase and cause that elongation percentage declines；If more than 0.30wt%, then Ti system oxide increases, and causes that processability declines.
The content of niobium (Nb) is preferably more than 0.01wt% and below 0.10wt%.Niobium (Nb) preferentially combines with carbon (C), nitrogen (N) and forms the precipitate for suppressing corrosion resistance to reduce, but when adding too much content, can cause that the bad order caused by field trash and toughness reduce, and cost increase.Therefore, its content is suppressed at more than 0.01wt% and below 0.10wt%.
The content of molybdenum (Mo) is preferably more than 0.5wt% and below 1.0wt%.Molybdenum (Mo) is for promoting being passivated again of passivating film, thus improves stainless corrosion proof element, makes effect double by adding in the lump with chromium (Cr).Based on the corrosion proof raising effect of molybdenum (Mo) when comprising more than 0.5wt% molybdenum comparatively notable, if but the content of molybdenum (Mo) is more than 1.0wt%, then can cause that price rises.
The rustless steel that the present invention is excellent in order to manufacture mouldability, will have the molten steel continuous casting in conventional manner of said components and produce slab, afterwards it be reheated, and implement hot rolling, hot-roll annealing, cold rolling and cold rolled annealed.
Especially, when each constituent content regulated in molten steel, in order to make the elongation percentage of final products maintain more than 35%, it is preferable that limit the content reducing element such as phosphorus C, N, P, Si and the Nb producing impact on elongation percentage further.For example, it is preferable to meet following [formula 1],
0.1 < 400C+85.7N+55.6P+7.7Si+7.3Nb < 4.4 [formula 1]
In [formula 1], for purposes of illustration only, be defined as " A " by 400C+85.7N+55.6P+7.7Si+7.3Nb, and C, N, P, Si and Nb refer to the content of each component in wt%.
Additionally, when each constituent content regulated in molten steel, in order to ensure corrosion resistance, Pitting Potential value is maintained more than 270mV, and for the problem that the generation and expense that solve hot rolling bonding (sticking) defect rise, it is preferable that limit the content on corrosion proof element such as Cr and the Mo improving and producing impact further.For example, it is preferable to meet following [formula 2].
185 < 10Cr+28.3Mo < 210 [formulas 2]
In [formula 2], for purposes of illustration only, be defined as " B " by 10Cr+28.3Mo, and Cr and Mo refers to the content of each component in wt%.
[embodiment]
Hereinafter, by embodiment, the present invention will be described.
Working condition according to business ferritic stainless steel, implement the test producing final cold-reduced sheet, and utilize the molten steel changing each constituent content as shown in table 1 and produce, cast continuously and be prepared for slab, and the hot rolled plate having been carried out hot rolling has been carried out hot-roll annealing, cold rolling and cold rolled annealed process.
Specifically, each slab that the molten steel regulating constituent content as shown in table 1 for use is cast continuously, select the temperature ranges of 1200～1300 DEG C and reheat and carry out hot rolling, then annealed so that the temperature range of 900～1000 DEG C maintains 30 seconds in continuous annealing furnace.Then, to carrying out tension test through cold rolling and cold rolled annealed product and measuring Pitting Potential, thus have rated elongation percentage and corrosion resistance, and the results are shown in table 2.It addition, observation bonds, whether the generation of (sticking), and its result is shown in table 2 in the lump.
As shown in [table 1], in No.1 to No.15, each constituent content of steel except No.8, No.10 and No.11 meets individually the preferable range of respective components disclosed by the invention.But, the steel (example 1 group) of No.5 to No.7 is unsatisfactory for the condition of the B value represented by [formula 2] of the relation for limiting Cr and Mo, No.1 to No.4, No.8 to No.11 steel (comparative example group) be unsatisfactory for the condition of the A value represented by [formula 1] of the relation for limiting C, N, P, Si and Nb, condition that the steel (example 2 groups) of No.12 to No.15 is satisfied by the A value represented by [formula 1] and the condition both sides of B value represented by [formula 2].
It addition, in table 2, for the whether generation of bond (sticking), "○" refers to and creates bonding, and "×" refers to and do not produce bonding.
[table 1]
[table 2]
As shown in Table 1 and Table 2, when the content of each component being controlled in described preferable range and meet the condition of A value represented by [formula 1] (example 1 group and 2 groups), can confirm that and do not produce to bond, and elongation percentage is more than 35%；On the contrary, when the condition of the A value being unsatisfactory for represented by [formula 1] (comparative example group), can confirm that elongation percentage is less than 35%.
It addition, Fig. 1 illustrates the chart on the relation between the relational expression and the elongation percentage that reduce the alloy compositions producing impact of elongation percentage, can confirm that: when meeting [formula 1], elongation percentage is more than 35%；When being unsatisfactory for [formula 1], elongation percentage is less than 35%.
Therefore, processability is improved in order to make elongation percentage maintain more than required level, it is preferable that control the content of C, N, P, Si and Nb, so that the A value represented by [formula 1] is more than 0.1 and less than in the scope of 4.4.
It addition, as shown in Table 1 and Table 2, can confirm that: when being controlled in described preferable range by the content of each component and meet [formula 1], being unsatisfactory for time [formula 2] (example 1 group), Pitting Potential value is less than 270mV.On the contrary, meeting time [formula 2] (part and example 1 group) in comparative example group, the Pitting Potential value of final cold rolled annealed product is at more than 270mV.
It addition, Fig. 2 is the chart illustrating the relation between relational expression and Pitting Potential value on the corrosion proof alloy compositions improving and producing impact, can confirm that: when meeting [formula 2], Pitting Potential value is at more than 270mV；When being unsatisfactory for [formula 2], Pitting Potential value is less than 270mV.
Therefore, corrosion resistance is improved in order to make Pitting Potential value maintain more than required level, it is preferable that control the content of Cr and Mo, so that the B value represented by [formula 2] is more than 185 and less than in the scope of 210.
Above, described the present invention by accompanying drawing and described preferred embodiment, but the present invention is not limited to this, but limited by appended claims.Therefore, the present invention in the scope that the technology without departing from appended claims is conceived, can be carried out various deformation and amendment by those of ordinary skill in the art.
Claims (8)
1. the ferritic stainless steel that a mouldability is excellent, it is characterised in that
Described rustless steel comprises: the Nb of Ti, 0.01wt% of Al, 0.10wt% of Cr, 0.01wt% of P, 15wt% of Mn, 0.01wt% of Si, 0.01wt% of N, 0.05wt% of C, 0.005wt% of 0.001wt%～0.005wt%～0.15wt%～0.20wt%～0.10wt%～0.03wt%～18.5wt%～0.10wt%～0.30wt%～0.10wt%, remaining Fe and other inevitable impurity, and meet following formula 1
0.1 < 400C+85.7N+55.6P+7.7Si+7.3Nb < 4.4 [formula 1]
In formula 1, C, N, P, Si and Nb refer to the content of each component in wt%.
2. the ferritic stainless steel that mouldability according to claim 1 is excellent, it is characterised in that
Described stainless elongation percentage is more than 35%.
3. the ferritic stainless steel that mouldability according to claim 1 and 2 is excellent, it is characterised in that
Described rustless steel also comprises the Mo of 0.5wt%～1.0wt%, and meets following formula 2,
185 < 10Cr+28.3Mo < 210 [formulas 2]
In formula 2, Cr and Mo refers to the content of each component in wt%.
4. the ferritic stainless steel that mouldability according to claim 3 is excellent, it is characterised in that
Described stainless Pitting Potential is at more than 270mV.
5. the manufacture method of the ferritic stainless steel of a mouldability excellence, it is characterised in that
Manufacture the slab of Ti, 0.01wt% of Al, 0.10wt% of Cr, 0.01wt% of P, 15wt% of Mn, 0.01wt% of Si, 0.01wt% of N, 0.05wt% of comprising C, 0.005wt% of the 0.001wt%～0.005wt%～0.15wt%～0.20wt%～0.10wt%～0.03wt%～18.5wt%～0.10wt%～0.30wt%～Nb of 0.10wt%, remaining Fe and other inevitable impurity, and described slab is implemented hot rolling, hot-roll annealing, cold rolling and cold rolled annealed
Following formula 1 is met for manufacturing the component in the molten steel of described slab,
0.1 < 400C+85.7N+55.6P+7.7Si+7.3Nb < 4.4 [formula 1]
In formula 1, C, N, P, Si and Nb refer to the content of each component in wt%.
6. the manufacture method of the ferritic stainless steel that mouldability according to claim 5 is excellent, it is characterised in that
Carry out described cold rolled annealed after, described stainless elongation percentage is more than 35%.
7. the manufacture method of the ferritic stainless steel of the mouldability excellence according to claim 5 or 6, it is characterised in that
Also comprise the Mo of 0.5wt%～1.0wt% for manufacturing the component in the molten steel of described slab, and meet following formula 2,
185 < 10Cr+28.3Mo < 210 [formulas 2]
In formula 2, Cr and Mo refers to the content of each component in wt%.
8. the manufacture method of the ferritic stainless steel that mouldability according to claim 7 is excellent, it is characterised in that
Described cold rolled annealed after stainless Pitting Potential at more than 270mV.
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| KR1020140102109A KR101614606B1 (en) | 2014-08-08 | 2014-08-08 | Ferritic stainless steel with excellent formability and manufacturing method thereof |
| KR10-2014-0102109 | 2014-08-08 |
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| KR101668535B1 (en) * | 2014-12-26 | 2016-10-24 | 주식회사 포스코 | Ferritic stainless steel |
| KR102302386B1 (en) * | 2019-05-13 | 2021-09-15 | 주식회사 포스코 | Ferritic stainless steel with improved corrosion resistance |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1788102A (en) * | 2004-04-07 | 2006-06-14 | 新日铁住金不锈钢株式会社 | Ferritic stainless steel sheet with excellent formability, and its manufacturing method |
| CN101255532A (en) * | 2007-02-26 | 2008-09-03 | 新日铁住金不锈钢株式会社 | Ferrite series stainless steel plate having excellent formability with small roughness of machining surface and method for manufacturing same |
| CN101538683A (en) * | 2008-03-19 | 2009-09-23 | 宝山钢铁股份有限公司 | Ferritic stainless steel with excellent formability and manufacturing method thereof |
| CN101812641A (en) * | 2009-02-25 | 2010-08-25 | 宝山钢铁股份有限公司 | Ferrite stainless steel and manufacturing method thereof |
| CN101845595A (en) * | 2009-03-26 | 2010-09-29 | 宝山钢铁股份有限公司 | Ferritic stainless steel with good wrinkle resistance and production method thereof |
| KR20120073644A (en) * | 2010-12-27 | 2012-07-05 | 주식회사 포스코 | Ferritic stainless steel with good workability and method of manufacturing the same |
| CN102839328A (en) * | 2011-06-24 | 2012-12-26 | 宝山钢铁股份有限公司 | Ferritic stainless steel plate with high deep drawing quality and low anisotropy and preparation method of ferritic stainless steel plate |
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| JP2007270168A (en) * | 2006-03-30 | 2007-10-18 | Jfe Steel Kk | Method for producing chromium-containing ferritic steel sheet |
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Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1788102A (en) * | 2004-04-07 | 2006-06-14 | 新日铁住金不锈钢株式会社 | Ferritic stainless steel sheet with excellent formability, and its manufacturing method |
| CN101255532A (en) * | 2007-02-26 | 2008-09-03 | 新日铁住金不锈钢株式会社 | Ferrite series stainless steel plate having excellent formability with small roughness of machining surface and method for manufacturing same |
| CN101538683A (en) * | 2008-03-19 | 2009-09-23 | 宝山钢铁股份有限公司 | Ferritic stainless steel with excellent formability and manufacturing method thereof |
| CN101812641A (en) * | 2009-02-25 | 2010-08-25 | 宝山钢铁股份有限公司 | Ferrite stainless steel and manufacturing method thereof |
| CN101845595A (en) * | 2009-03-26 | 2010-09-29 | 宝山钢铁股份有限公司 | Ferritic stainless steel with good wrinkle resistance and production method thereof |
| KR20120073644A (en) * | 2010-12-27 | 2012-07-05 | 주식회사 포스코 | Ferritic stainless steel with good workability and method of manufacturing the same |
| CN102839328A (en) * | 2011-06-24 | 2012-12-26 | 宝山钢铁股份有限公司 | Ferritic stainless steel plate with high deep drawing quality and low anisotropy and preparation method of ferritic stainless steel plate |
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| KR101614606B1 (en) | 2016-04-22 |
| KR20160018953A (en) | 2016-02-18 |
| CN105803347B (en) | 2019-03-26 |
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