CN103045969B - A kind of corrosion-resistant steel of exempting from application - Google Patents
A kind of corrosion-resistant steel of exempting from application Download PDFInfo
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Abstract
The invention provides a kind of exempt from painting state under can be used under the high-sulfur high acid environment such as oil carrier oil cargo tank, Industrial Boiler pipeline, industrial chemicals tank corrosion-resistant steel, this product can reduce comprehensive acid corrosion that the pitting and deck that occur in oil cargo tank or side plate place occur, also can recommend or broadened application in the structure building of storage tank, production vessel, shipping tank car and controlling methodology of oil pipeline.These steel comprise Plate Steel, the type such as steel sheet and shaped steel, it contains C:0.003 ~ 0.07wt%, Si:0.001 ~ 0.3wt%, Mn:0.1 ~ 1.3wt%, below P:0.025wt%, Al:0.015 ~ 0.035wt%, N: be not more than 0.008wt%, Cu:0.15 ~ 0.30wt%, Sb:0.08 ~ 0.25wt% and S:0.007 ~ 0.025wt%, surplus is Fe and inevitable impurity, do not add the alloying element of the costlinesses such as Ni/Cr/Mo/Sn/W, the mixture that corrosion resistance nature relies on Cu-S-Sb to be formed, economical, under the complex corrosion environment of carried of crude oil and under high-sulfur high-acidity environment, still can exposedly use.
Description
Technical field
The present invention relates to a kind of corrosion-resistant steel of exempting from application, these steel can reduce the acid corrosion under the comprehensive acid corrosion and high-sulfur high-acidity environment that the pitting and deck that occur in oil cargo tank or side plate place occur, these steel comprise the types such as Plate Steel, steel sheet and shaped steel, and are suitable for modern cold and hot working and weldprocedure operation.
Background technology
In recent years, along with the continuous progress of China's economy, various boiler, tobacco, chemical industry transportation equipment constantly increase, and the performance of required steel is also more and more higher.In order to improve the work-ing life of steel, extension device life cycle, improve equipment dependability, the steel of manufacture need to have high acid corrosion-resistant and sulfur corrosion resistant performance.
Because the corrosive environment of crude oil carrier is relatively harsh in various corrosive environment, therefore illustrates the demand of these type of steel extremely urgent for crude oil carrier.
Petroleum demand was increasing in recent years, and the fuel feeding ratio of marine oil field increases increasingly, and Imported oil degree of dependence is also more and more stronger.Within 2010, domestic Crude oil from CNOOC output has reached 5,000 ten thousand tons, imported crude oil about 200,000,000 tons, and 90% relies on Oil Carrier Transportation, and therefore the strategic position of oil transportation at sea becomes more and more important.Existing oil carrier and oil cargo tank major part use A/D/EH32, A/D/EH36 level ship steel, can meet the requirement of intensity, toughness and the welding property in construction and use procedure.But the diversity due to oil composition and the complicacy containing multiple acidic corrosive media and shipbuilding technology and the underway various sea situation of oil carrier, adopt the oil cargo tank often seriously corroded that conventional ship slab is built, the life-span of oil carrier is shortened greatly, directly threatens the safety of carried of crude oil.
In order to improve the corrosion resistance nature of oil carrier oil cargo tank, suppressing to corrode most effective means is carry out primer painting, metal spraying at steel surface, steel and corrosive environment is isolated, in addition, makes regular check on the local corrosion degree that repairing also can reduce oil cargo tank.But from the actual protection of oil carrier oil cargo tank, the surface covered of oil cargo tank is huge, and about 5 ~ 10 years just need again to be coated with once, and therefore within oil carrier phase life, construction cost oil cargo tank being implemented to Coating and deck of boat replacing is high.In addition, in oil cargo tank, work condition environment is poor, and construction space is narrow, and regular repairing is sprayed paint and is also difficult to ensure the quality of whole oil cargo tank internal surface, and the defect that the deterioration for a long time of microscopic defect when local corrosion is often to construct and year produces is expanded for starting point.Therefore, the ship steel of the excellent corrosion resistance being highly resistant to oil cargo tank Special Corrosion medium is developed in urgent hope.The corrosion-resistant deck of boat of Study and Development oil cargo tank can reduce the construction of oil cargo tank, maintenance intervals and cost, can increase substantially safety in utilization and the reliability of oil cargo tank simultaneously.
At present, Nippon Steel Corporation (Nippon Steel, JFE, Sumitomo Metal Industries) has had the technology of relative maturity, has developed COT anti-corrosion steel plate, but each thinking difference, be briefly introduced at this.
(1) Nippon Steel
Nippon Steel releases the oil carrier corrosion-resisting steel NSGP-1 without the need to coating process the earliest, and VLCC peak number (Takamine) lower shoe that Mitsubishi Heavy Industries Ltd build in June, 2004 adopted.Nippon Steel has applied for multinomial patent to this, more representational have JP 2005-023421 and JP 2010-043342.JP 2005-023421 mainly adds Cu(0.01 ~ 1.5%), W/Mo(at least one), with limit Cr content≤0.1%, and control S, P content simultaneously.And JP 2010-043342 adds Ni/Co(at least one on the basis of above-mentioned patent) metal.
（2）JFE
2002 Co., Ltd. Mitsui merchantman (MOL) announce that within 2003, building up-to-date oil cargo tank upperdeck will adopt the NAC5 corrosion-resisting steel of JFE development, but effects on surface is carried out japanning and processes.The representational patent of JFE application has JP 2007-063610, JP 2007-291494, WO201008750 and WO2010074307.Main interpolation non-corrosive metal element W(0.001 ~ 0.5% in open patent 2007-063610).And open patent 2007-291494 mainly adds W(0.0001 ~ 0.5) and Cr(0.06 ~ 0.2%) two kinds of non-corrosive metals.Add non-corrosive metal Cu(0.008 ~ 0.35% in patent WO2010074307), Cr(0.1 ~ 0.5) and Sn(0.005 ~ 0.3).Patent WO2010074307 then expands patent WO2010087509 alloying element scope, add Cr(0.1 ~ 0.5), Cu(0.03 ~ 0.5) and W/Mo/Sn/Sb/Ni/Co at least one.
(3) Sumitomo Metal Industries
Sumitomo Metal Industries apply for a patent disclosed composition and mainly add non-corrosive metal element Ni, Cu and elements such as w, and limit Cr(≤0.1%), control S, P content.Such as, add Ni(0.01 ~ 3% in JP 2003-082435 patent) and Cu(0.01 ~ 2%), JP 2005-325439 is on the basis of JP 2003-082435 and with the addition of W(0.01 ~ 1%), and Ni, Cu and W content will meet relational expression (1) and (2).JP 2006-137963 is extend range more, thinks that Mo with W effect is similar, except Ni and Cu, can also select at least one in Mo and W two kinds of elements, and require that Ni, Cu, W and Mo should meet relational expression (3) and (4).JP 2007-270196, except adding non-corrosive metal element Ni and Cu, also adds Sn(0.01 ~ 0.2%).
(1-0.691×Cu)×(1-0.221×Ni)×(1-0.142×W)≤0.75 (1)
(1-0.444×Cu)×(1-0.156×Ni)×(1-0.63×W)≤0.80 (2)
(1-0.691×Cu)×(1-0.221×Ni)×(1-0.142×W)×(1-0.148×Mo)≤0.75 (3)
(1-0.444×Cu)×(1-0.156×Ni)×(1-0.63×W)×(1-0.178×Mo)≤0.80 (4)
From open source literature, three Iron And Steel Company's corrosion-resisting steel performances are all relatively good, and Nippon Steel's corrosion-resisting steel simulative corrosion test data are maximum, but mainly concentrate on lower shoe, and the test of lower shoe analog simulation and International Maritime Organizaton's recommend method basic simlarity.The open part upper and lower base plate simulative corrosion test data of Sumitomo company, the analog simulation test of upperdeck is consistent with International Maritime Organizaton recommend method, and lower shoe is then different.JFE discloses the corrosion simulation data after corrosion-resisting steel coating, does not find exposed use corrosion-resistant steel testing data, and the test of the analog simulation of upperdeck is consistent with International Maritime Organizaton recommend method, and lower shoe is then different.
In real ship construction, the NSGP-1 corrosion-resisting steel of Nippon Steel has been applied in the lower shoe on VLCC peak number, and not carrying out coating process, the JFE-SIPTM-OT of JFE development has also built for real ship and has not carried out coating process, and Sumitomo Metal Industries' corrosion-resisting steel yet there are no the report of real ship application.
Summary of the invention
In order to solve the problem, the invention provides a kind of corrosion-resistant steel, the chemical composition of described corrosion-resistant steel is: C:0.003 ~ 0.07wt%, Si:0.001 ~ 0.3wt%, Mn:0.1 ~ 1.3wt%, below P:0.025wt%, Al:0.015 ~ 0.035wt%, N: be not more than 0.008wt%, Cu:0.15 ~ 0.30wt%, Sb:0.08 ~ 0.25wt%, S:0.007 ~ 0.025wt%, surplus is Fe and inevitable impurity.Expensive other corrosion-resistant elements such as W, Cr, Ni, Mo are not added according to corrosion-resistant steel of the present invention.
Preferably, described corrosion-resistant steel also comprises at least one in Ca:0.002 ~ 0.005wt% and REM:0.0002 ~ 0.010wt%.
Preferably, described corrosion-resistant steel also comprises Nb:0.01 ~ 0.06wt%; Few a kind of in Ti:0.005 ~ 0.03wt% and B:0.0005 ~ 0.002wt%.
Corrosion-resistant steel according to the present invention has excellent erosion resistance, may be used for oil carrier oil cargo tank.In addition, steel of the present invention can also to be exempted under painting state for high-sulfur high acid environment such as Industrial Boiler pipeline, industrial chemicals tanks, also can recommend or broadened application in the structure building of storage tank, production vessel, shipping tank car and controlling methodology of oil pipeline.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the cross section that crude oil tank is shown.
Fig. 2 is the schematic diagram of growing up that pitting corrosion is shown.
Fig. 3 illustrates the schematic diagram carrying out comprehensive accelerated corrosion test according to the embodiment of the present invention 1 pair of steel.
Fig. 4 be illustrate carry out comprehensive accelerated corrosion test according to the embodiment of the present invention 1 pair of steel after the photo that obtains.
Fig. 5 illustrates the schematic diagram carrying out local accelerated corrosion test according to the embodiment of the present invention 2 pairs of steel.
Fig. 6 illustrates to carry out the photo that obtains after the accelerated corrosion test of local according to the embodiment of the present invention 2 pairs of steel.
Embodiment
Fig. 1 is the schematic diagram of the cross section of crude oil tank.The backplate surface of oil tanker crude oil tank piles up the mud containing iron rust, be detained the high density salt solution from crude separation thereon.Have in crude oil tank in order to the explosion-proof and rare gas element imported in crude oil is (such as, containing CO
2: 13 volume %, O
2: 5 volume %, SO
2: 0.01 volume % etc.) and from crude oil occur H
2s gas is very severe corrosive environment.
The oil film of crude oil heavy ingredient covering base plate has non-corrosibility, but the crude oil washing/COW regularly carried out due to the heap sum of mud, if a part for oil film comes off, then form the low exposed part of protectiveness, thus at this position, pitting corrosion occurs.In saltwater environment, oil film defect part becomes the anode of locality, and mud and sound oil film become negative electrode, form galvanic corrosion system, pitting corrosion is grown up.
Factual survey result shows: except containing except the solids component in crude oil in mud, also piles up the materials such as the iron rust that generates in unrefined oil tank and sulphur.It is that 0.85 ~ 4(is lower than outside pH4 ~ 8 that the pitting corrosion inside of base plate also exists pH) chloride soln.Due to the existence of low pH solution, the hydrogen facilitating cathodic reaction reacts, so facilitate corrosion.
Therefore; the mechanism of corrosion of COT base plate can brief overview be: there is the corrosion necessary moisture of electrochemical reaction (salt solution of high density) bottom COT; but backplate surface defines the tectum with the oil reservoir cutting off environmental activity, steel plate obtains protection from corrosive environment.But due to some reasons, oil reservoir locality is damaged, and under the effect of chloride soln damaging monomer S or the low pH entered in crude oil from locality, accelerates steel plate local corrosion, and then reaches pitting corrosion.
Containing there is enough S(> 0.007wt% in Cu steel) time, can significantly improve the corrosion resistance nature of steel, reason is at steel surface Precipitation Cu
2s overlay film; Significantly can provide the corrosion resistance nature of steel when Cu and Sb coexists, reason is for generating Cu
2sb overlay film.
Consider the complicacy of oil cargo tank corrosive environment, two kinds of Corrosion Resistant Mechanisms are carried out compound by the present invention, namely adopt the mode of Cu-S-Sb compound to carry out Composition Design to steel grade, do not add other corrosion-resistant element (as W, Cr, Ni, Mo, Sn etc.), and S is treated as beneficial element.
Namely, the invention provides a kind of can the economical oil carrier corrosion resistant steel for cargo oil tanks material of exposed use, it contains C:0.003 ~ 0.07wt%, Si:0.001 ~ 0.3wt%, Mn:0.1 ~ 1.3wt%, below P:0.025wt%, Al:0.015 ~ 0.035wt%, N: be not more than 0.008wt%, Cu:0.15 ~ 0.30wt%, Sb:0.08 ~ 0.25wt%, S:0.007 ~ 0.025wt%, surplus is Fe and inevitable impurity.Corrosion-resistant steel of the present invention does not add expensive other corrosion-resistant elements such as W, Cr, Ni, Mo.
In addition, steel of the present invention can also comprise at least one in Ca:0.002 ~ 0.005wt% and REM:0.0002 ~ 0.010wt%.
Alternatively, consider the needs of the needs that intensity improves and Large Heat Input Welding, steel of the present invention can also comprise at least one in Nb:0.01 ~ 0.06wt%, Ti:0.005 ~ 0.03wt% and B:0.0005 ~ 0.003wt%.
According to corrosion-resistant steel of the present invention, even if under the complex environment of carried of crude oil, still exposedly can to use, and economical, obviously can reduce the maintenance cost of oil carrier and work-ing life and safe reliability.
At least one in Ca:0.002 ~ 0.005wt% and REM:0.0002 ~ 0.010wt% and at least one in Nb:0.01 ~ 0.06wt%, Ti:0.005 ~ 0.03wt% and B:0.0005 ~ 0.003wt% can be comprised according to corrosion-resistant steel of the present invention simultaneously.
As follows according to the Composition Design foundation of corrosion-resistant steel of the present invention:
C：0.003~0.07wt%。Carbon is the element of the intensity improving steel, in the present invention, reaching the level being equivalent to DH32/DH36 to make armor plate strength, needing the carbon containing more than 0.003wt%, if but containing more than 0.16wt%C, the toughness of weldability and welded heat affecting zone can reduce (requiring Ceq≤0.38).Therefore, obdurability matching properties is considered, preferably 0.003 ~ 0.07wt%C scope.
Si：0.001~0.3wt%。Si adds usually used as reductor, improves the intensity of steel simultaneously, needs containing 0.01wt%Si in the present invention, if but addition more than 0.5wt%, then steel plate toughness can be made to reduce.In addition, Si forms corrosion-resistant overlay film under sour environment, thus improves the effect of erosion resistance.In order to obtain this effect, preferably 0.10 ~ 0.25wt% scope.
Mn：0.1~1.3wt%。Mn can improve steel strength, in order to obtain the intensity expected in the present invention, needs the Mn of interpolation 0.8 ~ 1.1wt%, if but add excessive Mn, carbon equivalent can be made to increase, reduce toughness and the weldability of steel, therefore, preferably 0.8 ~ 1.1wt%Mn.
Below P:0.025wt%.The segregation of P on crystal boundary, can make the toughness of steel reduce, therefore make it to reduce as much as possible, particularly in steel P content more than 0.025wt%, toughness can be made significantly to decline, if but reduce P content and be less than 0.005wt% scope and can make cost increase again, therefore preferably P content at 0.008 ~ 0.015wt%.
Al：0.015~0.035wt%。Al be in steel as the element that reductor adds, be greater than 0.05wt% and strand ductility can be made to reduce, therefore preferred 0.015 ~ 0.035wt%.
N：≤0.008wt%。N element too high levels in steel, can cause embrittlement of grain boundaries, affects steel impact property, therefore for ensureing product performance, preferred N≤0.008wt%.
Cu：0.15~0.30wt%。Cu is containing H
2contribute in the environment of S improving comprehensive erosion resistance, but to the raising limited efficiency of resistance to local corrosion, and interpolation Cu can cause hot workability significantly to reduce, and therefore adds Cu in the present invention, but limits its content at 0.15 ~ 0.30wt%
Sb：0.08~0.25wt%。Sb by with Cu and S compound, can Cu be formed
2s overlay film, Cu
2sb and Cu
3sb
2overlay film, can improve erosion resistance so comprehensively.Interpolation is less than 0.07wt% and can not obtains above-mentioned effect, if add saturated more than the above-mentioned effect of 0.30wt%, and processibility can be made to reduce, therefore preferably the interpolation scope of Sb is 0.08 ~ 0.25wt%
S：0.007~0.025wt%。It is generally acknowledged that S can form MnS with Mn, the initial region occurred of corrosion can be become, affect the corrosion resistance nature of steel plate, but in the present invention, S and Cu compound can form Cu
2s overlay film, improves the erosion resistance of steel plate, and therefore preferably S content is 0.007 ~ 0.025wt%.
Ca:0.002 ~ 0.005wt% or REM:0.0002 ~ 0.010wt%.Ca and REM has the effect controlling inclusion morphology, thus improves steel ductility and toughness.If Ca content is less than 0.002wt%, DeGrain, if but more than 0.005wt%Ca, then the solubleness in this steel grade reaches capacity, therefore add Ca preferably 0.002 ~ 0.005wt% or REM:0.0002 ~ 0.010wt%.
Nb：0.01~0.06wt%。The element that Nb is intensity in order to improve steel and adds, if be less than 0.01wt%, its DeGrain, on the other hand, if be greater than 0.1wt%, toughness reduces, and therefore, the content of preferred Nb is at 0.02 ~ 0.06wt%.
Ti：0.005~0.03wt%。The element that Ti is intensity in order to improve steel and toughness and adds, if be less than the above-mentioned DeGrain of 0.005wt%, if be greater than 0.05wt%, can generate the inclusion of many Ti, affect steel performance, therefore preferably add Ti content at 0.015 ~ 0.03wt%.
B：0.0005~0.003wt%。The element that B is intensity in order to improve steel and adds, in view of the present invention develops the strength range of steel, and if add B ultrasonic and cross 0.01wt%, then toughness reduces, and therefore adds B preferred content at 0.0005 ~ 0.003wt%.
Provided below is specific embodiments of the invention.Adopt the composition of steel in table 1 below to be smelted into steel in vacuum induction furnace, do not add the metal that W, Cr, Ni, Mo, Sn etc. are expensive, to reduce production cost.After molten steel is cooled to normal temperature after watering into ingot casting, be heated to 1180 DEG C, subsequent hot, finish to gauge end temp is 830 DEG C, and final finished thickness is 7mm.
Table 1 smelting molten steel chemical composition, wt%
| Numbering | C | Si | Mn | P | Al | S | Cu | Sb | Ti | Ca | Nb | B | REM |
| 1 | 0.003 | 0.1378 | 0.1491 | 0.0043 | 0.01 | 0.0079 | 0.26 | 0.221 | 0.0114 | 0.0027 | 0 | 0 | 0 |
| 2 | 0.032 | 0.3965 | 0.9201 | 0.0077 | 0.0206 | 0.0073 | 0.30 | 0.134 | 0.023 | 0.003 | 0 | 0.0029 | 0.0008 |
| 3 | 0.045 | 0.052 | 0.8744 | 0.0061 | 0.0303 | 0.0026 | 0.30 | 0.121 | 0 | 0.0028 | 0.01 | 0.0023 | 0.0056 |
| 4 | 0.014 | 0.2394 | 0.9664 | 0.0069 | 0.0348 | 0.0105 | 0.30 | 0.126 | 0.0138 | 0.0029 | 0.025 | 0 | 0 |
| 5 | 0.062 | 0.234 | 1.122 | 0.0060 | 0.0350 | 0.0181 | 0.19 | 0.101 | 0 | 0 | 0 | 0 | 0 |
| 6 | 0.025 | 0.1891 | 1.168 | 0.0036 | 0.0289 | 0.0231 | 0.16 | 0.120 | 0 | 0.0038 | 0 | 0.0020 | 0 |
Intercept the square lab scale print of 25mm × 60mm × 5mm from the steel band after hot rolling, surface working smooth finish is
after effects on surface carries out de-oiling skimming treatment, consider the complicacy of crude oil corrosive environment, carried out the exposed accelerated corrosion test of steel plate of high temperature and low temperature respectively, to investigate respectively comprehensively and local corrosion resistance nature.
Comprehensive accelerated corrosion test in embodiment 160 DEG C of 40wt% sulfuric acid 5wt% sulphur solution
Coupons is put into the 40wt% sulphuric acid soln of 60 DEG C, add the analytical pure sulphur of solution quality percentage ratio 5wt%, thermostat container is put in Thoughs sealing, as shown in Figure 3.Take out after 4 hours, dry after clean surface resultant, weigh, calculate average corrosion rate, test-results is shown in Table 2, and after corrosion, pattern is shown in Fig. 4, and wherein, (a) in Fig. 4 is the photo of contrast sample, and (b) in Fig. 4 is the photo according to sample 2 of the present invention.
Comprehensive accelerated corrosion test result in table 2 60 DEG C of 40wt% sulfuric acid
| Numbering | Average corrosion rate, g/m 2·h | Contrast sample | Average corrosion rate, g/m 2·h | Relative corrosion rate, wt% |
| 1 | 22.93 | E36 | 994.1 | 2.31% |
| 2 | 61.53 | E36 | 2044.4 | 3.01% |
| 3 | 67.19 | E36 | 2347 | 2.86% |
| 4 | 389.5 | E36 | 2035.9 | 19.13% |
| 5 | 35.68 | E36 | 1998.4 | 1.79% |
| 6 | 42.87 | E36 | 2231.4 | 1.92% |
As known from Table 2, steel of the present invention are when exposed use, very low with the relative corrosion rate of E36, and steel of the present invention comprehensive excellent anti-corrosion performance under exposed service condition is described.
Local accelerated corrosion test in embodiment 2 normal temperature 23 DEG C of 40wt% sulfuric acid sulphur solution
Is sealed with wax in the coupons surface of above-mentioned machine-shaping, dig out the circular hole of diameter 5mm on its surface, insert analytical pure sulphur wherein, be placed in the 40wt% sulfuric acid of normal temperature 23 DEG C, as shown in Figure 5.Sample is taken out after 72 hours, dry after surface cleaning is clean, weigh, measure its average corrosion rate.Test-results is in table 3, and after corrosion, sample pattern is shown in Fig. 6.Wherein, (a) in Fig. 6 is the photo of contrast sample, and (b) in Fig. 6 is the photo according to sample 3 of the present invention.
Table 3 normal temperature local accelerated corrosion result
| Numbering | Average corrosion rate, g/m 2·h | Contrast sample | Average corrosion rate, g/m 2·h | Relative corrosion rate, wt% |
| 1 | 29.93 | E36 | 294.15 | 10.18% |
| 2 | 26.52 | E36 | 274.22 | 9.67% |
| 3 | 32.2 | E36 | 251.97 | 12.78% |
| 4 | 35.32 | E36 | 283.71 | 12.45% |
| 5 | 42.46 | E36 | 285.32 | 14.88% |
| 6 | 34.64 | E36 | 264.62 | 13.09% |
As can be seen from two test-results of the present invention, no matter be in high-temperature condition or normal temperature situation, under the exposed service condition of steel of the present invention, the corrosion resistance nature of resistance to general corrosion and local corrosion is all very good, the requirement of the resistance to pitting generation of oil carrier oil cargo tank base plate and deck or the resistance to comprehensive acid corrosion of side plate under working condition can be met, its exposed applying to also can be had good corrosion resistance nature under chemical industry equipment, Industrial Boiler, tobacco industry etc. have sulfuric acid dew point corrosion environment.
In addition, through test of many times, the repeatability of its result is fine.
Describe the present invention in detail with reference to specific embodiment, but the present invention is not limited thereto.When not departing from the scope of claim of the present invention, the amendment in various forms and details can be carried out to the present invention.
Claims (3)
1. exempt from the corrosion-resistant steel of application for one kind, it is characterized in that: described corrosion-resistant steel contains C:0.003 ~ 0.07wt%, Si:0.001 ~ 0.3wt%, Mn:0.1 ~ 1.3wt%, below P:0.025wt%, Al:0.015 ~ 0.035wt%, N: be not more than 0.008wt%, Cu:0.15 ~ 0.26wt%, Sb:0.08 ~ 0.25wt%, S:0.0181 ~ 0.025wt%, surplus is Fe and inevitable impurity.
2. corrosion-resistant steel as claimed in claim 1, it is characterized in that, described corrosion-resistant steel also comprises at least one in Nb:0.01 ~ 0.06wt%, Ti:0.005 ~ 0.03wt% and B:0.0005 ~ 0.003wt%.
3. corrosion-resistant steel as claimed in claim 1 or 2, is characterized in that, described corrosion-resistant steel is also containing at least one in Ca:0.002 ~ 0.005wt% and REM:0.0002 ~ 0.010wt%.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101128612A (en) * | 2005-02-28 | 2008-02-20 | 新日本制铁株式会社 | Steel excellent in resistance to sulfuric acid dew point corrosion |
| CN101139683A (en) * | 2007-09-12 | 2008-03-12 | 钢铁研究总院 | Air corrosion resistant steel |
| CN101831598A (en) * | 2010-05-26 | 2010-09-15 | 马鞍山钢铁股份有限公司 | Low alloy steel for resisting sulfuric acid dew point corrosion and production method thereof |
| CN101928886A (en) * | 2010-07-15 | 2010-12-29 | 南京钢铁股份有限公司 | Corrosion resistant steel for cargo oil tanks and application thereof |
| CN102264937A (en) * | 2008-12-24 | 2011-11-30 | 杰富意钢铁株式会社 | Corrosion-resistant steel material for crude oil tanker |
-
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101128612A (en) * | 2005-02-28 | 2008-02-20 | 新日本制铁株式会社 | Steel excellent in resistance to sulfuric acid dew point corrosion |
| CN101139683A (en) * | 2007-09-12 | 2008-03-12 | 钢铁研究总院 | Air corrosion resistant steel |
| CN102264937A (en) * | 2008-12-24 | 2011-11-30 | 杰富意钢铁株式会社 | Corrosion-resistant steel material for crude oil tanker |
| CN101831598A (en) * | 2010-05-26 | 2010-09-15 | 马鞍山钢铁股份有限公司 | Low alloy steel for resisting sulfuric acid dew point corrosion and production method thereof |
| CN101928886A (en) * | 2010-07-15 | 2010-12-29 | 南京钢铁股份有限公司 | Corrosion resistant steel for cargo oil tanks and application thereof |
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| CN103045969A (en) | 2013-04-17 |
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