EP0256429A1 - Acier de construction résistant à la fissuration par corrosion sous contraintes - Google Patents

Acier de construction résistant à la fissuration par corrosion sous contraintes Download PDF

Info

Publication number: EP0256429A1
Authority: EP; European Patent Office
Prior art keywords: corrosion cracking; stress corrosion; titanium; carbon; steel
Prior art date: 1986-08-14
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.): Granted

Application number

EP87111293A

Other languages

German (de)

English (en)

Other versions

EP0256429B1 (fr

Inventor

Lutz Dr. Meyer

Ludwig Dr. Hachtel

Günter Robusch

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

Thyssen Stahl AG

Original Assignee

Thyssen Stahl AG

Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)

1986-08-14

Filing date

1987-08-05

Publication date

1988-02-24

1987-08-05 Application filed by Thyssen Stahl AG filed Critical Thyssen Stahl AG

1987-08-05 Priority to AT87111293T priority Critical patent/ATE58183T1/de

1988-02-24 Publication of EP0256429A1 publication Critical patent/EP0256429A1/fr

1990-11-07 Application granted granted Critical

1990-11-07 Publication of EP0256429B1 publication Critical patent/EP0256429B1/fr

2007-08-05 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

Links

238000005260 corrosion Methods 0.000 title claims abstract description 47
230000007797 corrosion Effects 0.000 title claims abstract description 47
238000005336 cracking Methods 0.000 title claims abstract description 41
229910000831 Steel Inorganic materials 0.000 title description 60
239000010959 steel Substances 0.000 title description 60
IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 42
239000010936 titanium Substances 0.000 claims abstract description 38
RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract description 33
229910052719 titanium Inorganic materials 0.000 claims abstract description 33
OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 30
229910052799 carbon Inorganic materials 0.000 claims abstract description 30
229910052757 nitrogen Inorganic materials 0.000 claims abstract description 21
VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims abstract description 17
229910052804 chromium Inorganic materials 0.000 claims abstract description 17
239000011651 chromium Substances 0.000 claims abstract description 17
XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 14
229910002651 NO3 Inorganic materials 0.000 claims abstract description 14
NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 claims abstract description 14
PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 12
OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims abstract description 11
229910052698 phosphorus Inorganic materials 0.000 claims abstract description 11
239000011574 phosphorus Substances 0.000 claims abstract description 11
229910000746 Structural steel Inorganic materials 0.000 claims abstract description 10
PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims abstract description 8
NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims abstract description 8
229910052748 manganese Inorganic materials 0.000 claims abstract description 8
239000011572 manganese Substances 0.000 claims abstract description 8
229910052742 iron Inorganic materials 0.000 claims abstract description 7
229910052710 silicon Inorganic materials 0.000 claims abstract description 7
239000010703 silicon Substances 0.000 claims abstract description 7
XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 6
229910052782 aluminium Inorganic materials 0.000 claims abstract description 6
229910052759 nickel Inorganic materials 0.000 claims abstract description 6
239000012535 impurity Substances 0.000 claims abstract description 5
238000012360 testing method Methods 0.000 claims description 12
239000000203 mixture Substances 0.000 claims description 8
239000000463 material Substances 0.000 claims description 7
229910052717 sulfur Inorganic materials 0.000 claims description 7
239000011593 sulfur Substances 0.000 claims description 7
238000009835 boiling Methods 0.000 claims 1
238000009997 thermal pre-treatment Methods 0.000 claims 1
239000005864 Sulphur Substances 0.000 abstract 1
239000004411 aluminium Substances 0.000 abstract 1
239000000243 solution Substances 0.000 description 9
XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
229910052758 niobium Inorganic materials 0.000 description 6
239000010955 niobium Substances 0.000 description 6
GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 description 6
MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 6
238000004519 manufacturing process Methods 0.000 description 5
238000003466 welding Methods 0.000 description 5
XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 4
238000005275 alloying Methods 0.000 description 4
230000015572 biosynthetic process Effects 0.000 description 4
230000006378 damage Effects 0.000 description 4
230000000694 effects Effects 0.000 description 4
229910045601 alloy Inorganic materials 0.000 description 3
239000000956 alloy Substances 0.000 description 3
230000008901 benefit Effects 0.000 description 3
-1 Chromium carbides Chemical class 0.000 description 2
ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 2
239000000654 additive Substances 0.000 description 2
239000003513 alkali Substances 0.000 description 2
230000009286 beneficial effect Effects 0.000 description 2
230000000052 comparative effect Effects 0.000 description 2
239000003792 electrolyte Substances 0.000 description 2
238000009422 external insulation Methods 0.000 description 2
230000006872 improvement Effects 0.000 description 2
238000009413 insulation Methods 0.000 description 2
238000000034 method Methods 0.000 description 2
229910052750 molybdenum Inorganic materials 0.000 description 2
239000011733 molybdenum Substances 0.000 description 2
238000012545 processing Methods 0.000 description 2
239000000126 substance Substances 0.000 description 2
229910000851 Alloy steel Inorganic materials 0.000 description 1
RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
229910019932 CrNiMo Inorganic materials 0.000 description 1
UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
229910000617 Mangalloy Inorganic materials 0.000 description 1
229910001069 Ti alloy Inorganic materials 0.000 description 1
239000003929 acidic solution Substances 0.000 description 1
230000000996 additive effect Effects 0.000 description 1
238000013459 approach Methods 0.000 description 1
230000008859 change Effects 0.000 description 1
239000000567 combustion gas Substances 0.000 description 1
238000011109 contamination Methods 0.000 description 1
230000008602 contraction Effects 0.000 description 1
229910052802 copper Inorganic materials 0.000 description 1
239000010949 copper Substances 0.000 description 1
238000010586 diagram Methods 0.000 description 1
230000004069 differentiation Effects 0.000 description 1
230000002349 favourable effect Effects 0.000 description 1
238000010438 heat treatment Methods 0.000 description 1
229910052739 hydrogen Inorganic materials 0.000 description 1
239000001257 hydrogen Substances 0.000 description 1
230000001771 impaired effect Effects 0.000 description 1
238000011835 investigation Methods 0.000 description 1
WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
230000007246 mechanism Effects 0.000 description 1
230000007935 neutral effect Effects 0.000 description 1
150000004767 nitrides Chemical class 0.000 description 1
230000000246 remedial effect Effects 0.000 description 1
229910001220 stainless steel Inorganic materials 0.000 description 1
230000009897 systematic effect Effects 0.000 description 1
238000005496 tempering Methods 0.000 description 1
230000001960 triggered effect Effects 0.000 description 1

Images

Classifications

- 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
- C22C38/28—Ferrous alloys, e.g. steel alloys containing chromium with titanium or zirconium

Definitions

the invention relates to a weldable structural steel with high resistance to intergranular stress corrosion cracking, especially in nitrate solutions, and good weldability.
Damage due to intergranular stress corrosion cracking occurs in high-performance wind heaters that are operated at very high temperatures. This damage is triggered as a result of the increased formation of nitrogen oxides in the hot wind heated to temperatures of over 1,300 ° C and the formation of a nitrate-containing electrolyte when the wind moisture condenses on the system components of the hot water heater, which are usually made of unalloyed or low-alloyed steels.
a remedial measure against damage due to stress corrosion cracking which has proven itself for two decades, is the application of external heat insulation, the so-called outer insulation, by means of which the sheet temperature can be raised to such an extent that the condensate that causes the stress corrosion cracking is not separated.
high-alloy steels such as rust-proof CrNiMo steels
rust-proof CrNiMo steels has also proven itself, for example for the particularly exposed high-stress compensators in the line systems of the hot water heaters or as a support material for clad sheets.
niobium is lower than carbon and nitrogen. Chromium carbides and carbonitrides must also necessarily form. Titanium is mentioned as another carbide and nitride forming element. However, it should not be as effective as niobium.
DE-PS 28 19 227 describes a manganese steel which is to be used in the normalized state as a material for such components which are exposed to alkaline, neutral or weakly acidic solutions, in particular for hot air heaters.
This steel contains a relatively high carbon content of up to 0.18% and, in addition to manganese, niobium and copper, coordinated phosphorus and sulfur contents, to avoid intercrystalline hydrogen-induced cracks.
the steel can also optionally contain nickel, chromium and titanium. A complicated procedure is prescribed for the welding of steel, in order to achieve a higher resistance of welded structures against stress corrosion cracking and against other crack formation.
the invention is based on the object of proposing a weldable structural steel which can be welded according to a simple method and which, with little effort for alloy elements, has a high resistance to stress corrosion cracking, in particular in nitrate solutions, and has good toughness and formability.
This task is solved by a structural steel with high resistance to intergranular stress corrosion cracking, especially in nitrate solutions, and good weldability with the following composition (in% by mass): 0.01 to 0.04% carbon up to 0.012% nitrogen 0.08 to 0.22% titanium with the requirement Ti ⁇ 3.5 (C + N) 0.2 to 2.5% manganese 2.0 to 5.5% chromium 0.01 to 0.10% aluminum up to 0.5% silicon up to 1.0% nickel up to 0.02% phosphorus up to 0.02% sulfur Balance iron and unavoidable impurities.
a preferred composition is a structural steel according to claim 1, consisting of 0.01 to 0.02% carbon up to 0.005% nitrogen 0.08 to 0.15% titanium with the requirement Ti ⁇ 3.5 (C + N) 0.2 to 2.0% manganese 2.5 to 5.5% chromium 0.01 to 0.10% aluminum up to 0.5% silicon up to 0.01% phosphorus up to 0.01% sulfur Balance iron and unavoidable impurities.
the titanium additive according to the invention has proven to be particularly effective, in combination with the chromium content of 2.0 to 5.5% provided according to the invention, to provide a high level of security against stress corrosion cracking, in particular under the conditions that characterize hot air heaters.
a chromium content of less than 2% has proven to be ineffective. If the chromium content is increased above 5.5%, the workability of the steel is increasingly impaired and the costs increase.
titanium carbide compound one atom of titanium and one atom of carbon are bonded to one another.
a stoichiometric mass ratio of 4: 1 is required because of the atomic weight of 48 for titanium and 12 for carbon, ie that for the stoichiometric Setting a certain carbon content requires at least four times the mass content of titanium. If, like the steel according to the invention, carbon and nitrogen are bonded together by titanium, stoichiometric setting results in a somewhat lower stoichiometric ratio because of the higher atomic weight of nitrogen of 14. In order to ensure the stable bonding of the interstitial atoms of carbon and nitrogen, the required titanium content must therefore be at least 3.5 times higher than the sum of the carbon and nitrogen contents.
titanium is an alloying element that, with sufficient concentration, taking into account the carbon and nitrogen contents, can bind the phosphorus in the steel or at least severely restrict its activity. According to the invention, the harmful influence of phosphorus is therefore suppressed or eliminated with a titanium content which is over-stoichiometric with respect to the sum of carbon and nitrogen.
a content is according to the invention of at most 0.02% by weight. A higher phosphorus content would increase the undesirable tendency to stress corrosion cracking.
the sulfur content is also at most 0.02% by weight. A higher sulfur content affects the workability during welding and forming and can also undesirably set part of the titanium alloy element.
the steel according to the invention contains 0.2 to 2.5% manganese.
a lower manganese content deteriorates the toughness and the surface quality of the sheet.
Manganese contents of more than 2.5% by weight make metallurgical production more difficult and increase costs without causing any appreciable improvement in properties.
nickel can be added up to 1.0%.
a higher nickel content does not further improve the toughness, but makes the steel considerably more expensive.
Aluminum is contained within the specified limits due to the manufacturing process.
the silicon content is limited to 0.5%. A higher silicon content can affect welding behavior and brittle fracture protection.
the alloying costs are significantly lower compared to similar steels, for example the preferred steels of DE-PS 29 07 152
the steel according to the invention already has excellent resistance to stress corrosion cracking in the normalized state and therefore does not require any more expensive tempering treatment
the toughness and formability of the steel according to the invention are similar to the properties of conventional structural steels, such as that of the St 52, -
the steel according to the invention shows considerable advantages over similar conventional high-strength structural steels.
neither preheating, high a certain seam structure, nor thermal post-treatment is required. - the course of hardness in the heat affected zone is flat, - the security against cold cracks is very good, - The deformability of the welded joint is high.
the economic advantage for the manufacturer and operator of hot-water systems or similar units becomes particularly clear when using the steel according to the invention, because the measures which have been necessary to date against the occurrence of stress corrosion cracking, such as external insulation of the hot-water heater or the use of expensive stainless austenitic steels, spare.
the steel according to the invention is also suitable for components of heat exchangers, as well as of furnaces, boilers, containers, vessels and pipelines, which are particularly exposed to nitrate solutions.
Table 1 shows the chemical composition of the steels examined.
the comparative steel A is a known unalloyed steel and the comparative steels B and C are known alloyed steels with different contents of chromium and / or titanium.
the steel D falls in the range of DE-PS 29 07 152.
the steels E1 and E2 are composed according to the invention.
Table 2 shows the tensile strength, yield strength and elongation at break of the investigated steels and the behavior of the steels towards stress corrosion cracking when tested with a constant strain rate by specifying the fracture constriction and when testing under constant load by specifying the service life until fracture.
the conditions of the two stress crack corrosion tests at constant strain rate and constant load are detailed in the lower part of Table 2.
the tempered state was also examined in order to enable a comparison in both heat treatment states.
the values determined show the improved resistance of the steels E1 and E2 according to the invention to stress corrosion cracking.
the contraction of the fracture after constant elongation represents a much sharper criterion than the service life after constant stress.
the differentiation in favor of the steel according to the invention therefore becomes highly significantly clearer in the first-mentioned test criterion. Often only the milder test conditions with constant load are discussed in the literature.
Figure 1 shows the results of the test for resistance to stress corrosion cracking, expressed in the fracture constriction of all the steels examined.
Electrolyte composition 10 g / l NO ; Temperature: 95 ° C; Strain rate: 1.8 x 10 ⁇ 7 / s; pH: 4.5 or 3.0.
the diagram shows the improvement in the resistance to stress corrosion cracking of the steels E1 and E2 according to the invention.
Figure 2 shows the appearance of specimens tested for stress corrosion cracking. The degree of constriction as a measure of the resistance to stress corrosion cracking can be clearly seen.
Figure 3 are microscopic images from the surface area of the intercrystalline stress crack corrosion-tested samples are reproduced. This shows the difference in the mechanism of structural change caused by the corrosion medium combined with mechanical tensile stress.
Figure 3a shows a crack that was created under the test conditions with reference steel A.
Figures 3b and 3c make it clear for the steel E2 according to the invention in a normalized or tempered state that the classic destruction by stress corrosion cracking does not occur here.

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Chemical & Material Sciences (AREA)
Engineering & Computer Science (AREA)
Materials Engineering (AREA)
Mechanical Engineering (AREA)
Metallurgy (AREA)
Organic Chemistry (AREA)
Heat Treatment Of Steel (AREA)
Chemical Or Physical Treatment Of Fibers (AREA)
Moulds For Moulding Plastics Or The Like (AREA)
Prevention Of Electric Corrosion (AREA)
Secondary Cells (AREA)

EP87111293A 1986-08-14 1987-08-05 Acier de construction résistant à la fissuration par corrosion sous contraintes Expired - Lifetime EP0256429B1 (fr)

Priority Applications (1)

Application Number	Priority Date	Filing Date	Title
AT87111293T ATE58183T1 (de)	1986-08-14	1987-08-05	Spannungsrisskorrosionsbestaendiger baustahl.

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
DE3627668		1986-08-14
DE3627668A DE3627668C1 (de)	1986-08-14	1986-08-14	Gut schweissbaren Baustahl mit hoher Bestaendigkeit gegen Spannungsrisskorrosion

Publications (2)

Publication Number	Publication Date
EP0256429A1 true EP0256429A1 (fr)	1988-02-24
EP0256429B1 EP0256429B1 (fr)	1990-11-07

Family

ID=6307425

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP87111293A Expired - Lifetime EP0256429B1 (fr)	1986-08-14	1987-08-05	Acier de construction résistant à la fissuration par corrosion sous contraintes

Country Status (7)

Country	Link
US (1)	US4919885A (fr)
EP (1)	EP0256429B1 (fr)
JP (1)	JPS63105950A (fr)
KR (1)	KR880003024A (fr)
AT (1)	ATE58183T1 (fr)
DE (2)	DE3627668C1 (fr)
ES (1)	ES2018801B3 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JPH08946B2 (ja) *	1988-08-19	1996-01-10	株式会社神戸製鋼所	耐食性に優れた吸収式熱機器用鋼材および管
RU2135622C1 (ru) *	1996-12-16	1999-08-27	Ниппон Стил Корпорейшн	Сталь, имеющая высокую ударную вязкость в зоне термического воздействия при сварке
US6149862A (en) *	1999-05-18	2000-11-21	The Atri Group Ltd.	Iron-silicon alloy and alloy product, exhibiting improved resistance to hydrogen embrittlement and method of making the same
US6737018B2 (en) *	2001-01-16	2004-05-18	Jfe Steel Corporation	Corrosion-resistant chromium steel for architectural and civil engineering structural elements
EP1794486B1 (fr) *	2004-09-28	2011-04-06	Gall & Seitz Systems GmbH	Tuyau a paroi double
DE102007005154B4 (de) *	2007-01-29	2009-04-09	Thyssenkrupp Vdm Gmbh	Verwendung einer Eisen-Chrom-Aluminium-Legierung mit hoher Lebensdauer und geringen Änderungen im Warmwiderstand
US10639719B2 (en)	2016-09-28	2020-05-05	General Electric Company	Grain boundary engineering for additive manufacturing

Citations (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US2315156A (en) *	1941-10-10	1943-03-30	Clifford P Larrsbee	Low-alloy corrosion-resistant steel
FR1333278A (fr) *	1962-08-29	1963-07-26	Yawata Iron & Steel Co	Rail ayant une résistance à la traction élevée et résistant à la corrosion
FR2418277A1 (fr) *	1978-02-24	1979-09-21	Nippon Steel Corp	Plaques en acier pour structure hautement resistantes a la fissuration par corrosion due au nitrate
GB1568616A (en) *	1977-09-02	1980-06-04	British Steel Corp	Corrosion resistant steels
GB2058133A (en) *	1979-08-06	1981-04-08	Armco Inc	Ferritic steel alloy with high temperature properties

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Publication number	Priority date	Publication date	Assignee	Title
DE2320185B2 (de) *	1973-04-19	1977-11-03	Thyssen Aktiengesellschaft vorm. August Thyssen-Hütte, 4100 Duisburg	Verwendung eines stahls
IT1000219B (it) *	1973-12-06	1976-03-30	Centro Speriment Metallurg	Acciaio per impieghi marini ad elevata resistenza meccanica
DE2819227C2 (de) *	1978-05-02	1984-06-14	Stahlwerke Peine-Salzgitter Ag, 3150 Peine	Schweißbarer Manganstahl sowie Verfahren zum Schweißen dieses Manganstahles
JPS5817055A (ja) *	1981-07-17	1983-02-01	Canon Inc	シ−ト材取扱い装置
JPS6024352A (ja) *	1984-06-22	1985-02-07	Sumitomo Metal Ind Ltd	湿潤炭酸ガス腐食抵抗及び溶接性にすぐれたラインパイプ用鋼

1986
- 1986-08-14 DE DE3627668A patent/DE3627668C1/de not_active Expired
1987
- 1987-08-05 EP EP87111293A patent/EP0256429B1/fr not_active Expired - Lifetime
- 1987-08-05 DE DE8787111293T patent/DE3766040D1/de not_active Expired - Fee Related
- 1987-08-05 ES ES87111293T patent/ES2018801B3/es not_active Expired - Lifetime
- 1987-08-05 AT AT87111293T patent/ATE58183T1/de active
- 1987-08-13 KR KR1019870008890A patent/KR880003024A/ko not_active Ceased
- 1987-08-14 JP JP62202010A patent/JPS63105950A/ja active Granted
1988
- 1988-09-28 US US07/252,006 patent/US4919885A/en not_active Expired - Fee Related

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US2315156A (en) *	1941-10-10	1943-03-30	Clifford P Larrsbee	Low-alloy corrosion-resistant steel
FR1333278A (fr) *	1962-08-29	1963-07-26	Yawata Iron & Steel Co	Rail ayant une résistance à la traction élevée et résistant à la corrosion
GB1568616A (en) *	1977-09-02	1980-06-04	British Steel Corp	Corrosion resistant steels
FR2418277A1 (fr) *	1978-02-24	1979-09-21	Nippon Steel Corp	Plaques en acier pour structure hautement resistantes a la fissuration par corrosion due au nitrate
GB2058133A (en) *	1979-08-06	1981-04-08	Armco Inc	Ferritic steel alloy with high temperature properties

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN, Band 9, Nr. 130 (C-284)[1853], 5. Juni 1985; & JP-A-60 17 055 (NIHON STAINLESS K.K.) 28-01-1985 *

Also Published As

Publication number	Publication date
US4919885A (en)	1990-04-24
ATE58183T1 (de)	1990-11-15
KR880003024A (ko)	1988-05-13
JPH0437153B2 (fr)	1992-06-18
ES2018801B3 (es)	1991-05-16
DE3766040D1 (de)	1990-12-13
DE3627668C1 (de)	1988-03-24
JPS63105950A (ja)	1988-05-11
EP0256429B1 (fr)	1990-11-07

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Publication	Publication Date	Title
DE68911266T2 (de)	1994-06-30	Korrosionsbeständige Nickelbasislegierung.
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EP0256429B1 (fr)	1990-11-07	Acier de construction résistant à la fissuration par corrosion sous contraintes
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DE112021003995T5 (de)	2023-05-11	Hochkorrosionsbeständiger austenitischer rostfreier stahl und verfahren zur herstellung desselben
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DE3225614C2 (fr)	1989-04-13
DE69330580T2 (de)	2001-11-29	Eisen-Chrom-Legierung mit hoher Korrosionsbeständigkeit
DE1558508A1 (de)	1970-04-09	Verwendung eines martensitaushaertbaren Chrom-Nickel-Stahls
DE2819227C2 (de)	1984-06-14	Schweißbarer Manganstahl sowie Verfahren zum Schweißen dieses Manganstahles
DE69833630T2 (de)	2006-08-10	Nickelbasislegierung und Schweisselektrode aus einer Nickelbasislegierung
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DE1608181A1 (de)	1970-11-12	Verwendung eines Nickelstahls