US3847600A - High temperature alloy steel - Google Patents
High temperature alloy steel Download PDFInfo
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- US3847600A US3847600A US00358797A US35879773A US3847600A US 3847600 A US3847600 A US 3847600A US 00358797 A US00358797 A US 00358797A US 35879773 A US35879773 A US 35879773A US 3847600 A US3847600 A US 3847600A
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- high temperature
- percent
- alloy steel
- steel
- temperature alloy
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- Expired - Lifetime
Links
- 229910000851 Alloy steel Inorganic materials 0.000 title claims abstract description 29
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 16
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims description 8
- 229910052796 boron Inorganic materials 0.000 claims description 8
- 229910052757 nitrogen Inorganic materials 0.000 claims description 8
- 229910000831 Steel Inorganic materials 0.000 abstract description 27
- 239000010959 steel Substances 0.000 abstract description 27
- 229910000859 α-Fe Inorganic materials 0.000 abstract description 10
- 229910052799 carbon Inorganic materials 0.000 abstract description 7
- 230000007797 corrosion Effects 0.000 abstract description 5
- 238000005260 corrosion Methods 0.000 abstract description 5
- 239000012535 impurity Substances 0.000 abstract description 5
- 239000000203 mixture Substances 0.000 abstract description 5
- 229910052750 molybdenum Inorganic materials 0.000 description 16
- 239000011651 chromium Substances 0.000 description 12
- 229910052804 chromium Inorganic materials 0.000 description 10
- 235000019589 hardness Nutrition 0.000 description 8
- 239000010955 niobium Substances 0.000 description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 229910045601 alloy Inorganic materials 0.000 description 6
- 239000000956 alloy Substances 0.000 description 6
- 229910052758 niobium Inorganic materials 0.000 description 6
- 229910052720 vanadium Inorganic materials 0.000 description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 5
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 4
- 239000011733 molybdenum Substances 0.000 description 4
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 description 4
- 229910052710 silicon Inorganic materials 0.000 description 4
- 239000010703 silicon Substances 0.000 description 4
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 description 4
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 3
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 229910052748 manganese Inorganic materials 0.000 description 3
- 239000011572 manganese Substances 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 238000005336 cracking Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 150000001247 metal acetylides Chemical class 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000005504 petroleum refining Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000005496 tempering Methods 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 238000005275 alloying Methods 0.000 description 1
- 229910001566 austenite Inorganic materials 0.000 description 1
- 229910000963 austenitic stainless steel Inorganic materials 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- ZPUCINDJVBIVPJ-LJISPDSOSA-N cocaine Chemical compound O([C@H]1C[C@@H]2CC[C@@H](N2C)[C@H]1C(=O)OC)C(=O)C1=CC=CC=C1 ZPUCINDJVBIVPJ-LJISPDSOSA-N 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000002474 experimental method 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
- 229910000734 martensite Inorganic materials 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
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
-
- 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
-
- 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
Definitions
- the steel is an inexpensive ferrite steel having a composition comprising C up to 0.10 percent, Si up to 1%, MN 0.3 1.20 percent, Cr 7-10 percent, Mo 0.3-1.5 percent V 0.1- 0.3 percent, Nb 0.15 0.50 percent, B up to 0.012 percent, N up to 0.050 percent balance fe and incidental impurities.
- This invention relates to a high temperature alloy steel, the alloy steel being an inexpensive ferrite high temperature steel having high creep rupture strength at temperatures up to about 650C and having superior weldability.
- the present invention has been developed on the 2 cent provides a high temperature corrosion resistance up to 650C similar to that of 9% Cr-1% Mo ferrite alloy steel, and Mo addition of 0.3 to 1.5% Nb addition l of 0.15 to 0.50% and V addition of 0.1 to 0.3% form stable carbide and nitride at high temperature to improve high temperature strength.
- This high temperature strength may be further improved by either individual or combined-addition of 0.001 0.012 percent boron and 0.015 -0.050 percent nitrogen in addition to the above listed alloying compositions.
- Preferred high temperature alloy steel of the present invention consists essentially of the following elements in the following weight percentages:
- the high temperature alloy steel of the present invention is characterized in that the maximum hardness of weld heat affected portions is so low that there is little possibility for low temperature cracking while welding. This excellent characteristic is due to the fact that C content is limited to less than 0.10 percent and is stabilized because of the combination of carbon into such carbides as NbC, VC and the like.
- this invention has made an improvement in high temperature strength, hot forming properties, cold forming properties and weldability of a 9% Cr 1% Mo ferrite alloy steel.
- the high temperature alloy steel of this invention transformation point ranging from 820C to 835C
- compositions of the present alloy steel will be described in detail as follows: Cr addition of 7 to l0 perthus enabling tempering at a temperature of approximately 800C.
- the above listed alloy steels containing carbides of Nb and V which are effective for creep rupture strength, easily obtain hardnesses of HV to by 30 minutes heating at a temperature of about 1,115C and tempering at a temperature of about 800C after air cooling, thus cold forming such as cold bending can be performed with ease.
- Table 2 shows the comparison of the creep rupture strength between the completely annealed materials of this invention alloy steels listed hereinabove, after heat treatment, and 2.25% Cr- 1% Mo'steel, 5% Cr 0.5% Mo steel and 9% Cr-1% Mo steel, respectively.
- the alloy steel of the present invention is useful in fields requiring operation at temperatures up to 650C and particularly for boilers, petroleum refining processes, general chemical industries, heat exchanger tubes of atomic furnaces and pipe line materials.
- this invention provides a high temperature alloy steel fo the relatively inexpensive ferrite group having high creep rupture strength up to temperatures of about 650C being characterized in that the maximum hardness of weld heat affected portions is'low and therefore low temperature cracks are 5 unlikely to be caused while welding, thereby proving of great advantage in modern industries.
- a high temperature alloy steel having high creep rupture strength up to temperatures of about 650 consisting essentially of the following elements in the following weight percentages:
- the balance being iron and incidental impurities.
- a high temperature alloy steel according to claim 1 containing 0.001 to 0.012 percent of boron.
- a high temperature alloy steel according to claim 1 containing 0.015 to 0.050 percent of nitrogen.
- a high temperature alloy steel according to claim 1 containing 0.001 to 0.012 percent of boron and 0.015 to 0.050% of nitrogen.
- a high temperature alloy steel consisting essentially of the following elements in the following weight percentages.
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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)
- Heat Treatment Of Articles (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
Abstract
An alloy steel suitable for use at high temperatures, having excellent corrosion resistance, creep strength, hot forming characteristics and weldability. The steel is an inexpensive ferrite steel having a composition comprising C up to 0.10 percent, Si up to 1%, MN 0.3 - 1.20 percent, Cr 7-10 percent, Mo 0.3-1.5 percent V 0.1 - 0.3 percent, Nb 0.15 - 0.50 percent, B up to 0.012 percent, N up to 0.050 percent balance fe and incidental impurities.
Description
United States Patent 1 Mimino et al.
[451 Nov. 12,1974
HIGH TEMPERATURE ALLOY STEEL Inventors: Tohru Mimino: Kazuhisa Kinoshita:
Keisuke Hattori, all of Kawasaki, Japan Assignee: Nippon Kokan Kabushiki Kaisha,
Kawasaki-shi, Kanagawa-ken, Japan Filed: May 9, 1973 Appl. No.: 358,797
Related US. Application Data Continuation of Ser. No. 63,623, Aug. 13, 1970, abandoned.
Foreign Application Priority Data [56] References Cited UNITED STATES PATENTS 3,539,338 11/1970 Mimino 75/126 C 2,109,118 2/1938 Naumann 75/126 F 3,044,872 7/1962 Hayes 75/12(\ C 2,572,191 10/1951 Pnyson 1 H 75/126 F- 3,290,183 [2/1966 Ohtake 75/l2(1 C 3,201,232 8/1965 Thier 75/126 6 Primary E.\aminer-L. Dewayne Rutledge Assistant ExaminerArthur J. Steiner Attorney, Agent, or FirmFlynn & Frishauf [57] ABSTRACT An alloy steel suitable for use at high temperatures, having excellent corrosion resistance, creep strength, hot forming characteristics and weldability. The steel is an inexpensive ferrite steel having a composition comprising C up to 0.10 percent, Si up to 1%, MN 0.3 1.20 percent, Cr 7-10 percent, Mo 0.3-1.5 percent V 0.1- 0.3 percent, Nb 0.15 0.50 percent, B up to 0.012 percent, N up to 0.050 percent balance fe and incidental impurities.
6 Claims, N0 Drawings HIGH TEMPERATURE ALLOY STEEL This is a continuation of application Ser. No. 63,623 filed Aug. 13, 1970, now abandoned.
U.S. Pat. No. 3,539,338 issued Nov. 10, 1970 discloses related subject matter.
This invention relates to a high temperature alloy steel, the alloy steel being an inexpensive ferrite high temperature steel having high creep rupture strength at temperatures up to about 650C and having superior weldability.
There is a great demand for a high temperature alloy steel tube having high temperature strength and high temperature corrosion resistance at low cost for use in operations under conditions of high temperature and high pressure such as in steam-power units, petroleum refining processes and other petroleum industries.
Heretofore, several kinds of steel tubes have been used according to the conditions of temperature, pressure and atmosphere, but there has-been proposed no steel tube of suitable characteristics for a temperature ranging from 550C to 650C. The ferrite steel groups of either 2.25% Crl% Mo steel, 5% cr0.5% Mo steel or 9% Cr 1% Mo steel and the austenite stainless steel groups of either 18% Cr 8% Ni or 18% Cr Ni Ti have been conveniently applied under the above high temperature condition. However, 2.25% Cr 1% Mo ferrite steel does not have a sufficiently high temperature corrosion resistance to be used at a temperature of over about 575C and both the 5% Cr 0.5% Mo and 9% Cr 1% Mo ferrite steels are so low in creep rupture strength and so high in quenched hardness in the heat affected portions of a welded structure as to result in cracks. Austenitic stainless steel is very expensive because of the large quantity of expensive Ni addition.
The present invention has been developed on the 2 cent provides a high temperature corrosion resistance up to 650C similar to that of 9% Cr-1% Mo ferrite alloy steel, and Mo addition of 0.3 to 1.5% Nb addition l of 0.15 to 0.50% and V addition of 0.1 to 0.3% form stable carbide and nitride at high temperature to improve high temperature strength. This high temperature strength may be further improved by either individual or combined-addition of 0.001 0.012 percent boron and 0.015 -0.050 percent nitrogen in addition to the above listed alloying compositions.
Preferred high temperature alloy steel of the present invention consists essentially of the following elements in the following weight percentages:
carbon 0.04 0.06% silicon 0.45 0.60%
manganese 0.50 0.75% chromiun 7.75 8.50% molybdenum 0.9 1.00% vanadium 0.15 0.25% niobium 0.30 0.35%
' boron 0.007 0.008% nitrogen 0.01 l 0.030%
' the balance being iron and incidental impurities.
The high temperature alloy steel of the present invention is characterized in that the maximum hardness of weld heat affected portions is so low that there is little possibility for low temperature cracking while welding. This excellent characteristic is due to the fact that C content is limited to less than 0.10 percent and is stabilized because of the combination of carbon into such carbides as NbC, VC and the like.
The embodiments of the present invention will be described in detail hereinafter.
The typical chemical compositions of this invention alloy steel is shown in the following Table l.
basis of a careful study and numerous experiments with the afore-mentioned facts, namely the necessity for a high temperature alloy steel manufactured at low cost for use in modern industries and the defects of the conventionally used ferrite steels, in order to provide a ferritic heat resistant alloy steel of excellent mechanical properties at low cost. In other words, this invention has made an improvement in high temperature strength, hot forming properties, cold forming properties and weldability of a 9% Cr 1% Mo ferrite alloy steel.
The high temperature alloy steel of this invention transformation point ranging from 820C to 835C,
comprises less than 0.10% carbon, less than 1.0% silicon, 0.30 1.20% manganese, 7-10% chromium 0.3 1.5% molybdenum, 0.1 0.3% vanadium, 0.15 0.50% niobium and the balance being iron and incidental impurities.
The compositions of the present alloy steel will be described in detail as follows: Cr addition of 7 to l0 perthus enabling tempering at a temperature of approximately 800C. The above listed alloy steels, containing carbides of Nb and V which are effective for creep rupture strength, easily obtain hardnesses of HV to by 30 minutes heating at a temperature of about 1,115C and tempering at a temperature of about 800C after air cooling, thus cold forming such as cold bending can be performed with ease.
The following Table 2 shows the comparison of the creep rupture strength between the completely annealed materials of this invention alloy steels listed hereinabove, after heat treatment, and 2.25% Cr- 1% Mo'steel, 5% Cr 0.5% Mo steel and 9% Cr-1% Mo steel, respectively.
Table 2 Creep Rupture Strength (kg/mm Kinds of Steel 650C 10 hrs. 10" hrs. 10 hrs. 10 hrs.
2.25% Crl% M 1.0] 7.3 6.3 4.0 5% Cr0.5% M0 7.3 5.5 4.5 2.8 9% Crl% M0 8.0 6.0 4.8 3.2 This A 14.1 11.5 9.3 6.2 Invention B 14.1 11.6 9.5 6.4 Alloy C 15.0 11.7 9.5 6.3 Steel D 15.0 12.1 10.0 7.1
. Table 3 Maximum Hardness of Weld Heat Affected Portions Kinds of Steel Maximum Hardness (HV) 2.25% Crl% Mo-steel 340 360 5% Cr0.5% M0 steel 410 430 9% Crl% Mo steel 440 460 This A 310 lnvention B 280 Alloy C 290 Steel D 280 It is apparent from the above Table 3 that the maximum hardness of the alloy steels of this invention ranges from HV 280 to 310, being remarkably lower than the maximum hardness of the conventional alloy steels. It is concluded, therefore, that there is little possibility for low temperature cracking in the steels according to the present invention because of martensite transformation during the welding operation.
The alloy steel of the present invention is useful in fields requiring operation at temperatures up to 650C and particularly for boilers, petroleum refining processes, general chemical industries, heat exchanger tubes of atomic furnaces and pipe line materials. As has been discussed hereinabove, this invention provides a high temperature alloy steel fo the relatively inexpensive ferrite group having high creep rupture strength up to temperatures of about 650C being characterized in that the maximum hardness of weld heat affected portions is'low and therefore low temperature cracks are 5 unlikely to be caused while welding, thereby proving of great advantage in modern industries.
The embodiments of the invention in which an exclusive property or privilege is claimed are defined as follows:
1. A high temperature alloy steel having high creep rupture strength up to temperatures of about 650 consisting essentially of the following elements in the following weight percentages:
carbon less than 0.10%
silicon less than 1.0%
manganese 0.30 1.20% chromium 7 10% molybdenum 0.3 1.5% vanadium 0.1 0.3% niobium 0.15 0.50% boron up to 0.012% nitrogen up to 0.05%
the balance being iron and incidental impurities.
2. A high temperature alloy steel according to claim 1, containing 0.001 to 0.012 percent of boron.
3. A high temperature alloy steel according to claim 1, containing 0.015 to 0.050 percent of nitrogen.
4. A high temperature alloy steel according to claim 1, containing 0.001 to 0.012 percent of boron and 0.015 to 0.050% of nitrogen.
5. A high temperature alloy steel consisting essentially of the following elements in the following weight percentages.
carbon 0.04 0.06% silicon 0.45 0.60% manganese 0.50 0.75% chromium 7.75 8.50% molybdenum 0.9 1.00% vanadium 0.15 0.25% niobium 0.30 0.35% boron 0.007 0.008%
v nitrogen 0.011 0.030%
650 consisting essentially of the alloy steel of claim 5. 0
UNITED STATES PATENT OFFICE CERTIFICATE OF CORRECTION Patent No. 3 84'7,6OO Dated November 12, 1974 Inventor(s) TOHRU MIMINO et al It is certified that error appears in the above-identified patent and that said Letters Patent are hereby corrected as shown below:
On the first page lefthand Column, [30] The priority date "Aug. 8 1969 should be --Aug. 27 l969.
Signed and Scaled this thirtieth Day of September 1975 [SEAL] A ttesr:
RUTH. C. MRSON C. MARSHALL DANN Arresting Ojjicer (ummissinnor ufl'arents and Trademarkx
Claims (6)
1. A HIGH TEMPERATURE ALLOY STEEL HAVING HIGH CREEP RUPTURE STRENGTH UP TO TEMPERATURES OF ABOUT 650* CONSISTING ESSENTIALLY OF THE FOLLOWING ELEMENTS IN THE FOLLOWING WEIGHT PERCENTAGES:
2. A high temperature alloy steel according to claim 1, containing 0.001 to 0.012 percent of boron.
3. A high temperature alloy steel according to claim 1, containing 0.015 to 0.050 percent of nitrogen.
4. A high temperature alloy steel according to claim 1, containing 0.001 to 0.012 percent of boron and 0.015 to 0.050% of nitrogen.
5. A HIGH TEMPERATURE ALLOY STEEL CONSISTING ESSENTIALLY OF THE FOLLOWING ELEMENTS IN THE FOLLOWING WEIGHT PERCENTAGES.
6. A high temperature alloy steel tube having high creep rupture strength up to temperatures of about 650* consisting essentially of the alloy steel of claim 5.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP44067174A JPS498765B1 (en) | 1969-08-27 | 1969-08-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US3847600A true US3847600A (en) | 1974-11-12 |
Family
ID=13337250
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US00358797A Expired - Lifetime US3847600A (en) | 1969-08-27 | 1973-05-09 | High temperature alloy steel |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US3847600A (en) |
| JP (1) | JPS498765B1 (en) |
| CA (1) | CA923735A (en) |
| CH (1) | CH509414A (en) |
| DE (1) | DE2042394A1 (en) |
| FR (1) | FR2059330A5 (en) |
| GB (1) | GB1290412A (en) |
| SE (1) | SE352378B (en) |
| ZA (1) | ZA705766B (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4035159A (en) * | 1976-03-03 | 1977-07-12 | Toyota Jidosha Kogyo Kabushiki Kaisha | Iron-base sintered alloy for valve seat |
| US4047941A (en) * | 1974-09-23 | 1977-09-13 | Allegheny Ludlum Industries, Inc. | Duplex ferrit IC-martensitic stainless steel |
| US4054448A (en) * | 1974-09-23 | 1977-10-18 | Allegheny Ludlum Industries, Inc. | Duplex ferritic-martensitic stainless steel |
| US4078919A (en) * | 1973-11-21 | 1978-03-14 | Nippon Steel Corporation | Ferritic stainless steel having excellent workability and high toughness |
| US4222771A (en) * | 1973-02-28 | 1980-09-16 | Mitsubishi Jukogyo Kabushiki Kaisha | High chromium steel of mixed structure containing ferrite for high temperature use |
| US4266974A (en) * | 1978-10-30 | 1981-05-12 | Kawasaki Steel Corporation | Alloy steel powder having excellent compressibility, moldability and heat-treatment property |
| FR2535235A1 (en) * | 1982-11-02 | 1984-05-04 | Kobe Steel Ltd | WELDING WIRE OR WELD FOR ELECTRIC SUBMERGED WELDING OF CHROME OR MOLYBDENUM STEELS |
| FR2585370A1 (en) * | 1985-07-25 | 1987-01-30 | Nippon Kokan Kk | REFRACTORY STEEL WITH 9% CHROME |
| EP1329532A2 (en) * | 1997-09-22 | 2003-07-23 | National Research Institute For Metals | Ferritic heat-resistant steel and method for producing it |
| FR2851774A1 (en) * | 2003-02-27 | 2004-09-03 | Inst Francais Du Petrole | LOW ALLOYED ANTICOKAGE STEELS WITH INCREASED SILICON AND MANGANESE CONTENT AND THEIR USE IN REFINING AND PETROCHEMICAL APPLICATIONS |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60184665A (en) * | 1984-02-29 | 1985-09-20 | Kobe Steel Ltd | Low-alloy steel for pressure vessel |
| JPH01268846A (en) * | 1988-04-20 | 1989-10-26 | Kawasaki Steel Corp | Hot pressing tool steel |
| JP3027011B2 (en) * | 1990-12-28 | 2000-03-27 | 日新製鋼株式会社 | Chromium-containing steel sheet with excellent corrosion resistance and workability |
| JP3027012B2 (en) * | 1990-12-28 | 2000-03-27 | 日新製鋼株式会社 | High-strength chromium-containing steel sheet with excellent corrosion resistance and workability |
| JPH0559498A (en) * | 1990-12-28 | 1993-03-09 | Toyota Motor Corp | Ferritic heat resistant cast steel and its manufacture |
| DE19643752A1 (en) * | 1996-10-23 | 1998-04-30 | Abb Patent Gmbh | Corrosion- and oxidation-resistant material, used as heat exchanger material |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2109118A (en) * | 1932-12-08 | 1938-02-22 | Krupp Ag | Manufacture of articles from steel alloys |
| US2572191A (en) * | 1949-12-16 | 1951-10-23 | Crucible Steel Co America | Alloy steel having high strength at elevated temperature |
| US3044872A (en) * | 1959-11-02 | 1962-07-17 | North American Aviation Inc | Steel alloy composition |
| US3201232A (en) * | 1961-04-01 | 1965-08-17 | Boehler & Co Ag Geb | Use of steel involving prolonged stressing at elevated temperatures |
| US3290183A (en) * | 1961-08-29 | 1966-12-06 | Yawata Iron & Steel Co | Method of producing anticorrosion high tensile strength rail |
| US3539338A (en) * | 1966-06-28 | 1970-11-10 | Nippon Kokan Kk | High-temperature alloy steel containing cr and mo |
-
1969
- 1969-08-27 JP JP44067174A patent/JPS498765B1/ja active Pending
-
1970
- 1970-08-10 SE SE10899/70A patent/SE352378B/xx unknown
- 1970-08-13 GB GB1290412D patent/GB1290412A/en not_active Expired
- 1970-08-14 CA CA090818A patent/CA923735A/en not_active Expired
- 1970-08-21 ZA ZA705766A patent/ZA705766B/en unknown
- 1970-08-26 DE DE19702042394 patent/DE2042394A1/en active Pending
- 1970-08-27 FR FR7031341A patent/FR2059330A5/fr not_active Expired
- 1970-08-27 CH CH1282970A patent/CH509414A/en not_active IP Right Cessation
-
1973
- 1973-05-09 US US00358797A patent/US3847600A/en not_active Expired - Lifetime
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2109118A (en) * | 1932-12-08 | 1938-02-22 | Krupp Ag | Manufacture of articles from steel alloys |
| US2572191A (en) * | 1949-12-16 | 1951-10-23 | Crucible Steel Co America | Alloy steel having high strength at elevated temperature |
| US3044872A (en) * | 1959-11-02 | 1962-07-17 | North American Aviation Inc | Steel alloy composition |
| US3201232A (en) * | 1961-04-01 | 1965-08-17 | Boehler & Co Ag Geb | Use of steel involving prolonged stressing at elevated temperatures |
| US3290183A (en) * | 1961-08-29 | 1966-12-06 | Yawata Iron & Steel Co | Method of producing anticorrosion high tensile strength rail |
| US3539338A (en) * | 1966-06-28 | 1970-11-10 | Nippon Kokan Kk | High-temperature alloy steel containing cr and mo |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4222771A (en) * | 1973-02-28 | 1980-09-16 | Mitsubishi Jukogyo Kabushiki Kaisha | High chromium steel of mixed structure containing ferrite for high temperature use |
| US4078919A (en) * | 1973-11-21 | 1978-03-14 | Nippon Steel Corporation | Ferritic stainless steel having excellent workability and high toughness |
| US4047941A (en) * | 1974-09-23 | 1977-09-13 | Allegheny Ludlum Industries, Inc. | Duplex ferrit IC-martensitic stainless steel |
| US4054448A (en) * | 1974-09-23 | 1977-10-18 | Allegheny Ludlum Industries, Inc. | Duplex ferritic-martensitic stainless steel |
| US4035159A (en) * | 1976-03-03 | 1977-07-12 | Toyota Jidosha Kogyo Kabushiki Kaisha | Iron-base sintered alloy for valve seat |
| US4266974A (en) * | 1978-10-30 | 1981-05-12 | Kawasaki Steel Corporation | Alloy steel powder having excellent compressibility, moldability and heat-treatment property |
| FR2535235A1 (en) * | 1982-11-02 | 1984-05-04 | Kobe Steel Ltd | WELDING WIRE OR WELD FOR ELECTRIC SUBMERGED WELDING OF CHROME OR MOLYBDENUM STEELS |
| US4561888A (en) * | 1982-11-02 | 1985-12-31 | Kabushiki Kaisha Kobe Seiko Sho | Welding wire for use in submerged arc welding of Cr-Mo steels |
| FR2585370A1 (en) * | 1985-07-25 | 1987-01-30 | Nippon Kokan Kk | REFRACTORY STEEL WITH 9% CHROME |
| EP1329532A2 (en) * | 1997-09-22 | 2003-07-23 | National Research Institute For Metals | Ferritic heat-resistant steel and method for producing it |
| EP1329531A2 (en) * | 1997-09-22 | 2003-07-23 | National Research Institute For Metals | Ferritic heat-resistant steel and method for producing it |
| EP1329532A3 (en) * | 1997-09-22 | 2003-07-30 | National Research Institute For Metals | Ferritic heat-resistant steel and method for producing it |
| EP1329531A3 (en) * | 1997-09-22 | 2003-07-30 | National Research Institute For Metals | Ferritic heat-resistant steel and method for producing it |
| FR2851774A1 (en) * | 2003-02-27 | 2004-09-03 | Inst Francais Du Petrole | LOW ALLOYED ANTICOKAGE STEELS WITH INCREASED SILICON AND MANGANESE CONTENT AND THEIR USE IN REFINING AND PETROCHEMICAL APPLICATIONS |
| US7442264B2 (en) | 2003-02-27 | 2008-10-28 | Institute Francais Du Petrole | Method of using low alloy anticoking steels with an increased silicon and manganese content in refining and petrochemicals applications |
Also Published As
| Publication number | Publication date |
|---|---|
| CH509414A (en) | 1971-06-30 |
| DE2042394A1 (en) | 1971-03-25 |
| JPS498765B1 (en) | 1974-02-28 |
| GB1290412A (en) | 1972-09-27 |
| ZA705766B (en) | 1971-04-28 |
| SE352378B (en) | 1972-12-27 |
| CA923735A (en) | 1973-04-03 |
| FR2059330A5 (en) | 1971-05-28 |
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