US2905577A - Creep resistant chromium steel - Google Patents
Creep resistant chromium steel Download PDFInfo
- Publication number
- US2905577A US2905577A US557449A US55744956A US2905577A US 2905577 A US2905577 A US 2905577A US 557449 A US557449 A US 557449A US 55744956 A US55744956 A US 55744956A US 2905577 A US2905577 A US 2905577A
- Authority
- US
- United States
- Prior art keywords
- steel
- percent percent
- temperature
- solution
- chromium steel
- Prior art date
- 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.)
- Expired - Lifetime
Links
- 229910001220 stainless steel Inorganic materials 0.000 title description 3
- 229910000831 Steel Inorganic materials 0.000 claims description 22
- 239000010959 steel Substances 0.000 claims description 22
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 5
- 229910052750 molybdenum Inorganic materials 0.000 claims description 5
- 239000011733 molybdenum Substances 0.000 claims description 5
- 238000010791 quenching Methods 0.000 claims description 4
- 230000000171 quenching effect Effects 0.000 claims description 4
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 4
- 229910052721 tungsten Inorganic materials 0.000 claims description 4
- 239000010937 tungsten Substances 0.000 claims description 4
- 229910052720 vanadium Inorganic materials 0.000 claims description 4
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 claims description 4
- 238000004881 precipitation hardening Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 239000010955 niobium Substances 0.000 description 5
- 229910052758 niobium Inorganic materials 0.000 description 5
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 description 5
- 229910052715 tantalum Inorganic materials 0.000 description 5
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 5
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 4
- 229910045601 alloy Inorganic materials 0.000 description 4
- 239000000956 alloy Substances 0.000 description 4
- 239000011651 chromium Substances 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 239000010936 titanium Substances 0.000 description 4
- 229910052719 titanium Inorganic materials 0.000 description 4
- 229910000859 α-Fe Inorganic materials 0.000 description 4
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 3
- 238000007792 addition Methods 0.000 description 3
- 229910052804 chromium Inorganic materials 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 230000032683 aging Effects 0.000 description 2
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910052684 Cerium Inorganic materials 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 230000002939 deleterious effect Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 239000011572 manganese Substances 0.000 description 1
- 229910000734 martensite Inorganic materials 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon 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
Definitions
- This invention relates to ferritic chromium steels. Such steels have been used to a large extent in recent years for creep-resistant applications such as turbine and compressor discs in gas turbines. The normal procedure has been to harden and temper the alloy and it has been shown by numerous workers that the composition of the steel is critical if optimum properties are to be obtained, it being generally accepted that if the composition of the steel is such that it is not wholly austenitic-at the hardening or solution temperature, the final structure of the steel will be a tempered martensite with areas of free ferrite and if these areas of free ferrite are extensive, they have a deleterious effect on the creep strength and transverse ductility of the material.
- any of the strongerdeoxidisers such as aluminium, cerium, magnesium could be present if desired but these are not essential.
- chromium steels which are essentially ferritic (for example containing at least 60% ferrite) at normal solution or hardening temperatures (for example l000-1300 C.) and so do not harden on quenching, are subsequently treated to improve or provide creep strength.
- the treatment referred to may consist of cold or Warm working the soft ferritic steel or by a combination of solution hardening and precipitation hardening of the material or by all three mechanisms.
- Cold or warm working may comprise heating the solution treated material to the desired temperature within a suitable range, e.g. 20700 C., and then working it by rolling, stamping, pressing or any other means to a reduction in thickness or diameter of, for example 1% to 10%.
- Solution hardening or precipitation hardening may be effected with the use of precipitation hardening additions, such for example, as molybdenum, tungsten, niobium, tantalum, titanium or other suitable known materials.
- Steels suitable for cold or Warm working as above described may have any composition within the specification
- the alloys are normally solution treated at 1000-1300 I (Land air, all or wateriquenched. .They aresuhsequently aged in the temperature range 500-700 C.
- a normally non-handenahle chromium steel contain ing .at least 60% ferrite at 1000-1300 C., at least one element selected from the group consisting of 06% molybdenum, 0-6% tungsten and 0 2% vanadium where in the elements are present in'atotal amount'of at least 1.5% for the purpose of solution treatment wherein said steel has been treated to improve creep strength by the steps comprising solution treating the steel at a temperature in the range of 1000-1300 C., quenching the steel for the purpose of e'fifecting solutiontreatment thereof and working the steel at a temperature the temperature range of 20-700 C. to reduce the thickness thereof substantially 1%10%.
- the steel .as defined in;.claim'1 containing at least one element selected from the group consisting of 0-2% titanium, and .0-.2% niobium and tantalum wherein said elements are present in an effective amount for producing precipitation hardening and wherein the steel has been treated to improve creep strength by the step comprising aging the steel in a temperature, range of 500-700 C. after the steel has been Worked to reduce the thickness thereof;
Description
United States Patent CREEP RESISTANT CHROMIUM STEEL Geolfrey T. Harris, Sheflield, and Henry C. Child, Rotherham, England, assignors to The Birmingham Small Arms Company Limited, Birmingham, England, a British company No Drawing. Application January 5, 1956 Serial No. 557,449
3 Claims. (Cl. nus-s1 This invention relates to ferritic chromium steels. Such steels have been used to a large extent in recent years for creep-resistant applications such as turbine and compressor discs in gas turbines. The normal procedure has been to harden and temper the alloy and it has been shown by numerous workers that the composition of the steel is critical if optimum properties are to be obtained, it being generally accepted that if the composition of the steel is such that it is not wholly austenitic-at the hardening or solution temperature, the final structure of the steel will be a tempered martensite with areas of free ferrite and if these areas of free ferrite are extensive, they have a deleterious effect on the creep strength and transverse ductility of the material.
v 2,905,577 Patented Sept. 22, 1959 Percent Carbon 0.05-0.33 Manganese v i Q 0.05-2.0 Nickel 0-4 Silicon 0.05-1.0 I Cobalt 0-4 I Chromium 9-20 Trungsten 03* Molybdenum; 0-3 Niobium and tantalum 0-2 Titanium 0-2 Vanadium 0-2 Nitrogen 0.0010.2 Boron 0005 *At least 0.7% total of these elements for adequate creep strengths.
In addition up to 0.5 total of any of the strongerdeoxidisers such as aluminium, cerium, magnesium could be present if desired but these are not essential.
Example of alloys within these ranges are:
0 Mn Si Cr Mo Nb V '1! N B W Percent Percent Percent Percent Percent Percent Percent Percent Percent Percent It is an object of the present invention to obviate the close control of composition.
According to this invention chromium steels which are essentially ferritic (for example containing at least 60% ferrite) at normal solution or hardening temperatures (for example l000-1300 C.) and so do not harden on quenching, are subsequently treated to improve or provide creep strength.
The treatment referred to may consist of cold or Warm working the soft ferritic steel or by a combination of solution hardening and precipitation hardening of the material or by all three mechanisms.
Cold or warm working may comprise heating the solution treated material to the desired temperature within a suitable range, e.g. 20700 C., and then working it by rolling, stamping, pressing or any other means to a reduction in thickness or diameter of, for example 1% to 10%.
Solution hardening or precipitation hardening may be effected with the use of precipitation hardening additions, such for example, as molybdenum, tungsten, niobium, tantalum, titanium or other suitable known materials.
Further features of the invention will be apparent from the following description of detailed methods, given by way of example of carrying out the invention.
Steels suitable for cold or Warm working as above described may have any composition within the specification The above alloys tested at 30 tons/sq. in. at 500 the following figures:
C. gave For solution hardening and precipitation hardening materials the specification is as above described with the exception of:
Percent Molybdenum 0-6* Tungsten 0-6 Vanadium 0-2 Niobium and tantalum 02T Titanium 0 2? Solution hardening addition, totalling at least 1.5%.
tPrecipitation hardening addition. These steels may also be warm worked but satisfactory creep strength can be achieved without this process. Examples:
0 Mn Si Cr Mo W V Nb N B Percent Percent Percent Percent Percent Percent Percent Percent Percent Percent WEX352 0. 05 0. 8 0. 3 13 1 1 0. 2 0. 6 0. 1 0. 01 WEX409 0. 05 0. 8 0. 3 13 2 2 0. 2 0. 5 0. 1 0. 01 WEX051 0. 05 0. 8 0. 3 13 2 2 0. 2 0. 25 0. 1 0. 01
The alloys are normally solution treated at 1000-1300 I (Land air, all or wateriquenched. .They aresuhsequently aged in the temperature range 500-700 C.
The above examples, when oil quenched at 1200" C., aged for 2.0 hours M650 and testede :30 DDS t i $50.01G.gawethetolldwingfigures: Y
What we 'claim is:
l. A normally non-handenahle chromium steel contain ing .at least 60% ferrite at 1000-1300 C., at least one element selected from the group consisting of 06% molybdenum, 0-6% tungsten and 0 2% vanadium where in the elements are present in'atotal amount'of at least 1.5% for the purpose of solution treatment wherein said steel has been treated to improve creep strength by the steps comprising solution treating the steel at a temperature in the range of 1000-1300 C., quenching the steel for the purpose of e'fifecting solutiontreatment thereof and working the steel at a temperature the temperature range of 20-700 C. to reduce the thickness thereof substantially 1%10%.
'2. The steel .as defined in;.claim'1 containing at least one element selected from the group consisting of 0-2% titanium, and .0-.2% niobium and tantalum wherein said elements are present in an effective amount for producing precipitation hardening and wherein the steel has been treated to improve creep strength by the step comprising aging the steel in a temperature, range of 500-700 C. after the steel has been Worked to reduce the thickness thereof;
3. The steel as defined in claim 1 containing at least one-element selected from the "group consisting of 0 2% titaniumyand 0 2% niobium and tantalum wherein said elements are present in an effective amount ior producing precipitation hardening and wherein the steel has been treated to impress creep strength theneof .by the step comprising aging the steeliat a temperature range of 5 00-7 00 C. following quenching ofsaid steel and before working of said steel to reduce the'thickness thereof.
References Cited in the file of this patent
Claims (1)
1. A NORMALLY NON-HARDENABLE CHLORMIUM STEEL CONTAINING AT LEAST 60% FERRITE AT 1000*-1300*C., AT LEAST ONE ELEMENT SELECTED FROM THE GROUP CONSISTING OF 0-6% MOLYBDENUM, 0-6% TUNGSTEN AND 0-2% VANADIUM WHEREIN THE ELEMENTS ARE PRESENT IN A TOTAL AMOUNT OF AT LEAST 1.5% FOR THE PURPOSE OF SOLUTION TREATMENT WHEREIN SAID STEEL HAS BEEN TREATED TO IMPROVE CREEP STRENGTH BY THE STEPS COMPRISING SOLUTION TREATING THE STEEL AT A TEMPERATURE IN THE RANGE OF 1000*-1300*C., QUENCHING THE STEEL FOR THE PURPOSE OF EFFECTING SOLUTION TREATMENT THEREOF AND WORKING THE STEEL AT A TEMPERATURE WITHIN THE TEMPERATURE RANGE OF 20*-700*C. TO REDUCE THE THICKNESS THEREOF SUBSTANTIALLY 1%-10%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US557449A US2905577A (en) | 1956-01-05 | 1956-01-05 | Creep resistant chromium steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US557449A US2905577A (en) | 1956-01-05 | 1956-01-05 | Creep resistant chromium steel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US2905577A true US2905577A (en) | 1959-09-22 |
Family
ID=24225450
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US557449A Expired - Lifetime US2905577A (en) | 1956-01-05 | 1956-01-05 | Creep resistant chromium steel |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US2905577A (en) |
Cited By (42)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3044872A (en) * | 1959-11-02 | 1962-07-17 | North American Aviation Inc | Steel alloy composition |
| US3141800A (en) * | 1962-01-03 | 1964-07-21 | United States Steel Corp | Dimensionally stable stainless steel press plates and method of forming same |
| US3183080A (en) * | 1961-11-21 | 1965-05-11 | Universal Cyclops Steel Corp | Stainless steels and products thereof |
| US3201231A (en) * | 1961-11-21 | 1965-08-17 | Universal Cyclops Steel Corp | Stainless steels |
| US3216868A (en) * | 1961-03-06 | 1965-11-09 | Lasalle Steel Co | Elevated temperature working and heat treatment of stainless steel |
| US3250611A (en) * | 1963-04-10 | 1966-05-10 | Allegheny Ludlum Steel | Corrosion-resisting steel and method of processing |
| US3309238A (en) * | 1962-05-16 | 1967-03-14 | Suedwestfalen Ag Stahlwerke | Deep drawing of stainless steels, and steel therefor |
| US3617258A (en) * | 1966-10-21 | 1971-11-02 | Toyo Kogyo Co | Heat resistant alloy steel |
| US3660174A (en) * | 1968-05-31 | 1972-05-02 | Uddeholms Ab | Method in the manufacture of stainless, hardenable chromium-steel strip and sheet |
| US3719476A (en) * | 1969-08-29 | 1973-03-06 | Armco Steel Corp | Precipitation-hardenable stainless steel |
| US3753788A (en) * | 1971-10-15 | 1973-08-21 | Republic Steel Corp | Non-ribbing ferritic steel and process |
| US3807991A (en) * | 1971-10-29 | 1974-04-30 | Airco Inc | Ferritic stainless steel alloy |
| US3890143A (en) * | 1972-04-14 | 1975-06-17 | Nyby Bruk Ab | Welded constructions of stainless steels |
| US3928088A (en) * | 1973-11-09 | 1975-12-23 | Carpenter Technology Corp | Ferritic stainless steel |
| US3929471A (en) * | 1971-12-22 | 1975-12-30 | Hitachi Ltd | High speed steel having high wear-resistance |
| US3933479A (en) * | 1974-10-10 | 1976-01-20 | United States Steel Corporation | Vanadium stabilized martensitic stainless steel |
| US4070208A (en) * | 1977-01-03 | 1978-01-24 | Nippon Steel Corporation | Method for the manufacture of a ridging-free ferritic stainless steel sheet |
| US4222771A (en) * | 1973-02-28 | 1980-09-16 | Mitsubishi Jukogyo Kabushiki Kaisha | High chromium steel of mixed structure containing ferrite for high temperature use |
| US4261739A (en) * | 1979-08-06 | 1981-04-14 | Armco Inc. | Ferritic steel alloy with improved high temperature properties |
| US4286986A (en) * | 1979-08-01 | 1981-09-01 | Allegheny Ludlum Steel Corporation | Ferritic stainless steel and processing therefor |
| US4540424A (en) * | 1983-02-26 | 1985-09-10 | Kubota, Ltd. | Heat-resisting alloy for rolls for glass forming |
| EP0199046A1 (en) * | 1985-04-06 | 1986-10-29 | Nippon Steel Corporation | High-strength heat-resisting ferritic steel pipe and tube |
| US4622067A (en) * | 1985-02-07 | 1986-11-11 | The United States Of America As Represented By The United States Department Of Energy | Low activation ferritic alloys |
| GB2179674A (en) * | 1985-07-25 | 1987-03-11 | Nippon Kokan Kk | 9% Chromium heat-resistant steel |
| US4857120A (en) * | 1984-06-21 | 1989-08-15 | Kabushiki Kaisha Toshiba | Heat-resisting steel turbine part |
| US4917738A (en) * | 1985-07-09 | 1990-04-17 | Mitsubishi Jukogyo Kabushiki Kaisha | Steam turbine rotor for high temperature |
| US4929288A (en) * | 1988-01-04 | 1990-05-29 | Borges Robert J | Corrosion and abrasion resistant alloy |
| US5236521A (en) * | 1990-06-06 | 1993-08-17 | Nkk Corporation | Abrasion resistant steel |
| US5292384A (en) * | 1992-07-17 | 1994-03-08 | Martin Marietta Energy Systems, Inc. | Cr-W-V bainitic/ferritic steel with improved strength and toughness and method of making |
| US5310431A (en) * | 1992-10-07 | 1994-05-10 | Robert F. Buck | Creep resistant, precipitation-dispersion-strengthened, martensitic stainless steel and method thereof |
| US5403410A (en) * | 1990-06-06 | 1995-04-04 | Nkk Corporation | Abrasion-resistant steel |
| DE19505074A1 (en) * | 1994-02-15 | 1995-09-14 | Mitsubishi Materials Corp | Iron@-chromium@ alloy used for diesel engine nozzles |
| US5824265A (en) * | 1996-04-24 | 1998-10-20 | J & L Fiber Services, Inc. | Stainless steel alloy for pulp refiner plate |
| EP0887431A1 (en) * | 1997-06-25 | 1998-12-30 | Mitsubishi Heavy Industries, Ltd. | Heat-resisting steel |
| DE10025808A1 (en) * | 2000-05-24 | 2001-11-29 | Alstom Power Nv | Martensitic hardenable tempering steel with improved heat resistance and ductility |
| US6375764B1 (en) * | 1998-12-24 | 2002-04-23 | Nisshin Steel Co., Ltd. | Weaving machine member made of an abrasion-resistant steel |
| US20040154706A1 (en) * | 2003-02-07 | 2004-08-12 | Buck Robert F. | Fine-grained martensitic stainless steel and method thereof |
| US20040154707A1 (en) * | 2003-02-07 | 2004-08-12 | Buck Robert F. | Fine-grained martensitic stainless steel and method thereof |
| US20080000737A1 (en) * | 2005-03-17 | 2008-01-03 | Jfe Steel Corporation, A Corporation Of Japan | Stainless Steel Sheet with Excellent Heat and Corrosion Resistances for Brake Disk |
| EP1988182A1 (en) * | 2006-02-06 | 2008-11-05 | Babcock-Hitachi Kabushiki Kaisha | Ferritic heat-resistant steel |
| US20140086755A1 (en) * | 2011-06-07 | 2014-03-27 | Borgwarner Inc. | Turbocharger and component therefor |
| US10246765B2 (en) * | 2014-01-17 | 2019-04-02 | Nippon Steel & Sumitomo Metal Corporation | Martensitic Cr-containing steel and oil country tubular goods |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2397997A (en) * | 1944-06-21 | 1946-04-09 | Ernest H Wyche | Providing inherently aging chromium-nickel stainless steel with different tempers |
| US2401580A (en) * | 1943-12-28 | 1946-06-04 | Allegheny Ludlum Steel | Method of increasing the high temperature strength of heat-resisting alloys |
| US2469887A (en) * | 1945-10-02 | 1949-05-10 | Gen Electric | Forgeable high-temperature alloys |
| US2693413A (en) * | 1951-01-31 | 1954-11-02 | Firth Vickers Stainless Steels Ltd | Alloy steels |
| GB722809A (en) * | 1951-08-23 | 1955-02-02 | Henry William Kirby | Improvements relating to alloy steels for use at elevated temperatures |
| US2793113A (en) * | 1952-08-22 | 1957-05-21 | Hadfields Ltd | Creep resistant steel |
-
1956
- 1956-01-05 US US557449A patent/US2905577A/en not_active Expired - Lifetime
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2401580A (en) * | 1943-12-28 | 1946-06-04 | Allegheny Ludlum Steel | Method of increasing the high temperature strength of heat-resisting alloys |
| US2397997A (en) * | 1944-06-21 | 1946-04-09 | Ernest H Wyche | Providing inherently aging chromium-nickel stainless steel with different tempers |
| US2469887A (en) * | 1945-10-02 | 1949-05-10 | Gen Electric | Forgeable high-temperature alloys |
| US2693413A (en) * | 1951-01-31 | 1954-11-02 | Firth Vickers Stainless Steels Ltd | Alloy steels |
| GB722809A (en) * | 1951-08-23 | 1955-02-02 | Henry William Kirby | Improvements relating to alloy steels for use at elevated temperatures |
| US2793113A (en) * | 1952-08-22 | 1957-05-21 | Hadfields Ltd | Creep resistant steel |
Cited By (53)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3044872A (en) * | 1959-11-02 | 1962-07-17 | North American Aviation Inc | Steel alloy composition |
| US3216868A (en) * | 1961-03-06 | 1965-11-09 | Lasalle Steel Co | Elevated temperature working and heat treatment of stainless steel |
| US3183080A (en) * | 1961-11-21 | 1965-05-11 | Universal Cyclops Steel Corp | Stainless steels and products thereof |
| US3201231A (en) * | 1961-11-21 | 1965-08-17 | Universal Cyclops Steel Corp | Stainless steels |
| US3141800A (en) * | 1962-01-03 | 1964-07-21 | United States Steel Corp | Dimensionally stable stainless steel press plates and method of forming same |
| US3309238A (en) * | 1962-05-16 | 1967-03-14 | Suedwestfalen Ag Stahlwerke | Deep drawing of stainless steels, and steel therefor |
| US3250611A (en) * | 1963-04-10 | 1966-05-10 | Allegheny Ludlum Steel | Corrosion-resisting steel and method of processing |
| US3617258A (en) * | 1966-10-21 | 1971-11-02 | Toyo Kogyo Co | Heat resistant alloy steel |
| US3660174A (en) * | 1968-05-31 | 1972-05-02 | Uddeholms Ab | Method in the manufacture of stainless, hardenable chromium-steel strip and sheet |
| US3719476A (en) * | 1969-08-29 | 1973-03-06 | Armco Steel Corp | Precipitation-hardenable stainless steel |
| US3753788A (en) * | 1971-10-15 | 1973-08-21 | Republic Steel Corp | Non-ribbing ferritic steel and process |
| US3807991A (en) * | 1971-10-29 | 1974-04-30 | Airco Inc | Ferritic stainless steel alloy |
| US3929471A (en) * | 1971-12-22 | 1975-12-30 | Hitachi Ltd | High speed steel having high wear-resistance |
| US3890143A (en) * | 1972-04-14 | 1975-06-17 | Nyby Bruk Ab | Welded constructions of stainless steels |
| US4222771A (en) * | 1973-02-28 | 1980-09-16 | Mitsubishi Jukogyo Kabushiki Kaisha | High chromium steel of mixed structure containing ferrite for high temperature use |
| US3928088A (en) * | 1973-11-09 | 1975-12-23 | Carpenter Technology Corp | Ferritic stainless steel |
| US3933479A (en) * | 1974-10-10 | 1976-01-20 | United States Steel Corporation | Vanadium stabilized martensitic stainless steel |
| US4070208A (en) * | 1977-01-03 | 1978-01-24 | Nippon Steel Corporation | Method for the manufacture of a ridging-free ferritic stainless steel sheet |
| US4286986A (en) * | 1979-08-01 | 1981-09-01 | Allegheny Ludlum Steel Corporation | Ferritic stainless steel and processing therefor |
| US4261739A (en) * | 1979-08-06 | 1981-04-14 | Armco Inc. | Ferritic steel alloy with improved high temperature properties |
| US4540424A (en) * | 1983-02-26 | 1985-09-10 | Kubota, Ltd. | Heat-resisting alloy for rolls for glass forming |
| US4857120A (en) * | 1984-06-21 | 1989-08-15 | Kabushiki Kaisha Toshiba | Heat-resisting steel turbine part |
| US4622067A (en) * | 1985-02-07 | 1986-11-11 | The United States Of America As Represented By The United States Department Of Energy | Low activation ferritic alloys |
| EP0199046A1 (en) * | 1985-04-06 | 1986-10-29 | Nippon Steel Corporation | High-strength heat-resisting ferritic steel pipe and tube |
| US4917738A (en) * | 1985-07-09 | 1990-04-17 | Mitsubishi Jukogyo Kabushiki Kaisha | Steam turbine rotor for high temperature |
| GB2179674B (en) * | 1985-07-25 | 1989-08-23 | Nippon Kokan Kk | 9% chromium heat-resistant steel excellent in toughness and having high cracking resistance and high creep strength in welded joint |
| GB2179674A (en) * | 1985-07-25 | 1987-03-11 | Nippon Kokan Kk | 9% Chromium heat-resistant steel |
| US5116571A (en) * | 1985-07-25 | 1992-05-26 | Nippon Kokan Kabushiki Kaisha | Chromoum heat-resistant steel excellent in toughness and having high cracking resistance and high creep strength in welded joint |
| US4929288A (en) * | 1988-01-04 | 1990-05-29 | Borges Robert J | Corrosion and abrasion resistant alloy |
| US5236521A (en) * | 1990-06-06 | 1993-08-17 | Nkk Corporation | Abrasion resistant steel |
| US5403410A (en) * | 1990-06-06 | 1995-04-04 | Nkk Corporation | Abrasion-resistant steel |
| US5292384A (en) * | 1992-07-17 | 1994-03-08 | Martin Marietta Energy Systems, Inc. | Cr-W-V bainitic/ferritic steel with improved strength and toughness and method of making |
| US5310431A (en) * | 1992-10-07 | 1994-05-10 | Robert F. Buck | Creep resistant, precipitation-dispersion-strengthened, martensitic stainless steel and method thereof |
| DE19505074A1 (en) * | 1994-02-15 | 1995-09-14 | Mitsubishi Materials Corp | Iron@-chromium@ alloy used for diesel engine nozzles |
| US5824265A (en) * | 1996-04-24 | 1998-10-20 | J & L Fiber Services, Inc. | Stainless steel alloy for pulp refiner plate |
| EP0887431A1 (en) * | 1997-06-25 | 1998-12-30 | Mitsubishi Heavy Industries, Ltd. | Heat-resisting steel |
| US5972287A (en) * | 1997-06-25 | 1999-10-26 | Mitsubishi Heavy Industries, Ltd. | Heat-resisting steel |
| US6375764B1 (en) * | 1998-12-24 | 2002-04-23 | Nisshin Steel Co., Ltd. | Weaving machine member made of an abrasion-resistant steel |
| US20020108680A1 (en) * | 1998-12-24 | 2002-08-15 | Nisshin Steel Co., Ltd. | Abrasion resistant steel |
| DE10025808A1 (en) * | 2000-05-24 | 2001-11-29 | Alstom Power Nv | Martensitic hardenable tempering steel with improved heat resistance and ductility |
| US6464804B2 (en) | 2000-05-24 | 2002-10-15 | Alstom (Switzerland) Ltd | Martensitic-hardenable heat-treated steel with improved resistance to heat and ductility |
| US6899773B2 (en) | 2003-02-07 | 2005-05-31 | Advanced Steel Technology, Llc | Fine-grained martensitic stainless steel and method thereof |
| US20040154707A1 (en) * | 2003-02-07 | 2004-08-12 | Buck Robert F. | Fine-grained martensitic stainless steel and method thereof |
| US6890393B2 (en) | 2003-02-07 | 2005-05-10 | Advanced Steel Technology, Llc | Fine-grained martensitic stainless steel and method thereof |
| US20040154706A1 (en) * | 2003-02-07 | 2004-08-12 | Buck Robert F. | Fine-grained martensitic stainless steel and method thereof |
| US20080000737A1 (en) * | 2005-03-17 | 2008-01-03 | Jfe Steel Corporation, A Corporation Of Japan | Stainless Steel Sheet with Excellent Heat and Corrosion Resistances for Brake Disk |
| US8852361B2 (en) * | 2005-03-17 | 2014-10-07 | Jfe Steel Corporation | Stainless steel sheet with excellent heat and corrosion resistances for brake disk |
| EP1988182A1 (en) * | 2006-02-06 | 2008-11-05 | Babcock-Hitachi Kabushiki Kaisha | Ferritic heat-resistant steel |
| US20090007991A1 (en) * | 2006-02-06 | 2009-01-08 | Toshio Fujita | Ferritic Heat-Resistant Steel |
| US20110017355A1 (en) * | 2006-02-06 | 2011-01-27 | Toshio Fujita | Ferritic heat-resistant steel |
| EP1988182A4 (en) * | 2006-02-06 | 2013-10-16 | Babcock Hitachi Kk | Ferritic heat-resistant steel |
| US20140086755A1 (en) * | 2011-06-07 | 2014-03-27 | Borgwarner Inc. | Turbocharger and component therefor |
| US10246765B2 (en) * | 2014-01-17 | 2019-04-02 | Nippon Steel & Sumitomo Metal Corporation | Martensitic Cr-containing steel and oil country tubular goods |
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