US2677610A - High temperature alloy steel and articles made therefrom - Google Patents
High temperature alloy steel and articles made therefrom Download PDFInfo
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- US2677610A US2677610A US252993A US25299351A US2677610A US 2677610 A US2677610 A US 2677610A US 252993 A US252993 A US 252993A US 25299351 A US25299351 A US 25299351A US 2677610 A US2677610 A US 2677610A
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- US
- United States
- Prior art keywords
- alloy
- alloy steel
- high temperature
- molybdenum
- tungsten
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- 229910000851 Alloy steel Inorganic materials 0.000 title description 7
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 22
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 12
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 12
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 12
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 12
- 229910052799 carbon Inorganic materials 0.000 claims description 12
- 229910052750 molybdenum Inorganic materials 0.000 claims description 12
- 239000011733 molybdenum Substances 0.000 claims description 12
- 229910052719 titanium Inorganic materials 0.000 claims description 12
- 239000010936 titanium Substances 0.000 claims description 12
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 12
- 229910052721 tungsten Inorganic materials 0.000 claims description 12
- 239000010937 tungsten Substances 0.000 claims description 12
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 11
- 229910052804 chromium Inorganic materials 0.000 claims description 11
- 239000011651 chromium Substances 0.000 claims description 11
- 229910052759 nickel Inorganic materials 0.000 claims description 11
- 229910052710 silicon Inorganic materials 0.000 claims description 11
- 239000010703 silicon Substances 0.000 claims description 11
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims description 9
- 229910052748 manganese Inorganic materials 0.000 claims description 9
- 239000011572 manganese Substances 0.000 claims description 9
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 8
- 239000005864 Sulphur Substances 0.000 claims description 8
- 239000012535 impurity Substances 0.000 claims description 7
- 229910052742 iron Inorganic materials 0.000 claims description 6
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims 1
- 229910052698 phosphorus Inorganic materials 0.000 claims 1
- 239000011574 phosphorus Substances 0.000 claims 1
- 229910045601 alloy Inorganic materials 0.000 description 18
- 239000000956 alloy Substances 0.000 description 18
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 10
- 238000005275 alloying Methods 0.000 description 9
- 229910000859 α-Fe Inorganic materials 0.000 description 8
- BHEPBYXIRTUNPN-UHFFFAOYSA-N hydridophosphorus(.) (triplet) Chemical compound [PH] BHEPBYXIRTUNPN-UHFFFAOYSA-N 0.000 description 7
- 229910000831 Steel Inorganic materials 0.000 description 5
- 229910001566 austenite Inorganic materials 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 238000004458 analytical method Methods 0.000 description 3
- 239000000470 constituent Substances 0.000 description 3
- 239000011159 matrix material Substances 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 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 2
- 239000000463 material Substances 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 150000001247 metal acetylides Chemical class 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000000717 retained effect Effects 0.000 description 2
- 238000003483 aging Methods 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000004881 precipitation hardening Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 238000011272 standard treatment Methods 0.000 description 1
- 238000010301 surface-oxidation reaction Methods 0.000 description 1
- 238000011282 treatment Methods 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
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel 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
- C22C38/60—Ferrous alloys, e.g. steel alloys containing lead, selenium, tellurium, or antimony, or more than 0.04% by weight of sulfur
Definitions
- the present invention relates to high temperature alloy steels and articles made therefrom and, more particularly, to an alloy steel and articles having good load-carrying ability at high temperatures.
- the alloy which I have provided contains as essential alloying constituents silicon, manganese, chromium, nickel, molybdenum, tungsten and titanium, together with carbon in certain balanced proportions which I have found required to produce the desired load-carrying ability at high temperatures.
- the desired balance between the antithetical properties of high resistance to deformation and rupture on the one hand, and of ductility on the other hand may be controlled by varying the percentages of the austenite formers, carbon, manganese and nickel, on the one hand, and of the ferrite formers, molybdenum, silicon, chromium, tungsten and titanium, on the other hand.
- the steel which I provide has carbon and alloying constituents within the following ranges:
- the alloy of my invention can be readily formed into desired shapes by forging, rolling and castmg.
- this material When properly fabricated and treated, this material has the following properties, among others:
- (f) It may be softened, i. e., annealed, by rapid cooling from high temperatures.
- a stress-relief anneal at intermediate temperatures preserves the as-worked properties and promotes machinability.
- compositions will vary somewhat as regards physical properties, depending not only on processing variables, but also on the balance of the two general classes of alloying elements within the compositions, namely, carbide and ferrite formers and austenite formers.
- the carbide and ferrite formers are chromium, molybdenum, tungsten, titanium and silicon. An increase in any or all of these ferrite and carbide formers tends to promote the presence of ferrite which enhances certain of the metallurgical properties.
- the austenite formers namely, carbon, nickel and manganese, are effective in forming autenite in the order named.
- the remainder of the various analyses set forth above is substantially iron and elements which are not subversive to the action of the essential alloying elements there enumerated in producing good load-carrying ability at elevated temperatures.
- the balance may be substantially commercial steel which may contain the usual impurities, residuals or minor amounts of alloying elements coming from the scrap or introduced during the melting, deoxidation, etc. or the alloy. The usual impurities, residuals or minor amounts of alloying elements are not subversive to the action of the essential alloying elements above enumerated in producing good loadcarrying ability at elevated temperatures.
- the alloy can be made in accordance with the usual melting practice of the alloy steel industry.
- the usual practice is to cast the metal into ingots and forge or roll it into billets or slabs.
- the billets and slabs are then hot formed into the desired shapes which are then stress-relieved by soaking at intermediate temperatures or annealed by rapid cooling from high temperatures.
- stress-relieving is meant the heating through of the entire section to arrive at a uniform temperature. This standard treatment has been found to increase the machinability of the alloy over the as-worked or annealed condition.
- An alloy steel characterized by high loadcarrying ability at elevated temperatures and containing carbon .28 to .35%, manganese .75 to 1.5%, silicon .30 to .80%, chromium 18.0 to 21.0%, nickel 8.0 to 11.0%, molybdenum 1.0 to 2.0%, tungsten 1.0 to 2.0%, titanium .40 to .90%, sulphur .40% maximum and phosphorous .20% maximum, the balance being all iron except for incidental impurities.
- An alloy steel characterized by high loadcarrying ability at elevated temperatures and containing carbon .30%, manganese 1.25%, silicon 55%, chromium 19.0%, nickel 9.0%, molybdenum 1.5%, tungsten 1.25%, titanium .60%, sulphur 04% maximum and phosphorous 03% maximum, the balance being all iron except for incidental impurities.
- An alloy steel characterized by high loadcarrying ability at elevated temperatures and containing carbon .28 to 55%, manganese .75 to 1.5%, silicon .30 to .80%, chromium 18.0 to 21.0%, nickel 8.0 to 11.0%, molybdenum 1.0 to 2.0%, tungsten 1.0 to 2.0%, titanium .40 to sulphur 40% maximum and phosphorous 20% maximum, the balance being all iron except for incidental impurities, said steel having a structure consisting predominantly of an austenitic matrix, together with minor proportions of ferrite and carbide and characterized by great resistance to deformation and rupture under load at high temperatures, together with retention of ductility under load.
- Articles which require high load-carrying ability at elevated temperatures formed from an alloy containing carbon .28 to 35%, manganese .75 to 1.5%, silicon .30 to .80%, chromium 18.0 to 21.0%, nickel 8.0 to 11.0%, molybdenum 1.0 to 2.0%, tungsten 1.0 to 2.0%, titanium .40 to 90%, sulphur 40% maximum and phosphorous 20% maximum, the balance being all iron except for incidental impurities.
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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)
Description
Patented May 4, 1954 HIGH TEMPERATURE ALLOY STEEL AND ARTICLES MADE THEREFROM Charles '1. Evans, Jr., Belmont, Pa., assignor to Universal-Cyclops Steel Corporation, Bridgeville, Pa, a corporation of Pennsylvania No Drawing. Application October 24, 1951, Serial No. 252,993
4: Claims. 1
The present invention relates to high temperature alloy steels and articles made therefrom and, more particularly, to an alloy steel and articles having good load-carrying ability at high temperatures.
In relatively recent years, various machines have been developed, such as gas turbines, superchargers and jet-propelled aircraft, etc., in which various parts are subjected to dynamic stresses which are fairly high and which must be withstood at high temperatures over a considerable period of time. Such machines will not perform their functions successfully unless they can operate at much higher stresses and/or temperatures than were believed practicable a few years ago. The life of a supercharger or gas turbine, for example, is necessarily limited by the load-carrying ability of the parts which are subjected to stress at high temperatures. Such parts are also required to resist the corrosive attack of combustion gases at the high temperatures encountered in use.
I have discovered an alloy having unique and exceptionally good load-carrying abilities at high temperatures and which, therefore, is exceptionally adapted for the uses mentioned above, and other kindred uses. The alloy which I have provided contains as essential alloying constituents silicon, manganese, chromium, nickel, molybdenum, tungsten and titanium, together with carbon in certain balanced proportions which I have found required to produce the desired load-carrying ability at high temperatures. More specifical- 1y, I have discovered that, by employing a balanced combination of three alloying elements, namely, tungsten, molybdenum and titanium, in relatively small amounts in an austenitic matrix, an alloy has resulted which, while possessing exceptionally high resistance to stresses at high temperatures, is, nevertheless, an alloy which can be readily worked both hot and cold and fabricated in the mill with a minimum of loss and which has a considerable ductility and resistance to shock and stability against age hardening. The alloy which I provide has a predominant austenitic matrix with minor percentages of ferrite and carbides. In my novel alloy, the desired balance between the antithetical properties of high resistance to deformation and rupture on the one hand, and of ductility on the other hand, may be controlled by varying the percentages of the austenite formers, carbon, manganese and nickel, on the one hand, and of the ferrite formers, molybdenum, silicon, chromium, tungsten and titanium, on the other hand.
The steel which I provide has carbon and alloying constituents within the following ranges:
Carbon .10-.50 Manganese .20-3.00 Silicon .20-3.00 Chromium 15.00-25.00 Nickel 52.00-25.00 Molybdenum .50-400 Tungsten .50-400 Titanium .10-2.00 Sulphur .40 max. Phosphorous .20 max.
In practice, I prefer that the alloy have constituents within the following preferred ranges:
*Carbon .28-.35 Manganese .75-1.50 Silicon .30-.80 Chromium 18.00-21.00 Nickel 55.00-11.00 Molybdenum 1.00-2.00 Tungsten 1.00-2.00 Titanium .40-00 Sulphur .40 max. Phosphorous .20 max.
A typical analysis of my alloy is as follows:
Carbon .30 Manganese 1.25 Silicon .55 Chromium 19.00 Nickel 9.00 Molybdenum 1.50 Tungsten 1- 1.25 Titanium .60 Sulphur .04 Phosphorous .03
The alloy of my invention can be readily formed into desired shapes by forging, rolling and castmg.
When properly fabricated and treated, this material has the following properties, among others:
(a) High temperature load-carrying ability through 1350 F., which, so far as I am aware, is exceeded by no known Wrought materials which do not contain at least one other alloying element and which is only equalled by analyses of much higher alloy content.
(1)) High temperature load-carrying ability through 1500 F.
(c) Suitability for low stress service through 1800 F.
(d) It is susceptible to the effects of cold-Work or hot-cold-work to produce exceptionally high strengths. Load-carrying ability is also improved from the hot-worked condition by solution treatments at high temperatures.
(c) It is not susceptible to precipitation hardening effects to any appreciable degree and possesses a high degree of surface and structural stability.
(f) It may be softened, i. e., annealed, by rapid cooling from high temperatures. A stress-relief anneal at intermediate temperatures preserves the as-worked properties and promotes machinability.
(g) It is quite readily machinable, exceeding many of the more familiar austenitic alloys in this characteristic.
(h) Adequate surface oxidation resistance is obtained through 1800 F. It is quite resistant to grain boundary oxidation, and the fine grain structure is retained at elevated temperatures.
(1') It possesses a high degree of resistance to both reducing and oxidizing corroding media and by heat treatment can be made resistant to intergranular attack.
(7') It is readily workable and can be formed into various shapes commonly used.
(is) It possesses a good balance of elastic strength and ductility at both room temperature and at high temperatures. Sufficient ductility is retained even after prolonged exposure under load at elevated temperatures and relatively high impact characteristics are also maintained.
Alloys coming Within the composition ranges specified above will vary somewhat as regards physical properties, depending not only on processing variables, but also on the balance of the two general classes of alloying elements within the compositions, namely, carbide and ferrite formers and austenite formers. The carbide and ferrite formers are chromium, molybdenum, tungsten, titanium and silicon. An increase in any or all of these ferrite and carbide formers tends to promote the presence of ferrite which enhances certain of the metallurgical properties. The austenite formers, namely, carbon, nickel and manganese, are effective in forming autenite in the order named. An increase in any or all of these austenite formers tends to inhibit the presence of ferrite and insure a uniform structure of austenite and carbides, and, therefore, enhances certain of the metallurgical properties. The remainder of the various analyses set forth above is substantially iron and elements which are not subversive to the action of the essential alloying elements there enumerated in producing good load-carrying ability at elevated temperatures. The balance may be substantially commercial steel which may contain the usual impurities, residuals or minor amounts of alloying elements coming from the scrap or introduced during the melting, deoxidation, etc. or the alloy. The usual impurities, residuals or minor amounts of alloying elements are not subversive to the action of the essential alloying elements above enumerated in producing good loadcarrying ability at elevated temperatures.
The alloy can be made in accordance with the usual melting practice of the alloy steel industry. The usual practice is to cast the metal into ingots and forge or roll it into billets or slabs. The billets and slabs are then hot formed into the desired shapes which are then stress-relieved by soaking at intermediate temperatures or annealed by rapid cooling from high temperatures. By stress-relieving is meant the heating through of the entire section to arrive at a uniform temperature. This standard treatment has been found to increase the machinability of the alloy over the as-worked or annealed condition.
While this alloy can be readily forged, rolled and machined in the making of machine parts, it also may be made into castings.
While I have specifically described preferred embodiments of my invention, it is to be understood that the invention is not so limited but may be otherwise embodied or practiced within the scope of the following claims.
I claim:
1. An alloy steel characterized by high loadcarrying ability at elevated temperatures and containing carbon .28 to .35%, manganese .75 to 1.5%, silicon .30 to .80%, chromium 18.0 to 21.0%, nickel 8.0 to 11.0%, molybdenum 1.0 to 2.0%, tungsten 1.0 to 2.0%, titanium .40 to .90%, sulphur .40% maximum and phosphorous .20% maximum, the balance being all iron except for incidental impurities.
2. An alloy steel characterized by high loadcarrying ability at elevated temperatures and containing carbon .30%, manganese 1.25%, silicon 55%, chromium 19.0%, nickel 9.0%, molybdenum 1.5%, tungsten 1.25%, titanium .60%, sulphur 04% maximum and phosphorous 03% maximum, the balance being all iron except for incidental impurities.
3. An alloy steel characterized by high loadcarrying ability at elevated temperatures and containing carbon .28 to 55%, manganese .75 to 1.5%, silicon .30 to .80%, chromium 18.0 to 21.0%, nickel 8.0 to 11.0%, molybdenum 1.0 to 2.0%, tungsten 1.0 to 2.0%, titanium .40 to sulphur 40% maximum and phosphorous 20% maximum, the balance being all iron except for incidental impurities, said steel having a structure consisting predominantly of an austenitic matrix, together with minor proportions of ferrite and carbide and characterized by great resistance to deformation and rupture under load at high temperatures, together with retention of ductility under load.
4. Articles which require high load-carrying ability at elevated temperatures formed from an alloy containing carbon .28 to 35%, manganese .75 to 1.5%, silicon .30 to .80%, chromium 18.0 to 21.0%, nickel 8.0 to 11.0%, molybdenum 1.0 to 2.0%, tungsten 1.0 to 2.0%, titanium .40 to 90%, sulphur 40% maximum and phosphorous 20% maximum, the balance being all iron except for incidental impurities.
References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 2,373,490 Mohling Apr. 10, 1945 2,416,515 Evans Feb. 25, 1947 2,432,615 Franks Dec. 16, 1947 2,536,033 Clarke Jan. 2, 1951 2,556,373 Kirkbyet al June 12, 1951 FOREIGN PATENTS Number Country Date 267,444 Switzerland July 1, 1950
Claims (1)
1. AN ALLOY STEEL CHARACTERIZED BY HIGH LOADCARRYING ABILITY AT ELEVATED TEMPERATURES AND CONTAINING CARBON .28 TO .35%, MANGANESE .75 TO 1.5%, SILICON .30 TO .80%, CHROMIUM 18.0 TO 21.0%, NICKEL 8.0 TO 11.0%, MOLYBDENUM 1.0 TO 2.0%, TUNGSTEN 1.0 TO 2.0%, TITANIUM .40 TO .90%, SULPHUR .40% MAXIMUM AND PHOSPHORUS .20% MAXIMUM, THE BALANCE BEING ALL IRON EXCEPT FOR INCIDENTAL IMPURITIES.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US252993A US2677610A (en) | 1951-10-24 | 1951-10-24 | High temperature alloy steel and articles made therefrom |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US252993A US2677610A (en) | 1951-10-24 | 1951-10-24 | High temperature alloy steel and articles made therefrom |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US2677610A true US2677610A (en) | 1954-05-04 |
Family
ID=22958399
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US252993A Expired - Lifetime US2677610A (en) | 1951-10-24 | 1951-10-24 | High temperature alloy steel and articles made therefrom |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US2677610A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2872311A (en) * | 1955-11-14 | 1959-02-03 | Birmingham Small Arms Co Ltd | Poweder metal compacts |
| US3309242A (en) * | 1964-10-01 | 1967-03-14 | United States Steel Corp | High-carbon precipitation-hardening austenitic steel alloy |
| US3575381A (en) * | 1968-08-23 | 1971-04-20 | Dresser Ind | Valve seat construction |
| US3856516A (en) * | 1970-02-12 | 1974-12-24 | Blair Knox Co | Low creep high strength ferrous alloy |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2373490A (en) * | 1943-01-23 | 1945-04-10 | Allegheny Ludlum Steel | Heat-resisting alloys |
| US2416515A (en) * | 1943-11-08 | 1947-02-25 | Universal Cyclops Steel Corp | High temperature alloy steel and articles made therefrom |
| US2432615A (en) * | 1945-06-13 | 1947-12-16 | Electric Metallurg Company | Iron-base alloys |
| CH267444A (en) * | 1943-11-22 | 1950-03-31 | Electric Furnace Prod Co | Alloy. |
| US2536033A (en) * | 1948-05-14 | 1951-01-02 | Armco Steel Corp | High-temperature stainless steel |
| US2556373A (en) * | 1949-08-23 | 1951-06-12 | Thos Firth & John Brown Ltd | Alloy steels for use at elevated temperatures |
-
1951
- 1951-10-24 US US252993A patent/US2677610A/en not_active Expired - Lifetime
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2373490A (en) * | 1943-01-23 | 1945-04-10 | Allegheny Ludlum Steel | Heat-resisting alloys |
| US2416515A (en) * | 1943-11-08 | 1947-02-25 | Universal Cyclops Steel Corp | High temperature alloy steel and articles made therefrom |
| CH267444A (en) * | 1943-11-22 | 1950-03-31 | Electric Furnace Prod Co | Alloy. |
| US2432615A (en) * | 1945-06-13 | 1947-12-16 | Electric Metallurg Company | Iron-base alloys |
| US2536033A (en) * | 1948-05-14 | 1951-01-02 | Armco Steel Corp | High-temperature stainless steel |
| US2556373A (en) * | 1949-08-23 | 1951-06-12 | Thos Firth & John Brown Ltd | Alloy steels for use at elevated temperatures |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2872311A (en) * | 1955-11-14 | 1959-02-03 | Birmingham Small Arms Co Ltd | Poweder metal compacts |
| US3309242A (en) * | 1964-10-01 | 1967-03-14 | United States Steel Corp | High-carbon precipitation-hardening austenitic steel alloy |
| US3575381A (en) * | 1968-08-23 | 1971-04-20 | Dresser Ind | Valve seat construction |
| US3856516A (en) * | 1970-02-12 | 1974-12-24 | Blair Knox Co | Low creep high strength ferrous alloy |
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