US3758294A - Rburization refractory iron base alloy resistant to high temperatures and to reca - Google Patents
Rburization refractory iron base alloy resistant to high temperatures and to reca Download PDFInfo
- Publication number
- US3758294A US3758294A US00060658A US3758294DA US3758294A US 3758294 A US3758294 A US 3758294A US 00060658 A US00060658 A US 00060658A US 3758294D A US3758294D A US 3758294DA US 3758294 A US3758294 A US 3758294A
- Authority
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- United States
- Prior art keywords
- alloy
- niobium
- resistance
- carbon
- tungsten
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- 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
- 239000000956 alloy Substances 0.000 title abstract description 37
- 229910045601 alloy Inorganic materials 0.000 title abstract description 37
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title description 10
- 229910052742 iron Inorganic materials 0.000 title description 5
- 101100355584 Mus musculus Rad51 gene Proteins 0.000 title 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract description 22
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 21
- 229910052799 carbon Inorganic materials 0.000 abstract description 21
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 abstract description 17
- 229910052758 niobium Inorganic materials 0.000 abstract description 16
- 239000010955 niobium Substances 0.000 abstract description 16
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 abstract description 14
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 abstract description 14
- 229910052721 tungsten Inorganic materials 0.000 abstract description 14
- 239000010937 tungsten Substances 0.000 abstract description 14
- 229910052757 nitrogen Inorganic materials 0.000 abstract description 11
- 229910052804 chromium Inorganic materials 0.000 abstract description 9
- 239000011651 chromium Substances 0.000 abstract description 9
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 abstract description 8
- 238000005255 carburizing Methods 0.000 abstract description 7
- 229910052759 nickel Inorganic materials 0.000 abstract description 7
- 239000012535 impurity Substances 0.000 abstract description 6
- 229910052710 silicon Inorganic materials 0.000 abstract description 6
- 239000010703 silicon Substances 0.000 abstract description 6
- 239000003795 chemical substances by application Substances 0.000 abstract description 5
- 230000007797 corrosion Effects 0.000 abstract description 5
- 238000005260 corrosion Methods 0.000 abstract description 5
- 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 abstract description 3
- 229910000831 Steel Inorganic materials 0.000 description 9
- 239000010959 steel Substances 0.000 description 9
- 239000000203 mixture Substances 0.000 description 6
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 5
- 230000003647 oxidation Effects 0.000 description 4
- 238000007254 oxidation reaction Methods 0.000 description 4
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 3
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 3
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 3
- 239000005864 Sulphur Substances 0.000 description 3
- 229910052748 manganese Inorganic materials 0.000 description 3
- 239000011572 manganese Substances 0.000 description 3
- 229910052698 phosphorus Inorganic materials 0.000 description 3
- 239000011574 phosphorus Substances 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 229910052750 molybdenum Inorganic materials 0.000 description 2
- 239000011733 molybdenum Substances 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- -1 chromium carbides Chemical class 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 150000001247 metal acetylides Chemical class 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000000197 pyrolysis Methods 0.000 description 1
- 238000002407 reforming Methods 0.000 description 1
- 239000007787 solid 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
- 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
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
-
- 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
- C22C38/48—Ferrous alloys, e.g. steel alloys containing chromium with nickel with niobium or tantalum
Definitions
- the present invention relates to an iron-base alloy as well as to work pieces and component parts made from such an alloy.
- Such alloys should offer a good creep resistance at high temperatures as well as a good corrosion resistance in particular to oxidation at a high temperature.
- alloys should have a good thermal shock resistance and preferably a good weldability.
- the alloy according to the present invention obviates the drawbacks of the well known alloys and may be used as a component material for furnaces or ovens since it exhibits all the above-mentioned properties at the same time.
- the alloy according to the present invention is of the known kind containing carbon, chromium, nickel, manganese, silicon, niobium with the usual impurities and it is characterized in that it contains 0.3 to 4.5% of tungsten, 1.0 to 8% of niobium and 0.02 to 0.25% of nitrogen (weight ratios).
- this alloy In the temperature range extending up to at least 1,200 C., this alloy exhibits high mechanical strength and low creep rate characteristics associated with a very good resistance to recarburization and to corrosion in general, in particular by oxidation.
- This alloy further exhibits a good weldability and a good thermal shock resistance.
- the aforesaid properties enable the use of said steels in furnaces where recarburization promoting conditions are combined, which recarburization does not take place, contrary to what occurred under the same circumstances, with previously known steels, especially when the temperature became higher than about 700 C.
- said alloy contains 0.5 to 3% of tungsten and 1.0 to 3% of niobium; abiding by these particular limits of composition, as regards tungsten and niobium, enables to obtain an alloy having a specially high weldability.
- the tungsten contents by weight ranges from 1.40 to 2.0% and that of niobium ranges from 1.0 to 1.8% by weight, thereby yielding the most etiicient steel from the standpoint of resistance to carburization, creep resistance, resistance to oxidation and welding easiness.
- weight ratios of elements other than tungsten, niobium and nitrogen may vary within fairly wide proportions. Preferably these proportions should be such that the alloy according to the present invention have the following composition, the percentages being expressed by Weight:
- the weight ratios of the various components of the alloy according to the present invention are the following:
- the reference numeral I designates a steel according to the present invention, the other steels being not a part thereof.
- EXAMPLE 1 Creep tests have been carried out at a temperature of 950 C. during 1,000 and 10,000 hours in order to appraise the action of alloy elements such as niobium, tungsten, nitrogen and molybdenum upon the properties under hot conditions of a basic alloy containing about 0.40% of carbon, 33% of nickel and 25% of chromium, the other elements being comparable.
- alloy elements such as niobium, tungsten, nitrogen and molybdenum upon the properties under hot conditions of a basic alloy containing about 0.40% of carbon, 33% of nickel and 25% of chromium, the other elements being comparable.
- Table 4 specifies the percentages by weight or weight ratios of the other components of the alloys subjected to said tests as well as the increase in the carbon content of the second layer having a thickness of 0.5 mm. when starting from the inside of the tube as well as that corresponding to the middle of the thickness of the tube and this for each tested grade or quality:
- the nitrogen decreases the formation of chromium carbides and accordingly restrains the carbon penetration.
- Tungsten and niobium form stable carbides which also impede the carbon penetration.
- the present invention is of course not at all limited to the forms of embodiments described which have been given by way of example only. In particular it comprises all the means forming technical equivalents to the means described as well as their combinations if same are caried out. according to the gist of the invention.
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
- Heat Treatments In General, Especially Conveying And Cooling (AREA)
Abstract
AN IRON-BASE ALLOY HAVING A GOOD CREEP RESISTANCE AT HIGH TEMPERATURE, A GOOD CORROSION RESISTANCE UP TO AT LEAST 1,200*C. AND A HIGH RESISTANCE TO CARBON RESTORATION OR RECARBURIZATION BY CARBURIZING AGENTS AND CONTAINING CARBON, NICKEL, CHROMIUM, MANGANESE, SILICON, NIOBIUM WITH THE USUAL IMPURITIES AND WHEREIN THE IMPROVEMENT CONSISTS IN THAT SAID ALLOY CONTAINS 0.3 TO 4.5% OF TUNGSTEN, 1.0 TO 8% OF NIOBIUM AND 0.02 TO 0.25% OF NITROGEN.
Description
United States Patent US. Cl. 75122 1 Claim ABSTRACT OF THE DISCLOSURE An iron-base alloy having a good creep resistance at high temperature, a good corrosion resistance up to at least 1,200 C. and a high resistance to carbon restoration or recarburization by carburizing agents and containing carbon, nickel, chromium, manganese, silicon, niobium with the usual impurities and wherein the improvement consists in that said alloy contains 0.3 to 4.5% of tungsten, 1.0 to 8% of niobium and 0.02 to 0.25% of nitrogen.
The present invention relates to an iron-base alloy as well as to work pieces and component parts made from such an alloy.
There is presently a need for industrial alloys likely to offer a high resistance to recarburization or carbon restoration by carburizing agents; this is for example the case for alloys used for making component parts for solid and gas carburizing or case-hardening furnaces or for petrochemistry ovens or furnaces in particular for cracking hydrocarbons through pyrolysis and other reforming processes.
Such alloys should offer a good creep resistance at high temperatures as well as a good corrosion resistance in particular to oxidation at a high temperature.
Finally these alloys should have a good thermal shock resistance and preferably a good weldability.
'Ihe presently known alloys which are most likely or adapted to resist creep and hot corrosion do not exhibit all of the above-mentioned characterizing features and among these the most important of all, namely the resist ance to recarburization by the carburizing agents.
Contrary thereto the alloy according to the present invention obviates the drawbacks of the well known alloys and may be used as a component material for furnaces or ovens since it exhibits all the above-mentioned properties at the same time.
The alloy according to the present invention is of the known kind containing carbon, chromium, nickel, manganese, silicon, niobium with the usual impurities and it is characterized in that it contains 0.3 to 4.5% of tungsten, 1.0 to 8% of niobium and 0.02 to 0.25% of nitrogen (weight ratios).
In the temperature range extending up to at least 1,200 C., this alloy exhibits high mechanical strength and low creep rate characteristics associated with a very good resistance to recarburization and to corrosion in general, in particular by oxidation.
This alloy further exhibits a good weldability and a good thermal shock resistance.
The aforesaid properties enable the use of said steels in furnaces where recarburization promoting conditions are combined, which recarburization does not take place, contrary to what occurred under the same circumstances, with previously known steels, especially when the temperature became higher than about 700 C.
The applicants could show that the outstanding resistance to carburization was due to the simultaneous presence of the tungsten, niobium and nitrogen elements in the above-mentioned proportions or relative amounts.
According to a preferred embodiment of the present invention, said alloy contains 0.5 to 3% of tungsten and 1.0 to 3% of niobium; abiding by these particular limits of composition, as regards tungsten and niobium, enables to obtain an alloy having a specially high weldability.
According to a further characterizing feature of the present invention corresponding to said preferred embodiment, the tungsten contents by weight ranges from 1.40 to 2.0% and that of niobium ranges from 1.0 to 1.8% by weight, thereby yielding the most etiicient steel from the standpoint of resistance to carburization, creep resistance, resistance to oxidation and welding easiness.
The weight ratios of elements other than tungsten, niobium and nitrogen may vary within fairly wide proportions. Preferably these proportions should be such that the alloy according to the present invention have the following composition, the percentages being expressed by Weight:
Percent Carbon 0.05 to 0.85 Chromium 20 to 35 Nickel 22 to 40 Manganese 0.2 to 4 Silicon 0.2 to 3 Tungsten 0.3 to 4.5 Niobium 1.0 to 8 Nitrogen 0.02 to 0.25 Phosphorus Below 0.05 Sulphur Less than 0.05 The remainder being iron with the usual impurities which should be present in the least or smallest possible residual amount.
In the case of a steel having the optimum welding characteristics, the weight ratios of the various components of the alloy according to the present invention are the following:
the remainder being iron with the usual impurities least or smallest possible residual amount.
Eventually the following composition is that corresponding to the optimisation of all the properties of the steel from the standpoint of resistance to carburization. creep resistance, resistance to oxidation and welding easiness: I
Percent Carbon About 0.40 Chromium About 25 to 28 Nickel About 32 to 36 Manganese About 0.50 to 1.0 Silicon About 1.20 to 1.60 Tungsten About 1.40 to 2.0 Niobium About 1.0 to 1:8 Nitrogen About 0.15 Phosphorus and sulphur 1 In the least possible amounts.
the remainder being iron with the usual impurities reduced to a minimum.
Further characterizing features of the invention will appear in the course of the following description of three examples the first of which relates to a creep test and the two others relate to carburization tests. In all these examples, the reference numeral I designates a steel according to the present invention, the other steels being not a part thereof.
EXAMPLE 1 Creep tests have been carried out at a temperature of 950 C. during 1,000 and 10,000 hours in order to appraise the action of alloy elements such as niobium, tungsten, nitrogen and molybdenum upon the properties under hot conditions of a basic alloy containing about 0.40% of carbon, 33% of nickel and 25% of chromium, the other elements being comparable.
The results obtained are specified in the following table:
TAB LE 1 Creep resistance in heetobars The results obtained show that the alloy I according to the invention exhibits one of the best creep resistances among the tested steels.
Other creep resistances by breaking under tension at higher temperatures in the range of 1,050 C. to 1,200 C. for very long times have also borne out the superiority of the alloy forming the subject matter of the present incarburization depth limit. These tests are summarized in the following Table 3 (the'steel according to the invention is the same as that of Example 1) TABLE 3 Carbon content after case-hardening at 1,150 C. to
Further carburization tests have been carried out in an industrial furnace which has been kept in use for a year at a temperature of l,050 C. and which contained composite tubes made of various alloys arranged the ones after the others so that they be subjected to the same temperatures and to the same carburizing gas. After segmenting of the tube or pipe, the carbon content has been determined for each alloy in successive layers with thicknesses of 0.5 mm. as well on tube portions remaining raw as on portions machined along the inner diameter. All the alloys subjected to the test were iron-base alloys containing about 0.40% of carbon, the alloy I according to the invention being the same as in Examples 1 and 2.
The following Table 4 specifies the percentages by weight or weight ratios of the other components of the alloys subjected to said tests as well as the increase in the carbon content of the second layer having a thickness of 0.5 mm. when starting from the inside of the tube as well as that corresponding to the middle of the thickness of the tube and this for each tested grade or quality:
TABLE 4 Increase in percent by weight in carbon content Raw tube Machined tube Composition in percent Inside Centre Centre at of thickof thick- Ni Cr Nb W Mo N 0.5 mm. ness Inside ness 1 Alloy I.
vention; the results of these further tests are given in Table 2 hereinafter (the basic alloy comprised also about 0.40% of carbon).
TABLE 2 Breaking time in hours at- Composition in percent by weight 1,050 0., 1,200 0., load 2 load 0.7 Nb W Mo N heetobars hectobar EXAMPLE 2 Carburization tests have been carried out with a batch of iron-base alloys (carbon content: about 0.40% by weight) by putting the samples of these alloys into cementation or hardening cases at elevated temperatures. After given periods of time, the carbon content of the case-hardened layers versus or against the depth was analyzed. The results have shown that the layers at a depth of about 0.5 mm. have become richer in carbon and that the layers at a depth of about 5 mm. set the The above table shows the significant improvement brought about by the new alloy as regards the raw tubes or pipes as well as the machined tubes, thereby confirming the results shown in Table 3 while moreover substantiating the detrimental influence of molybdenum.
The easy resistance to carburization of the alloys according to the present invention is due to the simultaneous presence of tungsten, niobium and nitrogen in the amounts stated hereinabove and this could be explained in the following manner:
When forming nitrides in particular with chromium, the nitrogen decreases the formation of chromium carbides and accordingly restrains the carbon penetration.
Tungsten and niobium form stable carbides which also impede the carbon penetration.
The present invention is of course not at all limited to the forms of embodiments described which have been given by way of example only. In particular it comprises all the means forming technical equivalents to the means described as well as their combinations if same are caried out. according to the gist of the invention.
by carburizing agents, said alloy having the following 5 composition:
Percent by weight Carbon About 0.40 Chromium About 25 to 28 Nickel About 32 to 36 Manganese About 0.50 to 1.0 Silicon About 1.20 to 1.60
Tungsten About 1.40 to 2.0 Niobium About 1.0 to 1.8
Nitrogen About 0.15
Percentage by weight Phosphorus Below 0.05 Sulphur Below 0.05
the remainder being substantially iron.
References Cited UNITED STATES PATENTS 3,552,950 1/1971 Rundell 75l28 w x 3,563,729 2/1971 Kovach 75--128 w 1,991,438 2/1935 Wohrman 75-128 w x 3,306,736 2/1967 Rundell 75 12s G 3,627,516 12/1971 136116161. a1. 75-128 G L. DEWAYNE RUTLE'DGE, Primary Examiner us. 01. X.R.
75-128 G, 128 N, 128 W, 134 F
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7010371A FR2082658A5 (en) | 1970-03-23 | 1970-03-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US3758294A true US3758294A (en) | 1973-09-11 |
Family
ID=9052727
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US00060658A Expired - Lifetime US3758294A (en) | 1970-03-23 | 1970-08-03 | Rburization refractory iron base alloy resistant to high temperatures and to reca |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US3758294A (en) |
| JP (1) | JPS4927725B1 (en) |
| BE (1) | BE790197Q (en) |
| DE (1) | DE2037648C3 (en) |
| FR (1) | FR2082658A5 (en) |
| GB (1) | GB1271033A (en) |
| NL (1) | NL165789C (en) |
| SU (1) | SU858573A3 (en) |
Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3844774A (en) * | 1973-09-24 | 1974-10-29 | Carondelet Foundry Co | Corrosion-resistant alloys |
| US3859083A (en) * | 1972-05-17 | 1975-01-07 | Honda R & D Co Ltd | Cast alloy for valve seat-insert |
| US3947266A (en) * | 1974-05-17 | 1976-03-30 | Carondelet Foundry Company | Corrosion-resistant alloys |
| US4026699A (en) * | 1976-02-02 | 1977-05-31 | Huntington Alloys, Inc. | Matrix-stiffened heat and corrosion resistant alloy |
| US4033767A (en) * | 1975-09-19 | 1977-07-05 | Chas. S. Lewis & Co., Inc. | Ductile corrosion resistant alloy |
| US4058416A (en) * | 1976-02-02 | 1977-11-15 | Huntington Alloys, Inc. | Matrix-stiffened heat and corrosion resistant wrought products |
| US4063934A (en) * | 1975-12-02 | 1977-12-20 | Acieries Du Manoir Pompey | Heat resisting nickel-chromium alloy having high resistance to oxidation, carburization and creep at high temperatures |
| US4119456A (en) * | 1977-01-31 | 1978-10-10 | Steel Founders' Society Of America | High-strength cast heat-resistant alloy |
| US4126447A (en) * | 1977-10-31 | 1978-11-21 | Crucible Inc. | Lanthanum-modified high-temperature alloy |
| US4329173A (en) * | 1980-03-31 | 1982-05-11 | Carondelet Foundry Company | Alloy resistant to corrosion |
| US4410362A (en) * | 1981-01-12 | 1983-10-18 | Kubota Ltd. | Heat resistant cast iron-nickel-chromium alloy |
| US4448749A (en) * | 1981-10-12 | 1984-05-15 | Kubota Ltd. | Heat resistant cast iron-nickel-chromium alloy |
| US4853185A (en) * | 1988-02-10 | 1989-08-01 | Haynes International, Imc. | Nitrogen strengthened Fe-Ni-Cr alloy |
| WO1991016467A1 (en) * | 1990-04-16 | 1991-10-31 | Carondelet Foundry Company | Heat resistant alloys |
| US5077006A (en) * | 1990-07-23 | 1991-12-31 | Carondelet Foundry Company | Heat resistant alloys |
| US5126107A (en) * | 1988-11-18 | 1992-06-30 | Avesta Aktiebolag | Iron-, nickel-, chromium base alloy |
| US5194221A (en) * | 1992-01-07 | 1993-03-16 | Carondelet Foundry Company | High-carbon low-nickel heat-resistant alloys |
| US5516485A (en) * | 1994-03-17 | 1996-05-14 | Carondelet Foundry Company | Weldable cast heat resistant alloy |
| US5603891A (en) * | 1991-09-11 | 1997-02-18 | Krupp Vdm Gmbh | Heat resistant hot formable austenitic nickel alloy |
| US20060157161A1 (en) * | 2005-01-19 | 2006-07-20 | Govindarajan Muralidharan | Cast, heat-resistant austenitic stainless steels having reduced alloying element content |
| US11981875B2 (en) | 2018-12-20 | 2024-05-14 | Exxonmobil Chemical Patents Inc. | Erosion resistant alloy for thermal cracking reactors |
-
0
- BE BE790197D patent/BE790197Q/en not_active IP Right Cessation
-
1970
- 1970-03-23 FR FR7010371A patent/FR2082658A5/fr not_active Expired
- 1970-07-29 DE DE2037648A patent/DE2037648C3/en not_active Expired
- 1970-07-30 GB GB36944/70A patent/GB1271033A/en not_active Expired
- 1970-08-03 US US00060658A patent/US3758294A/en not_active Expired - Lifetime
- 1970-08-17 JP JP45071450A patent/JPS4927725B1/ja active Pending
- 1970-09-30 NL NLAANVRAGE7014405,A patent/NL165789C/en not_active IP Right Cessation
-
1971
- 1971-02-24 SU SU711619478A patent/SU858573A3/en active
Cited By (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3859083A (en) * | 1972-05-17 | 1975-01-07 | Honda R & D Co Ltd | Cast alloy for valve seat-insert |
| US3844774A (en) * | 1973-09-24 | 1974-10-29 | Carondelet Foundry Co | Corrosion-resistant alloys |
| US3947266A (en) * | 1974-05-17 | 1976-03-30 | Carondelet Foundry Company | Corrosion-resistant alloys |
| US4033767A (en) * | 1975-09-19 | 1977-07-05 | Chas. S. Lewis & Co., Inc. | Ductile corrosion resistant alloy |
| US4063934A (en) * | 1975-12-02 | 1977-12-20 | Acieries Du Manoir Pompey | Heat resisting nickel-chromium alloy having high resistance to oxidation, carburization and creep at high temperatures |
| US4026699A (en) * | 1976-02-02 | 1977-05-31 | Huntington Alloys, Inc. | Matrix-stiffened heat and corrosion resistant alloy |
| US4058416A (en) * | 1976-02-02 | 1977-11-15 | Huntington Alloys, Inc. | Matrix-stiffened heat and corrosion resistant wrought products |
| US4119456A (en) * | 1977-01-31 | 1978-10-10 | Steel Founders' Society Of America | High-strength cast heat-resistant alloy |
| US4126447A (en) * | 1977-10-31 | 1978-11-21 | Crucible Inc. | Lanthanum-modified high-temperature alloy |
| US4329173A (en) * | 1980-03-31 | 1982-05-11 | Carondelet Foundry Company | Alloy resistant to corrosion |
| US4410362A (en) * | 1981-01-12 | 1983-10-18 | Kubota Ltd. | Heat resistant cast iron-nickel-chromium alloy |
| US4448749A (en) * | 1981-10-12 | 1984-05-15 | Kubota Ltd. | Heat resistant cast iron-nickel-chromium alloy |
| US4853185A (en) * | 1988-02-10 | 1989-08-01 | Haynes International, Imc. | Nitrogen strengthened Fe-Ni-Cr alloy |
| US5126107A (en) * | 1988-11-18 | 1992-06-30 | Avesta Aktiebolag | Iron-, nickel-, chromium base alloy |
| WO1991016467A1 (en) * | 1990-04-16 | 1991-10-31 | Carondelet Foundry Company | Heat resistant alloys |
| US5077006A (en) * | 1990-07-23 | 1991-12-31 | Carondelet Foundry Company | Heat resistant alloys |
| US5603891A (en) * | 1991-09-11 | 1997-02-18 | Krupp Vdm Gmbh | Heat resistant hot formable austenitic nickel alloy |
| US5194221A (en) * | 1992-01-07 | 1993-03-16 | Carondelet Foundry Company | High-carbon low-nickel heat-resistant alloys |
| US5516485A (en) * | 1994-03-17 | 1996-05-14 | Carondelet Foundry Company | Weldable cast heat resistant alloy |
| US20060157161A1 (en) * | 2005-01-19 | 2006-07-20 | Govindarajan Muralidharan | Cast, heat-resistant austenitic stainless steels having reduced alloying element content |
| US7749432B2 (en) | 2005-01-19 | 2010-07-06 | Ut-Battelle, Llc | Cast, heat-resistant austenitic stainless steels having reduced alloying element content |
| US8003045B2 (en) | 2005-01-19 | 2011-08-23 | Ut-Battelle, Llc | Cast, heat-resistant austenitic stainless steels having reduced alloying element content |
| US11981875B2 (en) | 2018-12-20 | 2024-05-14 | Exxonmobil Chemical Patents Inc. | Erosion resistant alloy for thermal cracking reactors |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2082658A5 (en) | 1971-12-10 |
| NL7014405A (en) | 1971-09-27 |
| NL165789B (en) | 1980-12-15 |
| NL165789C (en) | 1985-07-16 |
| BE790197Q (en) | 1973-02-15 |
| JPS4927725B1 (en) | 1974-07-20 |
| DE2037648C3 (en) | 1978-12-07 |
| DE2037648B2 (en) | 1973-10-18 |
| DE2037648A1 (en) | 1971-10-21 |
| GB1271033A (en) | 1972-04-19 |
| SU858573A3 (en) | 1981-08-23 |
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