US3582320A - Cobalt base alloy - Google Patents
Cobalt base alloy Download PDFInfo
- Publication number
- US3582320A US3582320A US887376A US3582320DA US3582320A US 3582320 A US3582320 A US 3582320A US 887376 A US887376 A US 887376A US 3582320D A US3582320D A US 3582320DA US 3582320 A US3582320 A US 3582320A
- Authority
- US
- United States
- Prior art keywords
- alloy
- lanthanum
- cobalt base
- base alloy
- alloys
- 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
- 229910045601 alloy Inorganic materials 0.000 title abstract description 37
- 239000000956 alloy Substances 0.000 title abstract description 37
- 239000010941 cobalt Substances 0.000 title abstract description 13
- 229910017052 cobalt Inorganic materials 0.000 title abstract description 13
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 title abstract description 13
- 229910052746 lanthanum Inorganic materials 0.000 abstract description 16
- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical compound [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 abstract description 16
- 230000003647 oxidation Effects 0.000 abstract description 14
- 238000007254 oxidation reaction Methods 0.000 abstract description 14
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 9
- 229910052799 carbon Inorganic materials 0.000 abstract description 9
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 10
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- 239000000203 mixture Substances 0.000 description 5
- 229910052759 nickel Inorganic materials 0.000 description 5
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 4
- 238000007792 addition Methods 0.000 description 4
- 229910052804 chromium Inorganic materials 0.000 description 4
- 239000011651 chromium Substances 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 4
- 229910052710 silicon Inorganic materials 0.000 description 4
- 239000010703 silicon Substances 0.000 description 4
- 229910052715 tantalum Inorganic materials 0.000 description 4
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 4
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 4
- 229910052721 tungsten Inorganic materials 0.000 description 4
- 239000010937 tungsten Substances 0.000 description 4
- 229910052761 rare earth metal Inorganic materials 0.000 description 3
- 150000002910 rare earth metals Chemical class 0.000 description 3
- 229910001122 Mischmetal Inorganic materials 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- 208000035155 Mitochondrial DNA-associated Leigh syndrome Diseases 0.000 description 1
- 229910000990 Ni alloy Inorganic materials 0.000 description 1
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 1
- CODVACFVSVNQPY-UHFFFAOYSA-N [Co].[C] Chemical compound [Co].[C] CODVACFVSVNQPY-UHFFFAOYSA-N 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- NRUQNUIWEUZVLI-UHFFFAOYSA-O diethanolammonium nitrate Chemical compound [O-][N+]([O-])=O.OCC[NH2+]CCO NRUQNUIWEUZVLI-UHFFFAOYSA-O 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 239000011572 manganese Substances 0.000 description 1
- 208000003531 maternally-inherited Leigh syndrome Diseases 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 description 1
- 230000004580 weight loss Effects 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C19/00—Alloys based on nickel or cobalt
- C22C19/07—Alloys based on nickel or cobalt based on cobalt
Definitions
- This invention relates to cobalt base alloys. More particularly, this invention relates to cabolt-chromiumtungsten-nickel alloys containing relatively small amounts of lanthanum and relatively large amounts of carbon which are characterized by improved wear resistance and oxidation resistance at high temperatures in addition to having excellent high temperature mechanical properties.
- cobalt base alloys have been used extensively in the past for high temperature applications and have been found to be generally satisfactory except that in some instances they have been lacking in oxidation resistance, when compared to nickel base alloys.
- Other loW carbon cobalt base alloys containing minor amounts of lanthanum as disclosed in US. Pat. 3,418,111 have been found to have highly improved oxidation resistance. It would represent an advance in the art if cobalt base alloys could be provided with superior wear resistance and oxidation resistance at high temperatures.
- a cobalt base alloy in accordance with the present invention is an alloy consisting essentially of about Percent Chromium 18-35 Tungsten 3-18 Iron Up to 10 Carbon 0.41.3 Nickel 1-30 Silicon 0.2-1.2 Lanthanum 0.02-.l2 Tantalum Up to 10 Cobalt Balance
- a preferred range of the alloy of the present invention A preferred range of the alloy of the present invention providing optimum stress rupture and tensile properties 111 addition to excellent wear resistance is as follows:
- other metals can be adventitiously present in the alloy of this invention in minor amounts.
- zirconium may be present in amounts up to about 2%; vanadium up to about 2%; boron up to about 0.02%; manganese up to about 2%; Ti+Al up to about 4%; Cb up to about 2%.
- the lanthanum is preferably added in essentially elemental form, and should, in any event, exceed the aggregate amount of other rare earth metals in the final alloy.
- the lanthanum addition can be made using any convenient technique such as mischmetal, elemental lanthanum or lanthanum containing alloys.
- Table I shows alloy compositions which have been prepared by being melted, cast into ingots of about 20-25 lbs., hot worked to sheet and annealed at 2100-2250 F. for 10-15 minutes and quenchedQLanthanum additions were made to portions of base melts as indicated.
- the wear on the'rotated sample was 17.3X10- inch We1ght loss 1 hours/year per 1000 feet of travel.
- the wear for alloy D under the Density area of sample 100 hours 5 same conditions was 28 X inch per 1000 feet of travel.
- alloys A and C which Cobalt Balance contain lathanum and have relatively high carbon contents and are within the scope of the present invention and have superior oxidation properties as compared to alloys B and D which do not contain lathanum.
- the alloy of this invention in addition to having improved oxidation resistance, are also characterized by excellent mechanical properties at high temperatures.
- the alloy corresponding to the composition of alloy A, in cast form, was found to have a stress rupture life at a stress of 13,000 p.s.i. at a temperature of 1800" F. of 202 hours and an elongation of about 14%.
- a cylindrical cast sample of alloy having a composition of alloy C was rotated against a flat stationary sample of the same composition at a bearing pressure of 100 psi. The samples were at a temperature of 1400 F. during the test. The rotation was continued for 8 hours to pro- 2.
- An alloy in accordance with claim 1 consisting essentially of about 3.
- An alloy in accordance with claim 1 consisting essentially of about Percent Chromium 18-24 Tungsten 6-8 Iron Up to 10 Carbon 0.4-0.7 Nickel 10-30 Silicon 0.2-l.2 Lanthanum 0.02-0.12 Tantalum Up to 10 Cobalt Balance References Cited UNITED STATES PATENTS 3,418,111 12/1968 Herchenroeder 171 RICHARD O. DEAN, Primary Examiner
Abstract
A COBALT BASE ALLOY HAVING SUPERIOR OXIDATION AND WEAR RESISTANCE WHICH HAS A RELATIVELY HIGH CARBON CONTENT AND CONTAINS A MINOR PROPORTION OF LANTHANUM.
Description
3,582,320 COBALT BASE ALLOY Robert B. Herchenroeder, 609 N. Korby, Kokomo, Ind. 46901 No Drawing. Filed Dec. 22, 1969, Ser. No. 887,376
Int. Cl. C22c 19/00 US. Cl. 75-171 3 Claims ABSTRACT OF THE DISCLOSURE A cobalt base alloy having superior oxidation and wear resistance which has a relatively high carbon content and contains a minor proportion of lanthanum.
This invention relates to cobalt base alloys. More particularly, this invention relates to cabolt-chromiumtungsten-nickel alloys containing relatively small amounts of lanthanum and relatively large amounts of carbon which are characterized by improved wear resistance and oxidation resistance at high temperatures in addition to having excellent high temperature mechanical properties.
Certain cobalt base alloys have been used extensively in the past for high temperature applications and have been found to be generally satisfactory except that in some instances they have been lacking in oxidation resistance, when compared to nickel base alloys. Other loW carbon cobalt base alloys containing minor amounts of lanthanum as disclosed in US. Pat. 3,418,111 have been found to have highly improved oxidation resistance. It would represent an advance in the art if cobalt base alloys could be provided with superior wear resistance and oxidation resistance at high temperatures.
It is therefore an object of the present invention to provide a cobalt base alloy having improved oxidation resistance and wear resistance at elevated temperatures.
Other objects will be apparent from the following description and claims.
A cobalt base alloy in accordance with the present invention is an alloy consisting essentially of about Percent Chromium 18-35 Tungsten 3-18 Iron Up to 10 Carbon 0.41.3 Nickel 1-30 Silicon 0.2-1.2 Lanthanum 0.02-.l2 Tantalum Up to 10 Cobalt Balance A preferred range of the alloy of the present invention A preferred range of the alloy of the present invention providing optimum stress rupture and tensile properties 111 addition to excellent wear resistance is as follows:
Percent Chromium 18-24 Tungsten 6-18 Iron Up to 10 Carbon 0.4-0.7 Nickel 10-30 Silicon 0.2-1.2 Lanthanum 0.02-.l2 Tantalum Up to 10 Cobalt Balance In addition to the specifically mentioned alloy constituents, other metals can be adventitiously present in the alloy of this invention in minor amounts. For example, zirconium may be present in amounts up to about 2%; vanadium up to about 2%; boron up to about 0.02%; manganese up to about 2%; Ti+Al up to about 4%; Cb up to about 2%.
It has been discovered, as part of the present invention that with alloy compositions as described above, a relatively small lanthanum addition and a relatively large carbon content provides remarkable oxidation resistance and wear resistant properties at high temperatures.
It has also been discovered that other rare earth metals can be present with the lanthanum, such as occurs when mischmetal is used to introduce lanthanum, without detrimentally affecting the improved oxidation resistance. However, the presence of other rare earth metals, in an aggregate amount exceeding the lanthanum content, results in the formation of stringers and non-metallic inclusions in the alloy which adversely affect its weld-ability and result in low strength welds. Consequently, for alloys intended for welding applications, the lanthanum is preferably added in essentially elemental form, and should, in any event, exceed the aggregate amount of other rare earth metals in the final alloy. For alloys which are not intended for welding, however, the lanthanum addition can be made using any convenient technique such as mischmetal, elemental lanthanum or lanthanum containing alloys.
Table I shows alloy compositions which have been prepared by being melted, cast into ingots of about 20-25 lbs., hot worked to sheet and annealed at 2100-2250 F. for 10-15 minutes and quenchedQLanthanum additions were made to portions of base melts as indicated.
Specimens of the alloys of Table I, in sheet form inch X inch x 0.06-0.125 inch thick, were tested for oxidation resistance and the results 'are shown in Table II.
The procedure for the oxidation tests to which the alloy specimens were subjected was as follows:
(1) Prepare specimen by grinding all surfaces to a grit finish.
(2) Measure the surface area of specimen and weight.
(3) Expose the specimen at 2000 F. and 2100 F. in dry flowing air (greater than 1 cubic foot per hour per square inch of furnace cross section) for (4) twenty-five hour periods, permitting the sample to cool to room temperature between such period.
(4) Air cool the sample.
(5 Descale the sample in a salt bath.
(6) Carefully weigh the descaled sample and calculate the weight loss.
Patented June 1, 1971 V (7) Calculating the depth of penetration per year of exposure follows:
vide a constant rate of 5.2 feet per minute measured at the circumference of the cylindrical sample.
The wear on the'rotated sample was 17.3X10- inch We1ght loss 1 hours/year per 1000 feet of travel. The wear for alloy D under the Density area of sample 100 hours 5 same conditions was 28 X inch per 1000 feet of travel.
TABLE I 0 N1 Mn B s1 La Zr Ti 00 0. 49 13.59 0.13 0.005 0. 30 0.05 0.21 0.25 Bal. 0.49 13.59 0.13 0.005 0.35 o 21 0.25 Bal. 1.11 2. 94 1.0 0. 007 0.90 0.06 Bal. 1.11 2.94 1.0 0. 007 0.90 Bal.
What is claimed is: TABLE ATION RATE IN MILS PER YEAR 1. An alloy characterized by improved resistance to m oxidation at elevated temperatures consisting essentially in weight percent of about:
2,000 F. 2,100 F. Percent Chromium 18-35 Tungsten 3-18 20 Iron Up to 10 Carbon 0.4-1.3 Nickel 1-30 Silicon 0.2l.2 Lanthanum 0.02-0.12 Tantalum Up to 10 As can be seen from Table II, alloys A and C which Cobalt Balance contain lathanum and have relatively high carbon contents and are within the scope of the present invention and have superior oxidation properties as compared to alloys B and D which do not contain lathanum.
As shown by the test data of Table III, the alloy of this invention, in addition to having improved oxidation resistance, are also characterized by excellent mechanical properties at high temperatures.
TABLE III Alloy A at 2000 F.
0.2% yield strength (k.p.s.i.) 6.9 Ultimate tensile strength (k.p.s.i.) 15.7 Elongation (percent) 78.3
The alloy corresponding to the composition of alloy A, in cast form, was found to have a stress rupture life at a stress of 13,000 p.s.i. at a temperature of 1800" F. of 202 hours and an elongation of about 14%.
Further tests were performed to demonstrate the superior wear resistance of the alloy of the present invention.
A cylindrical cast sample of alloy having a composition of alloy C was rotated against a flat stationary sample of the same composition at a bearing pressure of 100 psi. The samples were at a temperature of 1400 F. during the test. The rotation was continued for 8 hours to pro- 2. An alloy in accordance with claim 1 consisting essentially of about 3. An alloy in accordance with claim 1 consisting essentially of about Percent Chromium 18-24 Tungsten 6-8 Iron Up to 10 Carbon 0.4-0.7 Nickel 10-30 Silicon 0.2-l.2 Lanthanum 0.02-0.12 Tantalum Up to 10 Cobalt Balance References Cited UNITED STATES PATENTS 3,418,111 12/1968 Herchenroeder 171 RICHARD O. DEAN, Primary Examiner
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US88737669A | 1969-12-22 | 1969-12-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US3582320A true US3582320A (en) | 1971-06-01 |
Family
ID=25391015
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US887376A Expired - Lifetime US3582320A (en) | 1969-12-22 | 1969-12-22 | Cobalt base alloy |
Country Status (12)
| Country | Link |
|---|---|
| US (1) | US3582320A (en) |
| JP (1) | JPS5416924B1 (en) |
| AT (1) | AT306390B (en) |
| BE (1) | BE760495A (en) |
| BR (1) | BR7024759D0 (en) |
| CA (1) | CA928533A (en) |
| DE (1) | DE2062776C3 (en) |
| FR (1) | FR2074104A5 (en) |
| GB (1) | GB1340058A (en) |
| LU (1) | LU62284A1 (en) |
| NL (1) | NL7018666A (en) |
| SE (1) | SE353351B (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4080202A (en) * | 1975-03-12 | 1978-03-21 | Hitachi, Ltd. | Cobalt base alloy |
| US4169726A (en) * | 1977-12-21 | 1979-10-02 | General Electric Company | Casting alloy and directionally solidified article |
| US4353742A (en) * | 1978-10-03 | 1982-10-12 | Cabot Stellite Europe Limited | Cobalt-containing alloys |
| US4437913A (en) | 1978-12-04 | 1984-03-20 | Hitachi, Ltd. | Cobalt base alloy |
| US4768289A (en) * | 1986-01-17 | 1988-09-06 | Andreas Stihl | Cobalt base alloy coating for a guide bar of a chain saw |
| US4938805A (en) * | 1984-12-04 | 1990-07-03 | General Electric Company | Novel cobalt-base superalloy and cast and welded industrial gas turbine components thereof and method |
| US20090165595A1 (en) * | 2007-12-26 | 2009-07-02 | Daido Tokushuko Kabushiki Kaisha | Hard-particle powder for sintered body and sintered body |
| US20100048322A1 (en) * | 2008-08-21 | 2010-02-25 | Ryo Sugawara | Golf club head, face of the golf club head, and method of manufacturing the golf club head |
| CN106180738A (en) * | 2016-08-16 | 2016-12-07 | 兰州工业学院 | A kind of valve high temperature resistant nickel cobalt tungsten rare earth alloy powder material and preparation method thereof |
| CN110109337A (en) * | 2019-05-08 | 2019-08-09 | 东莞得利钟表有限公司 | A kind of novel cobalt alloy wrist-watch and its cobalt-alloy material |
| CN115233042A (en) * | 2022-06-15 | 2022-10-25 | 广东工业大学 | Co-based Co-Fe-Ni-Al eutectic entropy alloy resistant to high-temperature oxidation and preparation method and application thereof |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1011984B (en) * | 1984-12-04 | 1991-03-13 | 通用电气公司 | Cobalt-base superalloy and cast and welded industrial gas turbine component thereof |
| JP7156193B2 (en) * | 2019-07-12 | 2022-10-19 | トヨタ自動車株式会社 | Hard particles and sintered sliding member using the same |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3432294A (en) * | 1965-04-21 | 1969-03-11 | Martin Marietta Corp | Cobalt-base alloy |
| US3418111A (en) * | 1966-10-27 | 1968-12-24 | Union Carbide Corp | Cobalt base alloy |
-
1969
- 1969-12-22 US US887376A patent/US3582320A/en not_active Expired - Lifetime
-
1970
- 1970-12-14 CA CA100581A patent/CA928533A/en not_active Expired
- 1970-12-17 BE BE760495A patent/BE760495A/en unknown
- 1970-12-18 GB GB6027470A patent/GB1340058A/en not_active Expired
- 1970-12-18 LU LU62284D patent/LU62284A1/xx unknown
- 1970-12-18 BR BR224759/70A patent/BR7024759D0/en unknown
- 1970-12-19 DE DE2062776A patent/DE2062776C3/en not_active Expired
- 1970-12-21 FR FR7046055A patent/FR2074104A5/fr not_active Expired
- 1970-12-21 AT AT1148070A patent/AT306390B/en not_active IP Right Cessation
- 1970-12-22 NL NL7018666A patent/NL7018666A/xx unknown
- 1970-12-22 SE SE17423/70A patent/SE353351B/xx unknown
- 1970-12-22 JP JP11657170A patent/JPS5416924B1/ja active Pending
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4080202A (en) * | 1975-03-12 | 1978-03-21 | Hitachi, Ltd. | Cobalt base alloy |
| US4169726A (en) * | 1977-12-21 | 1979-10-02 | General Electric Company | Casting alloy and directionally solidified article |
| US4353742A (en) * | 1978-10-03 | 1982-10-12 | Cabot Stellite Europe Limited | Cobalt-containing alloys |
| US4437913A (en) | 1978-12-04 | 1984-03-20 | Hitachi, Ltd. | Cobalt base alloy |
| US4938805A (en) * | 1984-12-04 | 1990-07-03 | General Electric Company | Novel cobalt-base superalloy and cast and welded industrial gas turbine components thereof and method |
| US4768289A (en) * | 1986-01-17 | 1988-09-06 | Andreas Stihl | Cobalt base alloy coating for a guide bar of a chain saw |
| US20090165595A1 (en) * | 2007-12-26 | 2009-07-02 | Daido Tokushuko Kabushiki Kaisha | Hard-particle powder for sintered body and sintered body |
| US7867315B2 (en) * | 2007-12-26 | 2011-01-11 | Daido Tokushuko Kabushiki Kaisha | Hard-particle powder for sintered body and sintered body |
| US20100048322A1 (en) * | 2008-08-21 | 2010-02-25 | Ryo Sugawara | Golf club head, face of the golf club head, and method of manufacturing the golf club head |
| US8475294B2 (en) * | 2008-08-21 | 2013-07-02 | Seiko Instruments Inc. | Golf club head, face of the golf club head, and method of manufacturing the golf club head |
| CN106180738A (en) * | 2016-08-16 | 2016-12-07 | 兰州工业学院 | A kind of valve high temperature resistant nickel cobalt tungsten rare earth alloy powder material and preparation method thereof |
| CN110109337A (en) * | 2019-05-08 | 2019-08-09 | 东莞得利钟表有限公司 | A kind of novel cobalt alloy wrist-watch and its cobalt-alloy material |
| CN115233042A (en) * | 2022-06-15 | 2022-10-25 | 广东工业大学 | Co-based Co-Fe-Ni-Al eutectic entropy alloy resistant to high-temperature oxidation and preparation method and application thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| DE2062776A1 (en) | 1971-06-24 |
| BE760495A (en) | 1971-05-27 |
| JPS5416924B1 (en) | 1979-06-26 |
| AT306390B (en) | 1973-04-10 |
| NL7018666A (en) | 1971-06-24 |
| DE2062776B2 (en) | 1981-10-15 |
| CA928533A (en) | 1973-06-19 |
| FR2074104A5 (en) | 1971-10-01 |
| SE353351B (en) | 1973-01-29 |
| DE2062776C3 (en) | 1982-05-13 |
| BR7024759D0 (en) | 1973-01-02 |
| GB1340058A (en) | 1973-12-05 |
| LU62284A1 (en) | 1971-05-14 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| AS | Assignment |
Owner name: HAYNES INTERNATINAL, INC.,INDIANA Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:CABOT CORPORATION;REEL/FRAME:004770/0271 Effective date: 19870731 Owner name: HAYNES INTERNATINAL, INC., 1020 WEST PARK AVENUE, Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:CABOT CORPORATION;REEL/FRAME:004770/0271 Effective date: 19870731 |