US2378993A - Cold rolled manganese steels - Google Patents
Cold rolled manganese steels Download PDFInfo
- Publication number
- US2378993A US2378993A US533247A US53324744A US2378993A US 2378993 A US2378993 A US 2378993A US 533247 A US533247 A US 533247A US 53324744 A US53324744 A US 53324744A US 2378993 A US2378993 A US 2378993A
- Authority
- US
- United States
- Prior art keywords
- cold
- steels
- manganese
- cold rolled
- 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
- 229910000831 Steel Inorganic materials 0.000 title description 21
- 239000010959 steel Substances 0.000 title description 21
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 title description 12
- 229910052748 manganese Inorganic materials 0.000 title description 12
- 239000011572 manganese Substances 0.000 title description 12
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 16
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 12
- 229910052742 iron Inorganic materials 0.000 description 8
- 229910052759 nickel Inorganic materials 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 230000000750 progressive effect Effects 0.000 description 5
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 4
- 229910052804 chromium Inorganic materials 0.000 description 4
- 239000011651 chromium Substances 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 238000003466 welding Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 238000005097 cold rolling Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 229910000617 Mangalloy Inorganic materials 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- VNNRSPGTAMTISX-UHFFFAOYSA-N chromium nickel Chemical compound [Cr].[Ni] VNNRSPGTAMTISX-UHFFFAOYSA-N 0.000 description 1
- 238000010622 cold drawing Methods 0.000 description 1
- 239000010960 cold rolled steel Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- QFXZANXYUCUTQH-UHFFFAOYSA-N ethynol Chemical group OC#C QFXZANXYUCUTQH-UHFFFAOYSA-N 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- SNICXCGAKADSCV-UHFFFAOYSA-N nicotine Chemical compound CN1CCCC1C1=CC=CN=C1 SNICXCGAKADSCV-UHFFFAOYSA-N 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 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
- C22C38/16—Ferrous alloys, e.g. steel alloys containing copper
-
- 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
- C22C38/58—Ferrous alloys, e.g. steel alloys containing chromium with nickel with more than 1.5% by weight of manganese
Definitions
- Austenitic-type chromium-nickel stainless steels cold-rolled to a high tensile strength, have also gained considerable favor for the manufacture of airplanes, railway cars, and other structures. These steels are very tough and ductile, and offer the advantage not only of a high ratio of strength to weight but also of a high ratio of strength to volume. They are, moreover, very resistant to corrosion and ordinarily do not require surface-protection against the weather.
- An object of this invention is to provide a new material having a very high strength per unit of weight and per unit 01' volume, and great toughness and ductility.
- Another object is to provide a new steel for" use in cold drawing, cold rolling, and other cold forming operations.
- Another object is to provide novel cold drawn, cold rolled, and otherwise cold formed steel articles; and a further object is to provide such steels and articles which are also resistant to progressive rusting.
- the invention comprises steels for '7 I ing, cold rolling, and other cold forming opera tions, and articles composed of such steels, containing manganese between-15.5% and 20%, Preferably between 16% and 18%, and nickel and chromium, remainder substantially iron.
- the steel contains in, addition to manganese, nickel between 0.25% and 4.5%,.preferably 1% to 2.5%. 0.25% and 7%, preferably 1% to 5%.
- residual iron and “remainder substantially iron as used herein and in the appended claims mean to include not only chemically pure iron but also iron ordinary steels.
- carbon may be present in a proportion from'0.01% to 1% or somewhat higher without greatly altering the characteristics of the steel, although it is preferred that the carbon content be less than 0.35%.
- Nitrogen in a proportion up to about 0.15%.
- phosphorus-up to about 0.2%, sulfur up to about 0.05%, silicon up to about 1%, and residual deoxidizers, scavengers, and grain refiners, such as calcium, may also be present.
- the steels of the invention described above, rolled readily, with-1; out checking, cracking, or tearing, and can vbecold worked, withoutintermediate-or subsequent. to obtain a very can be hot forged and hot annealing at high, temperatur great toughness and high ductility.
- the steels of the present invention are suitable for lightweight high strength membersinthecoldrolledccnditimatlll'mrther physical Pr perties may and chromium in a proportion between containing the common' lngredientsi'ound in be eil'ected by subjecting the cold rolled steel articles, resistant to progressive rusting, comto a low temperature heat treatment between posed substantially of manganese between 15.5% 100 C. and 250' C.
- a suitable treatment is at 200 n 20%, i k l bet een 0,25% and 45%, C. for 24 hours. At the lower end of the'temmium between 0.25% and 7%, remainderiron.
- Cold drawn or otherwise cold worked steel other instances particularly at the lower ttemarticles, resistant to progressive rusting having pcratures of the range, it may be desirable ,to approximately the composition: 16% manganese. heat for as long as 100 hours. 2% nickel, 3% chromium, remainder iron.
- the materials oi this invention may be welded 4.
- a cold formed, high strength article comy e common we ns m t including the It posed of a steel containing manganese between various "spot" electrical resistance welding 15.5% and 20%, nickel between 0.25% and 4.5%, methods, electric arc welding, and oxyacetylene chromiunri'between 0.25% and 7%, remainder torch welding.
- This characteristic is of ;parttcsirbstan'tidlly iron, said article being in the com ular value, because weldingis'nsuallyfasterand resulting from heating within the range cheaper than riveting.
- the material need not 90 (it-100' 6. to 250 C. for a time between 30 minbe annealed .after welding. utes and 100 hours.
Landscapes
- 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 June 26, 1945 UNITED STATES PATENT orrlce COLD ROLLED MANGANESE STEELE Russell Franks, Niagara Falls, N. Y., assign to Electro Metallurgical Company, a corporation of West Virginia No Drawing. Original application July 22, 1942, Serial No. 451,893. Divided and this application April 28, 1944. Serial No. 533,241
4 Claims. (Cl. 148-31) advantage gained by a high ratio of strength to weight.
Austenitic-type chromium-nickel stainless steels, cold-rolled to a high tensile strength, have also gained considerable favor for the manufacture of airplanes, railway cars, and other structures. These steels are very tough and ductile, and offer the advantage not only of a high ratio of strength to weight but also of a high ratio of strength to volume. They are, moreover, very resistant to corrosion and ordinarily do not require surface-protection against the weather.
Several special alloy steels, containing but a few per cent of alloying ingredients, and submitted to strengthening heat treatments, have been used for a limited number of wrposes, for instance, airplane tubing and railway trucks, wherein a high ratio of strength to weight. is important; but such steels when welded and not specially annealed have not had enough toughness and ductility at very high strength levels to adapt them to all uses in the field of highstrength, light-weight structures.
An object of this invention is to provide a new material havinga very high strength per unit of weight and per unit 01' volume, and great toughness and ductility. This application is a division of my application Ser. No. 451,893, flied July 22, 1942.
Another object is to provide a new steel for" use in cold drawing, cold rolling, and other cold forming operations.
Another object is to provide novel cold drawn, cold rolled, and otherwise cold formed steel articles; and a further object is to provide such steels and articles which are also resistant to progressive rusting.
In a search for steels which would achieve the objects of the invention, the so-called Hadfleld manganese steels containin 10% to 14% manganese were investigated. The results were dia- 50 highstrength while retaining improvement in certain appointing throughout the composition range, because the material cracked alter relatively light cold rolling. Raising the manganese content to 16%, 17.5%. and 18% did not obviate this difnculty. when the manganese content rose to 20% or 30%, the material'was ("limit to hot roll.
I have discovered, however, that a manganese steel which is readily hot rolled, and is readily cold rolled or otherwise cold worked, and which has when sufllciently cold worked a very high strength and excellent ductility and toughness.
can be obtained it the manganese content is maintained within certain narrow, critical limits. and if nickel and chromium are added in certain 1 small, critical proportions. I have also diseov-q ered that these steels have a substantial-moist n ance to progressive rusting.
The invention comprises steels for '7 I ing, cold rolling, and other cold forming opera tions, and articles composed of such steels, containing manganese between-15.5% and 20%, Preferably between 16% and 18%, and nickel and chromium, remainder substantially iron.
In a preferred embodiment of the invention, the steel contains in, addition to manganese, nickel between 0.25% and 4.5%,.preferably 1% to 2.5%. 0.25% and 7%, preferably 1% to 5%.
By "remainder iron and "remainder substantially iron as used herein and in the appended claims, I mean to include not only chemically pure iron but also iron ordinary steels. For instance, carbon may be present in a proportion from'0.01% to 1% or somewhat higher without greatly altering the characteristics of the steel, although it is preferred that the carbon content be less than 0.35%. Nitrogen in a proportion up to about 0.15%. phosphorus-up to about 0.2%, sulfur up to about 0.05%, silicon up to about 1%, and residual deoxidizers, scavengers, and grain refiners, such as calcium, may also be present.
The steels of the invention, described above, rolled readily, with-1; out checking, cracking, or tearing, and can vbecold worked, withoutintermediate-or subsequent. to obtain a very can be hot forged and hot annealing at high, temperatur great toughness and high ductility.
Although the steels of the present invention are suitable for lightweight high strength membersinthecoldrolledccnditimatlll'mrther physical Pr perties may and chromium in a proportion between containing the common' lngredientsi'ound in be eil'ected by subjecting the cold rolled steel articles, resistant to progressive rusting, comto a low temperature heat treatment between posed substantially of manganese between 15.5% 100 C. and 250' C. A suitable treatment is at 200 n 20%, i k l bet een 0,25% and 45%, C. for 24 hours. At the lower end of the'temmium between 0.25% and 7%, remainderiron. perature range a Som wh t longer time is re- 2.-Colddrawn or otherwise cold worked steel w r to effect deliled e as th articles, resistant "to progressive rusting, comtime may e l fl e a the 11 temperature! posed substantially of manganese between 16% of the range. At the higher temperaturesoi. 18%, nickel between 0.5% and 2%, chrothe range, some benefit may be derived from mium between 1% and 5%,remainder iron. heating for as short a period as 30 minutes. In '3. Cold drawn or otherwise cold worked steel other instances, particularly at the lower ttemarticles, resistant to progressive rusting having pcratures of the range, it may be desirable ,to approximately the composition: 16% manganese. heat for as long as 100 hours. 2% nickel, 3% chromium, remainder iron.
The materials oi this invention may be welded 4. A cold formed, high strength article comy e common we ns m t including the It posed of a steel containing manganese between various "spot" electrical resistance welding 15.5% and 20%, nickel between 0.25% and 4.5%, methods, electric arc welding, and oxyacetylene chromiunri'between 0.25% and 7%, remainder torch welding. This characteristic is of ;parttcsirbstan'tidlly iron, said article being in the com ular value, because weldingis'nsuallyfasterand resulting from heating within the range cheaper than riveting. The material need not 90 (it-100' 6. to 250 C. for a time between 30 minbe annealed .after welding. utes and 100 hours.
I 0mm: 7 RUSSELL THANKS.
1. Cold drawn or Otherwise cold worked steel
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US533247A US2378993A (en) | 1942-07-22 | 1944-04-28 | Cold rolled manganese steels |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US451893A US2378991A (en) | 1942-07-22 | 1942-07-22 | Cold rolled manganese steels |
US533247A US2378993A (en) | 1942-07-22 | 1944-04-28 | Cold rolled manganese steels |
Publications (1)
Publication Number | Publication Date |
---|---|
US2378993A true US2378993A (en) | 1945-06-26 |
Family
ID=27036559
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US533247A Expired - Lifetime US2378993A (en) | 1942-07-22 | 1944-04-28 | Cold rolled manganese steels |
Country Status (1)
Country | Link |
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US (1) | US2378993A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2449075A (en) * | 1945-01-23 | 1948-09-14 | Irvin R Kramer | Nonmagnetic armor |
US3081164A (en) * | 1959-11-04 | 1963-03-12 | Westinghouse Electric Corp | Nonmagnetic iron-base alloys |
FR2473067A1 (en) * | 1980-01-08 | 1981-07-10 | Nippon Kokan Kk | NON-MAGNETIC STEEL HAVING HIGH MANGANESE CONTENT AND EXCELLENT MACHINING PERFORMANCE |
US4302248A (en) * | 1978-07-04 | 1981-11-24 | Kobe Steel, Limited | High manganese non-magnetic steel with excellent weldability and machinability |
-
1944
- 1944-04-28 US US533247A patent/US2378993A/en not_active Expired - Lifetime
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2449075A (en) * | 1945-01-23 | 1948-09-14 | Irvin R Kramer | Nonmagnetic armor |
US3081164A (en) * | 1959-11-04 | 1963-03-12 | Westinghouse Electric Corp | Nonmagnetic iron-base alloys |
US4302248A (en) * | 1978-07-04 | 1981-11-24 | Kobe Steel, Limited | High manganese non-magnetic steel with excellent weldability and machinability |
FR2473067A1 (en) * | 1980-01-08 | 1981-07-10 | Nippon Kokan Kk | NON-MAGNETIC STEEL HAVING HIGH MANGANESE CONTENT AND EXCELLENT MACHINING PERFORMANCE |
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