US3856514A - Cold workable and age-hardenable steel - Google Patents
Cold workable and age-hardenable steel Download PDFInfo
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- US3856514A US3856514A US00187825A US18782571A US3856514A US 3856514 A US3856514 A US 3856514A US 00187825 A US00187825 A US 00187825A US 18782571 A US18782571 A US 18782571A US 3856514 A US3856514 A US 3856514A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 98
- 239000010959 steel Substances 0.000 title claims abstract description 98
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 54
- 229910052751 metal Inorganic materials 0.000 claims abstract description 42
- 239000002184 metal Substances 0.000 claims abstract description 42
- 238000005275 alloying Methods 0.000 claims abstract description 41
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 40
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 39
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 39
- 150000002739 metals Chemical class 0.000 claims abstract description 39
- 239000010936 titanium Substances 0.000 claims abstract description 38
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 35
- 239000011572 manganese Substances 0.000 claims abstract description 27
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract description 25
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 25
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims abstract description 24
- 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 claims abstract description 14
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 11
- 239000010703 silicon Substances 0.000 claims abstract description 11
- 239000002245 particle Substances 0.000 claims abstract description 9
- 239000010955 niobium Substances 0.000 claims abstract description 7
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910052715 tantalum Inorganic materials 0.000 claims abstract description 6
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910052720 vanadium Inorganic materials 0.000 claims abstract description 6
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910052726 zirconium Inorganic materials 0.000 claims abstract description 6
- 229910052758 niobium Inorganic materials 0.000 claims abstract description 5
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 claims abstract description 5
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 abstract description 91
- 229910052759 nickel Inorganic materials 0.000 abstract description 51
- 239000010949 copper Substances 0.000 abstract description 32
- 229910052802 copper Inorganic materials 0.000 abstract description 29
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract description 20
- 239000011651 chromium Substances 0.000 abstract description 10
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 8
- 239000011133 lead Substances 0.000 abstract description 6
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 abstract description 5
- 229910052790 beryllium Inorganic materials 0.000 abstract description 5
- ATBAMAFKBVZNFJ-UHFFFAOYSA-N beryllium atom Chemical compound [Be] ATBAMAFKBVZNFJ-UHFFFAOYSA-N 0.000 abstract description 5
- 229910052797 bismuth Inorganic materials 0.000 abstract description 5
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 abstract description 5
- 229910017052 cobalt Inorganic materials 0.000 abstract description 5
- 239000010941 cobalt Substances 0.000 abstract description 5
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 abstract description 5
- 229910052750 molybdenum Inorganic materials 0.000 abstract description 5
- 239000011733 molybdenum Substances 0.000 abstract description 5
- 229910052714 tellurium Inorganic materials 0.000 abstract description 5
- PORWMNRCUJJQNO-UHFFFAOYSA-N tellurium atom Chemical compound [Te] PORWMNRCUJJQNO-UHFFFAOYSA-N 0.000 abstract description 5
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 abstract description 5
- 229910052721 tungsten Inorganic materials 0.000 abstract description 5
- 239000010937 tungsten Substances 0.000 abstract description 5
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 abstract description 4
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 abstract description 4
- 239000005864 Sulphur Substances 0.000 abstract description 4
- 239000004411 aluminium Substances 0.000 abstract description 4
- 229910052804 chromium Inorganic materials 0.000 abstract description 4
- 239000012535 impurity Substances 0.000 abstract description 4
- 229910052742 iron Inorganic materials 0.000 abstract description 4
- BUGBHKTXTAQXES-UHFFFAOYSA-N Selenium Chemical compound [Se] BUGBHKTXTAQXES-UHFFFAOYSA-N 0.000 abstract description 3
- 239000011669 selenium Substances 0.000 abstract description 3
- 229910052711 selenium Inorganic materials 0.000 abstract description 3
- 238000005452 bending Methods 0.000 description 19
- 238000011282 treatment Methods 0.000 description 10
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 9
- 238000005520 cutting process Methods 0.000 description 7
- 239000000463 material Substances 0.000 description 7
- 230000002195 synergetic effect Effects 0.000 description 6
- 102100038110 Arylamine N-acetyltransferase 2 Human genes 0.000 description 5
- 101710124361 Arylamine N-acetyltransferase 2 Proteins 0.000 description 5
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 5
- 229910052796 boron Inorganic materials 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 101710124345 Arylamine N-acetyltransferase 1 Proteins 0.000 description 3
- 102100033874 Probable sodium-coupled neutral amino acid transporter 6 Human genes 0.000 description 3
- 101710104546 Probable sodium-coupled neutral amino acid transporter 6 Proteins 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 3
- 229910018182 Al—Cu Inorganic materials 0.000 description 2
- 229910018575 Al—Ti Inorganic materials 0.000 description 2
- 229910017945 Cu—Ti Inorganic materials 0.000 description 2
- 229910003310 Ni-Al Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229910018507 Al—Ni Inorganic materials 0.000 description 1
- 101000884385 Homo sapiens Arylamine N-acetyltransferase 1 Proteins 0.000 description 1
- 101001034811 Homo sapiens Eukaryotic translation initiation factor 4 gamma 2 Proteins 0.000 description 1
- 101000639975 Homo sapiens Sodium-dependent noradrenaline transporter Proteins 0.000 description 1
- 229910000943 NiAl Inorganic materials 0.000 description 1
- NPXOKRUENSOPAO-UHFFFAOYSA-N Raney nickel Chemical compound [Al].[Ni] NPXOKRUENSOPAO-UHFFFAOYSA-N 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 102100033769 Sodium-coupled neutral amino acid transporter 3 Human genes 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- -1 maganese Chemical compound 0.000 description 1
- 150000002736 metal compounds Chemical class 0.000 description 1
- 238000005121 nitriding Methods 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 238000007669 thermal treatment Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
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
- C22C38/08—Ferrous alloys, e.g. steel alloys containing nickel
Definitions
- a cold workable and age-hardenable steel includes weight percentages of carbon and manganese within an area enclosed by a line connecting a point P indicating zero weight of carbon and 1.8 weight of manganese, a point 0 indicating 0.08 weight of carbon and 0.5 weight of manganese, and a point R in- WEIGHT /a OF MANGANESE P16 0%, Mn 1 1 80%) dicating 0.08 weight of carbon and zero of manganese to a point S indicating zero weight of carbon and zero weight of manganese; less than 0.6 weight of silicon; as age-hardenability improving alloying metals more than 2.5 weight of nickel and more than 0.6 weight of aluminium or more than 2.5 weight of nickel, more than 0.6 weight-% of aluminum and more than 0.5 weight of copper or more than 2.5 weight of nickel, more than 0.6 weight of aluminum and more than 0.5 weight of titanium or
- Added as ductility and temperability improving alloying metals may be at least one element selected from the group consisting of less than 2.5 weight of chromium, less than 0.5 weight of molybdenum, less than 0.5 weight of tungsten, less than 0.5 weight of cobalt, less than 0.5 weight of beryllium and less than 0.01 weight of both.
- Business machines such as data-processing machines and complicated articles such as racks, gears, arms, stoppers and carriages used in making a computer are made by using a case hardening steel and then they are heat-treated for hardening the case hardening steel. Also such business machines and such complicated articles are made of a heat-treated band steel. In such a case, the case hardening steel has a defect so that it has strain after it was heat-treated, and also the heat treated band steel has a defect so that it is difficult to work it into such a complicated article.
- an age-hardenable steel which has less strain after it was heat-treated, for making such a business machine and such a complicated article but the prior known age-hardenable steels do not always give the satisfactory results in making the business machines and the complicated articles.
- the inventors have investigated for removing the above mentioned defects form the prior known steels and have discovered cold workable and age-hardenable steels which are improved in their cold-workability by reducing their hardness under the solution treatments and can be hardened by age-treatment and have little strain after they were heat-treated.
- the cold workability which is determined on the basis of the ltight-bending of the steel is varied depending upon not only the solution treated hardness but the contents of carbon and maganese, and therefore it'is preferable to use carbon and manganese in the amounts as defined within the area enclosed by the line connecting the points P, Q and R to the point S as shown in the accompanying FIG. 1 showing carbon versus manganese. This is fully explained as the descrip tion goes on.
- a small amount of silicon is essential for conducting the smelting technique but a larger amount of silicon impairs the ductility and the cold workability of steels and therefore the content of silicon is defined to less than 0.6 weight percentage.
- Nickel is an alloying element for producing a Ni-Al when it is added into steels in an amount of below 2.5
- Aluminum is an alloying element for producing an Al-Ni alloy and an Al-Ti alloy, and also it is an essential alloying element forimproving the age-hardenability of steels by the synergistic actions and effects between Al proving the age-hardenability of the steels and it is used as an essential element for strengthening the steels by the synergistic actions and effects between Cu and depositions resulted by the presence of nickel, aluminum and titanium. It is preferable to use copper in an amount of above 0.5 weight percentage.
- Titanium is an alloying element for producing a metal compound between Ti and Ni or Ti and Al and it is used as an essential element for improving the age-hardenability of steels by the synergistic actions and effects between Ti and Cu. It is preferable to use titanium in an amount of above 0.5 weight percentage.
- the total amount of the age-hardenability improving alloying metals which are added in the cold workable and age-hardenable steel of this invention in combination of Niand Al or Ni, Al and Cu or Ni, Al and Ti or Ni, Al, Cu and Ti is required to limit to the lower content of 4.5 weight percentages for obtaining the intended Vickers age-hardness of above 300.
- the age-hardenability improving alloying metals are used in a larger amount of above 6.5 weight percentages, they become expensive and also in some cases aluminum, copper and titanium impede the output of the steels and therefore the total amount of the age-hardenability improving alloying metals are defined within the range of from 4.5 to 6.5 weight percentages.
- Chromium, molybdenum, tungsten, cobalt, beryllium and boron 7.
- These metals can be used alone or in combination for improving the ductility and the resistance against the softening of the cold workable and age-hardenable steel of this invention when less than 2.5 weight of chromium, less than 0.5 weight of molybdenum, less of cobalt and less than 0.5 weight 7r of beryllium are incorporated with said steel but they impeded the cold workability of the steel and become expensive when they are used in a larger amount.
- the cold workable and age-hardenable steel of this invention is improved markedly in its temperability when a small amount of boron is incorporated with said steel but the ductility and the output of the steel are impeded when boron is incorporated with the steel in an excess amount. Therefore, it is preferable to use boron in an amount of below 0.01 weight percentage.
- niobium and tantalum are defined to less than 0.5 weight percentage and vanadium and zirconium are defined to less than 0.5 weight percentage respectively.
- These metals can be used for improving the machinability and retaining the age-hardenability of the cold workable and age-hardenable steel of this invention but the steel is impeded in its ductility and workability and it tneds to become brittle when such metals are incorporated with the steel in a larger amount. Therefore it is preferable to use sulphur, lead, selenium, tellurium and bismuth in an amount of below 0.3 weight 7r, below 0.4 weight below 0.5 weight 71 below 0.3 weight 7! and below 0.3 weight 7( respectively.
- Table 1 it shows various kinds of steels designated by the signs M(or Nal NA2, D, E, NAK-Z, NAK3, N(or NAT-l NAT-2, A (or NAK- T-l B, C, NAKT-2, N28. NAKT-3, F, G(or than 0.5 weight of tungsten, less than 0.5 weight 4O NAK-l )1 Hi J, K and Table l Compositions of Steels 7r Signs of Stee C Si Mn P S Ni Al Cu Ti Others M or NAI 0.01 0.09 1.20 0.007 0.012 3.65 1.10 0.15
- the steels M, N, NATK-l B, c, NAKT-Z, N28and NAKT-3 are the A and G are the same as the steels NA-1, NAT1, NAKT-1 and NAK-l respectively.
- N(or NAT-l NAT-2, A (or NAKT-l), B, C, NAKT-Z. N28 and NAKT-3 are the cold workable and age-hardenable steels of this invention and the steels F, G. (or NAK-l), H, l, J, K and L are the comparative steels.
- the steels M and NA2 are the cold workable and age-hardenable NiAl type steels; the steels D, E, NAK2 and NAK-3 are the cold workable and agehardenable Ni-Al-Cu type steels; and steels N(or NAT-1) and NAT-2 are the cold workable and age- -hardenable Ni-A1-Ti type steels; and the steels A(or cold workable and age-hardenable Ni'Al-Cu-Ti type steels of this invention.
- Test samples of the steels as shown in Table l were subjected to the solution treatment at 900C for 10 minutes, followed by cooling them in oil and then the treated test samples were tested for ltight-bending and machinability. Further, the treated test samples were age-treated at 525C for 5 hours.
- the cold workability of the steels which were subjected to the solution treatment was determined by observing the presence or the absence of cracks on the bent part of each of the test samples after they were tested for l80tight bending in the direction along the rolling of the steels. The test results are give in Table 2.
- the total sum of the age-hardenability improving alloying metals Ni, Al
- Cu and Ti must be kept at the 4.7 weight percentages or more for securing the age-hardness equivalent to or of above 300 vickers hardness of the cold workable and age-hardenable steel and-therefore the solution treated hardness of sucha cold workable and age-hardenable steel can not unlimitedly be reduced by decreasing the 35.
- the solution treated hardness of the cold workable and age-hardenable steel of this invention is required to be kept at 175 Vickers hardness or more for securing the age'hardness of about 300 Vick- 40 ers hardness. Within the range of such a Vickers hardness, the solution treated hardness is not co-related to the 180 tight-bending as shown in Table 2.
- FIG. 1 it shows the relationshiip between the I80 tight-bending of the test samples and
- the white marked points indicate'that the 180tight-bending of the test samples is good and also the black marked points indicate that the 180tight-bending of the test samples is bad.
- the 180 tight-bending of the cold workable and age-hardenable steels of this inven- 6 tion is strongly co-related to the amounts of carbon and manganese contained in such steels and also that it is possible to secure the l80tight-bending of such steels when they are fallen within the area enclosed by the line connecting the points P, Q and R to the point 5, and they contain less than 0.08 weight 7r of carbon and less than 1.8 weight of manganese.
- machinability improving alloying metals can improve remarkedly the life of the cutting tools without affecting the ltight-bending and the agehardness of the cold workable and age-hardenable steels of this invention. Still further, it was recognized that the use of a suitable amount of the ductility and temperability improving alloying metals and the alloying metals for improving the fineness of the crystalline particles can improve the strength of the cold workable and age-hardenable steels of this invention without affecting the 180tight-bending, the age-hardness and the machinability of such steels.
- test results are shown after the steel A(or NAKT-l) was treated with a liquid nitriding agent, which is sold under the trade name of NH-360 by Nisshin Kagaku Kaisha, at 520C for 2 hours.
- a liquid nitriding agent which is sold under the trade name of NH-360 by Nisshin Kagaku Kaisha, at 520C for 2 hours.
- the-curve 1 shows the test results after the steel A(or NAKT-l) was treated at 570C for minutes by using a tufftriding method.
- the Curves 2 and 3 show the test results after the steel A(or NAK- T-l was treated at 570C for 60 minutes and 30 minutes respectively by using the tufftriding method.
- the curve 4 shows the test results after the steel G(or NAK-l was treated at 570Cfor 180 minutes by using the tufftriding method.
- the critical essential features of the cold workable and gehardenable steel of this invention to contain less than I 0.08 weight of carbon and less than 1.8 weight of maganese and to fall within the area as indicated in the 0 FIG. 1. Also, it is the critical essential features of the cold workable and age-hardenable steel of this invention to contain the age-hardenability improving alloying metals in combination of Ni and Al or Ni, Al and Cu or Ni, Al and Ti or Ni, Al, Cu and Ti in which Ni is more than 2.5 weight Al is more than 0.6 weight Cu is more than 0.5 weight 7: and Ti is more than 0.5 weight and the total amount of the age-hardenability improving alloying metals is in the range of from 4.5 to 6.5 weight percentages.
- Table 3 Temp. used Time(minutes) Solution 180 tightage-hardness for the used for the treated bending after treated solution solution treathardness at 525C for treatments ment. (Vickers) 5 hours Water cooling (Vickers) is used 950 l 184 good 450 5 195 good 460 900 l 180 good 450 5 182 good l 800 1 I77 good 445 5 I80 good 452 700 l 175 good 440 5 180 good 447 650 l 177 good 440 5 180 good 435 Further the steel A (or NAKT-1) was cut into test samples having the size of 1 mm thickness X 30 mm width X 105 mm length and the test samples were bent by the angle of 90 and then the variation of angle was observed after they were age-treated. It was found that the test samples had a little strain resulted by the thermal treatments. The test results are given in Table 4. The test results are compared with much strain of the commercial tempered and annealed steels without showing the data after they were thermally treated.
- the sign l. indicates that the test samples were bent in the direction along the rolling of the steel A.
- the sign T indicates that the test samples were bent in the direction perpendicular to the rolling of the steel A.
- the cold workable and age-hardenble steels of this invention have been developed for obtaining the materials, which are easily workable by pressing, extruding, deep drawing, heading or cutting by applying the cold workability to the steels under the conditions of the solution treatment, having the age-hardness of above 300 Vickers hardness and the improved machinability after the materials were age-treated.
- the specified amount of Ni and Al or Ni, Al and Cu or Ni, Aland Ti or Ni, Al, Cu and Ti is added to the steels as the age-hardenability improving alloying metals and also the contents of carbon and manganese are defined as mentioned above for securing the cold workability of the materials.
- the ductility and temperability of the materials, the fineness of the crystalline particles of the materials and the machinability of the materials are improved by incorporating the specified amount ofchromium, molybdenum, tungsten. cobalt, beryllium and boron as the ductility and temperability improving alloying metals; the specified amount of niobium, tantalum, vanadium and zirconium the fineness improvingv alloying metals; and the specified-amount of sulphur, lead, seleclosed by the line connecting points P, Q and R to the point S as shown in the accompanying FIG.
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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)
- Sealing Battery Cases Or Jackets (AREA)
- Pressure Vessels And Lids Thereof (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US466512A US3926621A (en) | 1970-10-19 | 1974-05-02 | Cold workable and age-hardenable steel |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9115070 | 1970-10-19 | ||
| JP6886871A JPS5146732B2 (enrdf_load_stackoverflow) | 1971-09-08 | 1971-09-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US3856514A true US3856514A (en) | 1974-12-24 |
Family
ID=26410058
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US00187825A Expired - Lifetime US3856514A (en) | 1970-10-19 | 1971-10-08 | Cold workable and age-hardenable steel |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US3856514A (enrdf_load_stackoverflow) |
| DE (1) | DE2152035C3 (enrdf_load_stackoverflow) |
| SE (4) | SE401525B (enrdf_load_stackoverflow) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6033496A (en) * | 1996-07-12 | 2000-03-07 | Honda Giken Kogyo Kabushiki Kaisha | High fatigue strength gear |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2339368A (en) * | 1942-08-05 | 1944-01-18 | Sun Oil Co | Apparatus for cracking hydrocarbon oils |
| US2402135A (en) * | 1944-12-26 | 1946-06-18 | Inland Steel Co | Alloy steel |
| US2770563A (en) * | 1953-03-07 | 1956-11-13 | Acieries De Pompey | Low alloy steel tubing |
| US2797162A (en) * | 1954-07-19 | 1957-06-25 | Union Carbide & Carbon Corp | Low alloy steel for sub-zero temperature application |
| US2900250A (en) * | 1958-06-18 | 1959-08-18 | Universal Cyclops Steel Corp | Free-machining austenitic alloys |
| US3365343A (en) * | 1967-04-04 | 1968-01-23 | Crucible Steel Co America | Low carbon formable and ageable alloy steels |
-
1971
- 1971-10-08 US US00187825A patent/US3856514A/en not_active Expired - Lifetime
- 1971-10-19 SE SE7113223A patent/SE401525B/xx unknown
- 1971-10-19 DE DE2152035A patent/DE2152035C3/de not_active Expired
-
1975
- 1975-05-06 SE SE7505256A patent/SE425006B/xx not_active IP Right Cessation
- 1975-05-06 SE SE7505255A patent/SE425005B/xx not_active IP Right Cessation
- 1975-05-06 SE SE7505254A patent/SE425004B/xx not_active IP Right Cessation
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2339368A (en) * | 1942-08-05 | 1944-01-18 | Sun Oil Co | Apparatus for cracking hydrocarbon oils |
| US2402135A (en) * | 1944-12-26 | 1946-06-18 | Inland Steel Co | Alloy steel |
| US2770563A (en) * | 1953-03-07 | 1956-11-13 | Acieries De Pompey | Low alloy steel tubing |
| US2797162A (en) * | 1954-07-19 | 1957-06-25 | Union Carbide & Carbon Corp | Low alloy steel for sub-zero temperature application |
| US2900250A (en) * | 1958-06-18 | 1959-08-18 | Universal Cyclops Steel Corp | Free-machining austenitic alloys |
| US3365343A (en) * | 1967-04-04 | 1968-01-23 | Crucible Steel Co America | Low carbon formable and ageable alloy steels |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6033496A (en) * | 1996-07-12 | 2000-03-07 | Honda Giken Kogyo Kabushiki Kaisha | High fatigue strength gear |
| CN1073217C (zh) * | 1996-07-12 | 2001-10-17 | 本田技研工业株式会社 | 高疲劳强度齿轮 |
Also Published As
| Publication number | Publication date |
|---|---|
| SE425004B (sv) | 1982-08-23 |
| DE2152035B2 (de) | 1974-11-21 |
| DE2152035A1 (de) | 1972-05-31 |
| SE425005B (sv) | 1982-08-23 |
| SE7505256L (enrdf_load_stackoverflow) | 1975-05-06 |
| SE7505255L (enrdf_load_stackoverflow) | 1975-05-06 |
| SE401525B (sv) | 1978-05-16 |
| DE2152035C3 (de) | 1975-07-03 |
| SE425006B (sv) | 1982-08-23 |
| SE7505254L (enrdf_load_stackoverflow) | 1975-05-06 |
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