US1007055A - Steel alloy. - Google Patents
Steel alloy. Download PDFInfo
- Publication number
- US1007055A US1007055A US59572110A US1910595721A US1007055A US 1007055 A US1007055 A US 1007055A US 59572110 A US59572110 A US 59572110A US 1910595721 A US1910595721 A US 1910595721A US 1007055 A US1007055 A US 1007055A
- Authority
- US
- United States
- Prior art keywords
- steel
- per cent
- carbon
- steel alloy
- plates
- 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
- 229910000851 Alloy steel Inorganic materials 0.000 title description 2
- 229910000831 Steel Inorganic materials 0.000 description 19
- 239000010959 steel Substances 0.000 description 19
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 11
- 229910052799 carbon Inorganic materials 0.000 description 11
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 10
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 5
- 229910052750 molybdenum Inorganic materials 0.000 description 5
- 239000011733 molybdenum Substances 0.000 description 5
- 229910052759 nickel Inorganic materials 0.000 description 5
- 229910000859 α-Fe Inorganic materials 0.000 description 5
- 239000000470 constituent Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 3
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 3
- 229910052721 tungsten Inorganic materials 0.000 description 3
- 239000010937 tungsten Substances 0.000 description 3
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 229910052748 manganese Inorganic materials 0.000 description 2
- 239000011572 manganese Substances 0.000 description 2
- CNJLMVZFWLNOEP-UHFFFAOYSA-N 4,7,7-trimethylbicyclo[4.1.0]heptan-5-one Chemical compound O=C1C(C)CCC2C(C)(C)C12 CNJLMVZFWLNOEP-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 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
- 230000009172 bursting Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur 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
- C22C38/12—Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
Definitions
- This invention relates to the manufacture of steel, the chief object being to provide a steel alloy or composition for use more particularly in making armor plates and gun tubes, and to obtain the requisite properties which are desirable in steel intended for these purposes by using only a comparatively small percentage of carbon.
- the steel besides having a low percentage of carbon 0011- tain's metallic constituents other than" ferrite, which constituents are ofsuch a character and are used in such proportions that the strength and toughness of the steel are afforded by the solution of. the saidconstitu ents 1n the ferrite.
- the proportion of car-- bon in the steel is so low that the hardening carbon formed on heating the steel above the first critical point-Ac (but not above the second critical point Ac has little effect upon the toughness.
- the carbon should not exceed .25 per cent.
- the most important of the metallic constituents I employ are molybdenum and nickel. I The composition of a steel which I-have found satisfactory is.
- Steel of a composition similar to that above stated is suitable not only in theman ufacture of gun tubes and armor ,plates but also for certain classes of armor and shields for small guns. Owing, however, to the unusually. low percentage of carbon, the steel ,does' not harden by mere quenching when 50 hot, sufiiciently' to impart to it a face of the extreme hardness necessary for the purpose above mentioned, and the steel must therefore besubjected to a process of cemen'tation. Not until after the steel has had its face cemented and differentially hardened does it possess the requisite extreme face hardness.
- Steel for use in the manufacture of armor plates comprising, in addition to the usual ferrite, .15 to .25 per cent. of carbon, 1.00 to 2.00 per cent. of molybdenum, 5.00 to 7.00 per cent. of nickel, tungsten not exceeding 3.00 per cent., and manganese not exceeding 0.70 per cent.
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
UNI ED STATES PATENT OFFICE.
WILLIAM BEARDMORE, OF GLASGOW, SCOTLAND.
1,007,055. N Drawing.
Specification of Letters Patent.
fs'rnnr. ALLOY.
v This invention relates to the manufacture of steel, the chief object being to provide a steel alloy or composition for use more particularly in making armor plates and gun tubes, and to obtain the requisite properties which are desirable in steel intended for these purposes by using only a comparatively small percentage of carbon.
According to this invention the steel besides having a low percentage of carbon 0011- tain's metallic constituents other than" ferrite, which constituents are ofsuch a character and are used in such proportions that the strength and toughness of the steel are afforded by the solution of. the saidconstitu ents 1n the ferrite. The proportion of car-- bon in the steel is so low that the hardening carbon formed on heating the steel above the first critical point-Ac (but not above the second critical point Ac has little effect upon the toughness. The carbon should not exceed .25 per cent. The most important of the metallic constituents I employ are molybdenum and nickel. I The composition of a steel which I-have found satisfactory is. as follows :carbon 0.15 to 0.25 per cent., molybdenum. 1.00 to 2.00 per cent., nickel 5.00 to 7 .00, per cent, tungsten not exceeding 3.00 per cent, manganese not exceeding 0.70 per cent. -In addition-to the above stated constituents the 49 steel would contain some small percentage of sulfur and phosphorus which however should of course be as small as possible;
Steel of a composition similar to that above stated is suitable not only in theman ufacture of gun tubes and armor ,plates but also for certain classes of armor and shields for small guns. Owing, however, to the unusually. low percentage of carbon, the steel ,does' not harden by mere quenching when 50 hot, sufiiciently' to impart to it a face of the extreme hardness necessary for the purpose above mentioned, and the steel must therefore besubjected to a process of cemen'tation. Not until after the steel has had its face cemented and differentially hardened does it possess the requisite extreme face hardness.
By suitably regulating the degree and extent of differential treatment to "which thesteel plates may be. subjected, it is possible to secure great hardness in some parts while retaining at other parts a ductile and tough condition. In the case of armor plates the qualities possessed by the steel enable them after \cementation'to resist the penetration Patented Oct. 31,1911.
Application filed December 5, 1910. Serial No. 595,721.
of modern capped projectiles and at the same time to resist the racking action of the projectiles, particularly in the case of plates of less thickness than the caliber of the guns used in attacking them. In the case of steel for gun tubes, an increased resistance to bursting or cracking of the tube by the shock of discharge is obtained.
What I claim and desire to secure by Letters Patent of the United States is 1. Steel for use in the manufacture of armor plates, containing in addition to the usual ferrite, a percentage of carbon not exeeding .25, and molybdenum and nickel in proportions sufficient to compensate for the deficiency in the strength and toughness of {she steel due to the low percentage of caron. I
2. Steel for use in the manufacture of armor plates,. containing, inaddition to the usual ferrite, a percentage of carbon not exceeding .25, and molybdenum, nickel, and tungsten, in proportions sufficient to compensate for the deficiency in the strength and toughness of the steel due to the low percentage of carbon.
-3. Steel for use in the manufacture of armor plates, comprising, in addition to the usual ferrite, .15 to .25 per cent. of carbon, 1.00 to 2.00 per cent. of molybdenum, 5.00 to 7.00 per cent. of nickel, tungsten not exceeding 3.00 per cent., and manganese not exceeding 0.70 per cent.
.In testimony whereof I afiix my signature in presence of two witnesses.
WM. BEARDMORE. Witnesses:
A. M. MITCHELL, HARMON O. A
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US59572110A US1007055A (en) | 1910-12-05 | 1910-12-05 | Steel alloy. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US59572110A US1007055A (en) | 1910-12-05 | 1910-12-05 | Steel alloy. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US1007055A true US1007055A (en) | 1911-10-31 |
Family
ID=3075369
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US59572110A Expired - Lifetime US1007055A (en) | 1910-12-05 | 1910-12-05 | Steel alloy. |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US1007055A (en) |
-
1910
- 1910-12-05 US US59572110A patent/US1007055A/en not_active Expired - Lifetime
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