US1943348A - Steel for nitriding - Google Patents
Steel for nitriding Download PDFInfo
- Publication number
- US1943348A US1943348A US556326A US55632631A US1943348A US 1943348 A US1943348 A US 1943348A US 556326 A US556326 A US 556326A US 55632631 A US55632631 A US 55632631A US 1943348 A US1943348 A US 1943348A
- Authority
- US
- United States
- Prior art keywords
- nitriding
- steel
- chromium
- approximately
- carbon
- 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 9
- 239000010959 steel Substances 0.000 title description 9
- 238000005121 nitriding Methods 0.000 title description 6
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 6
- 229910052804 chromium Inorganic materials 0.000 description 6
- 239000011651 chromium Substances 0.000 description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 5
- 229910052799 carbon Inorganic materials 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 3
- 229910052790 beryllium Inorganic materials 0.000 description 3
- ATBAMAFKBVZNFJ-UHFFFAOYSA-N beryllium atom Chemical compound [Be] ATBAMAFKBVZNFJ-UHFFFAOYSA-N 0.000 description 3
- 229910052750 molybdenum Inorganic materials 0.000 description 3
- 239000011733 molybdenum Substances 0.000 description 3
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000356 contaminant Substances 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 229910052748 manganese Inorganic materials 0.000 description 2
- 239000011572 manganese Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical group [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000000470 constituent 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
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
- C22C38/22—Ferrous alloys, e.g. steel alloys containing chromium with molybdenum or tungsten
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
Definitions
- This invention relates to improved metallic compositions of ferrous base subject to nitriding. It has long been known that certain alloy steels, particularly those relatively low in carbon, when 5 subjected to the action of ammonia gas at elevated temperatures, take on a surface hardness of high magnitude. Such alloy steels have generally contained chromium and aluminum.
- a series of steels which I have found to be particularly well adapted for nitriding purposes is the group characterized by the simultaneous presence of molybdenum and beryllium, each under 5% of the total. Such steels contain, of course, the usual steel constituents and contaminantscarbon, manganese, sulphur, etc.-and, in addition, the presence of chromium is desir-' able.
- An example of a composition which I have found quite suitable for nitriding purposes is a steel containing the following: Percent Carbon 0.15 Chromium 1.5
- Carbon should not exceed 0.5% in the members of this series of my invention, and chromium should not be over 3%.
- a steel for nitriding comprising carbon approximately from 0.15% to 0.5%, chromium from 1.5% to 3.0%, manganese about 0.5%, molybdenum from about 0.5% to 5%, beryllium from about 0.35% to about 5% and the balance iron with its common contaminants.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
Description
Patented Jan. 16, 1934 UNITED STATES PAT No Drawing. Application August 10, 1031 Serial No. 556,326
2 Claims. (Cl. 75-11) This invention relates to improved metallic compositions of ferrous base subject to nitriding. It has long been known that certain alloy steels, particularly those relatively low in carbon, when 5 subjected to the action of ammonia gas at elevated temperatures, take on a surface hardness of high magnitude. Such alloy steels have generally contained chromium and aluminum.
A series of steels which I have found to be particularly well adapted for nitriding purposes is the group characterized by the simultaneous presence of molybdenum and beryllium, each under 5% of the total. Such steels contain, of course, the usual steel constituents and contaminantscarbon, manganese, sulphur, etc.-and, in addition, the presence of chromium is desir-' able. An example of a composition which I have found quite suitable for nitriding purposes is a steel containing the following: Percent Carbon 0.15 Chromium 1.5
Carbon should not exceed 0.5% in the members of this series of my invention, and chromium should not be over 3%.
I claim:--
1. A steel for nitriding containing carbon approximately 0.l5%, chromium approximately 1.5%, manganese approximately 0.5%, molybdenum approximately 0.5% and beryllium approximately 0.35%, and the balance iron with its common contaminants. W
2. A steel for nitriding comprising carbon approximately from 0.15% to 0.5%, chromium from 1.5% to 3.0%, manganese about 0.5%, molybdenum from about 0.5% to 5%, beryllium from about 0.35% to about 5% and the balance iron with its common contaminants.
JOSEPH KENT SMITH.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US556326A US1943348A (en) | 1931-08-10 | 1931-08-10 | Steel for nitriding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US556326A US1943348A (en) | 1931-08-10 | 1931-08-10 | Steel for nitriding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US1943348A true US1943348A (en) | 1934-01-16 |
Family
ID=24220868
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US556326A Expired - Lifetime US1943348A (en) | 1931-08-10 | 1931-08-10 | Steel for nitriding |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US1943348A (en) |
-
1931
- 1931-08-10 US US556326A patent/US1943348A/en not_active Expired - Lifetime
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