US1835151A - Steel alloy - Google Patents
Steel alloy Download PDFInfo
- Publication number
- US1835151A US1835151A US189457A US18945727A US1835151A US 1835151 A US1835151 A US 1835151A US 189457 A US189457 A US 189457A US 18945727 A US18945727 A US 18945727A US 1835151 A US1835151 A US 1835151A
- Authority
- US
- United States
- Prior art keywords
- steel alloy
- aluminium
- alloy
- per cent
- nitrogenization
- 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
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
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T407/00—Cutters, for shaping
- Y10T407/27—Cutters, for shaping comprising tool of specific chemical composition
Definitions
- alloys are easily produced, acquire great hardness in their marginal layers With relatively high hardness penetration when subjected to nitrogenization, and are distinguished further by particularly good prop erties of strength (in particular toughness and insensitiveness towards temper brittleness) and by their being well suited for heat treatment in large cross sections.
- This object is'attained according to the invention by using for the manufacture of the above-mentioned articles steel alloys which contain, either separately or in any desired combination, 1 to 8 per cent of silicon, manganese, nickel, chromium, molybdenum, tungsten, vanadium, titanium or zirconium, less than (1.5 per cent of aluminium, and up to 0.7 per centof carbon.
- such steel alloys may also be employed for the manufacture of the articles mentioned, which contain 0.5 to 2 per cent of aluminium. In this case it is proper to increase the percentage of aluminium, Within the limits stated, in accordance with the total percentage of the other alloy constituents.
- An article hardened in its marginal layers by nitrogenization consisting of an alloy containing up to 0.7% of carbon, 1 to 8% of chromium, less than 0.5% of aluminium, and the principal portion of the remainder 1ron.
- An article hardened in its marginal layers by nitrogenization comprising an alloy containing up to 0.7% of carbon, 1 to 8% of at least one of the elements of the group, silicon, manganese, nickel, chromium, molybdenum, tungsten, vanadium, titanium and zirconium, less than 0.5% of aluminium, and the principal portion of the remainder being 1ron.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Cookers (AREA)
- Nonmetallic Welding Materials (AREA)
Description
Patented Dec. 8, 1931 v UNITED STATES PATENT OFFICE ADOLF FRY, OF ESSEN, GERMANY, ASSIGNOR, BY MESNE ASSIGNMENTS, TO THE NITRALLOY CORPORATION, A CORPORATION OF DELAWARE STEEL ALLOY N Drawing. Application filed May 6!, 1927,
alloys are easily produced, acquire great hardness in their marginal layers With relatively high hardness penetration when subjected to nitrogenization, and are distinguished further by particularly good prop erties of strength (in particular toughness and insensitiveness towards temper brittleness) and by their being well suited for heat treatment in large cross sections. This object is'attained according to the invention by using for the manufacture of the above-mentioned articles steel alloys which contain, either separately or in any desired combination, 1 to 8 per cent of silicon, manganese, nickel, chromium, molybdenum, tungsten, vanadium, titanium or zirconium, less than (1.5 per cent of aluminium, and up to 0.7 per centof carbon.-
The following are representative examples 5 of alloy steels falling within the range above indicated and showing when nitrogenized the characterizing properties of surface hardness, hardness penetration, toughness and insensitiveness toward temper brittleness above mentioned:
Example 0 Al Cr -Mn Mo Si If the total percentage of silicon, manganese, nickel, chromlum, molybdenum, tungsten,vanad1um,t1tan1um or zlrconium, elther separately or in any desired combination,
loys which has not yet been disclosed, which Serial No. 189,457, and in Germany June 2, 1926. Renewed October 29, 1930.
amounts to between 4 to 8 per cent, preferably such steel alloys may also be employed for the manufacture of the articles mentioned, which contain 0.5 to 2 per cent of aluminium. In this case it is proper to increase the percentage of aluminium, Within the limits stated, in accordance with the total percentage of the other alloy constituents.
The subject matter of the next preceding paragraph forms the basis of my divisional application Serial No. 557,366 filed August 15, 1931.
WVhat I claim and desire to secure by Letters Patent, i's:
1. An article hardened in its marginal layers by nitrogenization consisting of an alloy containing up to 0.7% of carbon, 1 to 8% of chromium, less than 0.5% of aluminium, and the principal portion of the remainder 1ron.
2. An article hardened in its marginal layers by nitrogenization comprising an alloy containing up to 0.7% of carbon, 1 to 8% of at least one of the elements of the group, silicon, manganese, nickel, chromium, molybdenum, tungsten, vanadium, titanium and zirconium, less than 0.5% of aluminium, and the principal portion of the remainder being 1ron.
The foregoing specification signed at Cologne, Germany, this 16th day of April,
ADOLF FRY.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE1835151X | 1926-06-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US1835151A true US1835151A (en) | 1931-12-08 |
Family
ID=7745320
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US189457A Expired - Lifetime US1835151A (en) | 1926-06-02 | 1927-05-06 | Steel alloy |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US1835151A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4853049A (en) * | 1984-02-13 | 1989-08-01 | Caterpillar Inc. | Nitriding grade alloy steel article |
| US4853181A (en) * | 1986-06-18 | 1989-08-01 | Wert David E | Hot work tool steel |
-
1927
- 1927-05-06 US US189457A patent/US1835151A/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4853049A (en) * | 1984-02-13 | 1989-08-01 | Caterpillar Inc. | Nitriding grade alloy steel article |
| US4853181A (en) * | 1986-06-18 | 1989-08-01 | Wert David E | Hot work tool steel |
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