US2197955A - Steels and alloys having elevated chromium content - Google Patents
Steels and alloys having elevated chromium content Download PDFInfo
- Publication number
- US2197955A US2197955A US197728A US19772838A US2197955A US 2197955 A US2197955 A US 2197955A US 197728 A US197728 A US 197728A US 19772838 A US19772838 A US 19772838A US 2197955 A US2197955 A US 2197955A
- Authority
- US
- United States
- Prior art keywords
- alloys
- steels
- chromium content
- elevated
- elevated chromium
- 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
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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
- C22C38/28—Ferrous alloys, e.g. steel alloys containing chromium with titanium or zirconium
-
- 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
- C22C38/36—Ferrous alloys, e.g. steel alloys containing chromium with more than 1.7% by weight of carbon
Description
desired with addition also of zirconium in quandeclare that what I claim is:
U1-u"r*1a: sures-PATENTOFF CE- I I 4 2,197,955 I sri-mts AND ALLOYS navm'e ELEVATED cnnomum con-ram Emanuel Valenta, Pilsen, Czechoslovakia, assignor, by mesne assignments, to Electro-Metal- V lurgical Company, New York, N. Y., a corporation of West Virginia a No Drawing. Application March at, 1938, Serial No. 197,728. In Czechoslovakia October 12 2 Claims. (Cl. 75-126) Steels and alloys having essentially a content the mechanical strength values, more particularof 5-30% of chromium and -3% of. carbon are ly in thecase of the bending strength, and in the characterised by high resistivity towards heat stability during temperature changes; it prevents, and corrosion, which in many casesis not atfor example, the appearance of cracks in the tainable with any other compositionof steels and proximity of welds. Very good results have been 5 alloys of this type. Their applicability in prac-' obtained, more particularly in the case of a contice, however, is very much limited by the grain tent of 0.35% of carbon, but an extensive imcoarseness which appears more particularly in provement is also obtained'in the-case of higher the case of cast pieces, this grain coarseness recarbon contents. sulting in a reduction of all mechanical strength This influence is particularly apparent in the 10 values, in the case of temperature changes, for case of alloys and steels which contain further example during welding, giving rise to the ready additional elements, such as for example silicon, formation of cracks. aluminium, copper, nickel and the like, individ- These great disadvantages are avoided accordually or in any desired combinations upto 5%. I 5 ing to the invention by adding to the steelsand Having now particularly described and ascer alloys-of this type 0.05-0.5% of nitrogen together tained the nature of my said invention and in with ODS-0.5% of titanium in any combination, if whatmanner the same is to be performed, I-
titles of ODS-0.5%. The common addition of 1. An alloy containing 5 to 30% chromium-an o titanium and nitrogen, with in certain cases the effective amount to 3% carbon, 0.05 to 0.5% nitrosimultaneous presenceof zirconium as well, has gen, 0.05 to 0.5% titanium and the remainder a considerable influence on making the texture iron. 1 i flner'than has been obtained. by mere presence 2. An alloy as defined in claim 1, wherein the y of titanium ornitrogen alone. The texture imcarbon content does not exceed 0.35%. v a provement is shown by a substantial increase in I f EMANUEL VALENTA. g5
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CS2197955X | 1935-10-12 |
Publications (1)
Publication Number | Publication Date |
---|---|
US2197955A true US2197955A (en) | 1940-04-23 |
Family
ID=5458705
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US197728A Expired - Lifetime US2197955A (en) | 1935-10-12 | 1938-03-23 | Steels and alloys having elevated chromium content |
Country Status (1)
Country | Link |
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US (1) | US2197955A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3245269A (en) * | 1958-09-25 | 1966-04-12 | James O Ivie | Automatic sampling device |
US3367770A (en) * | 1965-02-01 | 1968-02-06 | Latrobe Steel Co | Ferrous alloys and abrasion resistant articles thereof |
FR2356738A1 (en) * | 1976-06-30 | 1978-01-27 | Armco Steel Corp | STRIPES, SHEETS AND MANUFACTURED PRODUCTS IN STAINLESS STEEL FERRITIC NITRIDES INTERNALLY |
-
1938
- 1938-03-23 US US197728A patent/US2197955A/en not_active Expired - Lifetime
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3245269A (en) * | 1958-09-25 | 1966-04-12 | James O Ivie | Automatic sampling device |
US3367770A (en) * | 1965-02-01 | 1968-02-06 | Latrobe Steel Co | Ferrous alloys and abrasion resistant articles thereof |
FR2356738A1 (en) * | 1976-06-30 | 1978-01-27 | Armco Steel Corp | STRIPES, SHEETS AND MANUFACTURED PRODUCTS IN STAINLESS STEEL FERRITIC NITRIDES INTERNALLY |
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