GB791884A - Improvements in or relating to low alloy steels and articles thereof - Google Patents
Improvements in or relating to low alloy steels and articles thereofInfo
- Publication number
- GB791884A GB791884A GB19574/55A GB1957455A GB791884A GB 791884 A GB791884 A GB 791884A GB 19574/55 A GB19574/55 A GB 19574/55A GB 1957455 A GB1957455 A GB 1957455A GB 791884 A GB791884 A GB 791884A
- Authority
- GB
- United Kingdom
- Prior art keywords
- per cent
- max
- per
- articles
- treatment
- 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
Links
- 229910000831 Steel Inorganic materials 0.000 title abstract 5
- 239000010959 steel Substances 0.000 title abstract 5
- 239000000956 alloy Substances 0.000 title 1
- 229910045601 alloy Inorganic materials 0.000 title 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract 3
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 abstract 1
- 238000005260 corrosion Methods 0.000 abstract 1
- 230000007797 corrosion Effects 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- 239000012535 impurity Substances 0.000 abstract 1
- 229910052742 iron Inorganic materials 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 239000002184 metal Substances 0.000 abstract 1
- 229910052751 metal Inorganic materials 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 239000003129 oil well Substances 0.000 abstract 1
- 238000010791 quenching Methods 0.000 abstract 1
- 230000000171 quenching effect Effects 0.000 abstract 1
- 238000005496 tempering Methods 0.000 abstract 1
- 230000009466 transformation Effects 0.000 abstract 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
- 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
- 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
- C22C38/24—Ferrous alloys, e.g. steel alloys containing chromium with vanadium
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
A process of manufacturing articles from a steel comprising 0.08-0.2 per cent C, 0.6-5.0 per cent Cr, and 0.15-1.2 per cent Al the balance being iron and unavoidable impurities comprises subjecting the article to a carbide diffusing treatment at a temperature close to but below that of the a-g transformation, the temperature being between 730 and 800 DEG C. The time of treatment depends on the thickness of metal and may be 3 hours per 1/2 inch for rolled articles and 8 hours per 1 inch for cast or forged articles. The carbide diffusing treatment may be followed by a further treatment comprising quenching from 950-1080 DEG C. and tempering at 600-700 DEG C., the steel need not be cooled before heating to 950-1080 DEG C. The steel may have the following analysis:-C 0.08-0.2 per cent, Cr. 0.6-5.0 per cent, Al 0.15-1.2 per cent, Mn 0.3-1.2 per cent, Si 0.1-0.6 per cent Mo 0-0.5 per cent, V 0-1.0 per cent, Ti 0-1.0 per cent, Ni 0.2 per cent max., Cu 0.4 per cent max., S 0.03 per cent max., P 0.04 per cent max., N 0.02 per cent max., O 0.01 per cent max., balance Fe. B, and Ce may also be present in amount 0.005-0.01 per cent. It is stated that the steel after the treatment of the invention is resistant to hydrogen sulphide corrosion and is suitable for use as oil well tubing.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR791884X | 1954-07-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB791884A true GB791884A (en) | 1958-03-12 |
Family
ID=9228123
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB19574/55A Expired GB791884A (en) | 1954-07-13 | 1955-07-06 | Improvements in or relating to low alloy steels and articles thereof |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB791884A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4354882A (en) * | 1981-05-08 | 1982-10-19 | Lone Star Steel Company | High performance tubulars for critical oil country applications and process for their preparation |
| US4394189A (en) * | 1981-05-08 | 1983-07-19 | Lone Star Steel Company | High performance tubulars for critical oil country applications and improved process for their preparation |
-
1955
- 1955-07-06 GB GB19574/55A patent/GB791884A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4354882A (en) * | 1981-05-08 | 1982-10-19 | Lone Star Steel Company | High performance tubulars for critical oil country applications and process for their preparation |
| US4394189A (en) * | 1981-05-08 | 1983-07-19 | Lone Star Steel Company | High performance tubulars for critical oil country applications and improved process for their preparation |
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