GB689832A - Improvements in or relating to alloy steels of the austenitic type - Google Patents
Improvements in or relating to alloy steels of the austenitic typeInfo
- Publication number
- GB689832A GB689832A GB15395/49A GB1539549A GB689832A GB 689832 A GB689832 A GB 689832A GB 15395/49 A GB15395/49 A GB 15395/49A GB 1539549 A GB1539549 A GB 1539549A GB 689832 A GB689832 A GB 689832A
- Authority
- GB
- United Kingdom
- Prior art keywords
- per cent
- relating
- alloy steels
- austenitic type
- alloy
- 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
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
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/54—Ferrous alloys, e.g. steel alloys containing chromium with nickel with boron
Abstract
An alloy steel for use in apparatus capable of withstanding high temperatures consists of 15-19 per cent Cr, 7-12 per cent Ni, 0.03-0.1 per cent C, 0.01-0.1 per cent B, from 4-12.7 times the carbon content of a carbide former, and optionally 0.2-2 per cent Mn and 0.1-3 per cent Si, the remainder being iron and the usual impurities. The carbide former is Ti and/or Nb and/or Ta and/or Zr and preferably Ti and/or Nb, and is preferably from 5.5-11 times the carbon content of the alloy. The P and S content is kept below 0.05 per cent. The steel can be heat-treated by quenching above 1900 DEG F and tempering between 900 DEG F and 1500 DEG F.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US689832XA | 1948-06-12 | 1948-06-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB689832A true GB689832A (en) | 1953-04-08 |
Family
ID=22085944
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB15395/49A Expired GB689832A (en) | 1948-06-12 | 1949-06-09 | Improvements in or relating to alloy steels of the austenitic type |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB689832A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0037959A1 (en) * | 1980-04-02 | 1981-10-21 | Sumitomo Chemical Company, Limited | Method of reducing or avoiding surface defects in a specific steel resistant to concentrated nitric acid |
-
1949
- 1949-06-09 GB GB15395/49A patent/GB689832A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0037959A1 (en) * | 1980-04-02 | 1981-10-21 | Sumitomo Chemical Company, Limited | Method of reducing or avoiding surface defects in a specific steel resistant to concentrated nitric acid |
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