GB780290A - Improvements in stainless steel - Google Patents
Improvements in stainless steelInfo
- Publication number
- GB780290A GB780290A GB28395/55A GB2839555A GB780290A GB 780290 A GB780290 A GB 780290A GB 28395/55 A GB28395/55 A GB 28395/55A GB 2839555 A GB2839555 A GB 2839555A GB 780290 A GB780290 A GB 780290A
- Authority
- GB
- United Kingdom
- Prior art keywords
- per cent
- inch
- stainless steel
- sheet
- knife blades
- 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
- C22C38/32—Ferrous alloys, e.g. steel alloys containing chromium with boron
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Steel (AREA)
Abstract
A stainless steel which may be subjected to a rolling operation and to a hardening treatment, for example in the production of knife blades, has a composition in the following range: C, 0.2-1.0 per cent; Cr, 11.5-15.0 per cent; Mn, 0.15-2.0 per cent; Si, 0.15-1.0 per cent; Co, 1.0-6.0 per cent; B, 0.001-0.005 per cent; Fe, the balance except for impurities including not more than 0.04 per cent each of S and P. In an example a steel within the range was heated to 1082 DEG C. reduced in thickness by 1/4 inch in each of nine passes through a rolling mill to form a sheet 3/16 inch thick at a finishing temperature of 788-815 DEG C. The sheet was reheated at 1082 DEG C., rolled to 3/32 inch, annealed at 788 DEG C. for five hours, formed into knife blades and then quenched from 1038 DEG C. in water.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US780290XA | 1954-10-05 | 1954-10-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB780290A true GB780290A (en) | 1957-07-31 |
Family
ID=22141472
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB28395/55A Expired GB780290A (en) | 1954-10-05 | 1955-10-05 | Improvements in stainless steel |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB780290A (en) |
-
1955
- 1955-10-05 GB GB28395/55A patent/GB780290A/en not_active Expired
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