GB766971A - Improvements relating to corrosion resistant steel springs and spring material - Google Patents
Improvements relating to corrosion resistant steel springs and spring materialInfo
- Publication number
- GB766971A GB766971A GB6087/55A GB608755A GB766971A GB 766971 A GB766971 A GB 766971A GB 6087/55 A GB6087/55 A GB 6087/55A GB 608755 A GB608755 A GB 608755A GB 766971 A GB766971 A GB 766971A
- Authority
- GB
- United Kingdom
- Prior art keywords
- per cent
- corrosion resistant
- resistant steel
- spring material
- improvements relating
- 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
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/02—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for springs
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Steel (AREA)
Abstract
Springs are produced from nickel chromium alloy steel, which, after annealing, is austenitic and has such stability that the temperature at which 50 per cent of the austenite is transformed to martensite after deformation in tension equivalent to a true strain of 30 per cent is between 20 DEG C. -20 DEG C., which is quench annealed, subjected to cold working with a reduction in area of at least 50 per cent and not more than 70 per cent at a temperature such that it contains 40-75 per cent martensite, and then tempered at 350-550 DEG C. The alloy composition may be 0.07-0.2 per cent C, 0.-01 per cent N, 14-20 per cent Cr, 7-12 percent Ni, 0.2-2.0 per cent Si, 0.4-2.0 per cent Mn, 0-4 per cent Mo, 0-10 per cent Co, the balance being iron and impurities. The alloy may also contain up to 1 per cent of each of W, Ti, Nb, Ta, Cu, V and Al. The cold working, e.g. rolling, may be performed at temperatures below room temperature. Specification 722,427 is referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE766971X | 1954-03-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB766971A true GB766971A (en) | 1957-01-30 |
Family
ID=20330020
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB6087/55A Expired GB766971A (en) | 1954-03-27 | 1955-03-01 | Improvements relating to corrosion resistant steel springs and spring material |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB766971A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3109796A1 (en) * | 1980-03-19 | 1981-12-24 | Nisshin Steel Co., Ltd., Tokyo | STOLE |
| DE10152293B4 (en) * | 2001-10-23 | 2004-04-08 | Stahlwerk Ergste Westig Gmbh | Use a chrome steel alloy |
-
1955
- 1955-03-01 GB GB6087/55A patent/GB766971A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3109796A1 (en) * | 1980-03-19 | 1981-12-24 | Nisshin Steel Co., Ltd., Tokyo | STOLE |
| DE10152293B4 (en) * | 2001-10-23 | 2004-04-08 | Stahlwerk Ergste Westig Gmbh | Use a chrome steel alloy |
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