GB1342620A - Steel - Google Patents
SteelInfo
- Publication number
- GB1342620A GB1342620A GB6016171A GB1342620DA GB1342620A GB 1342620 A GB1342620 A GB 1342620A GB 6016171 A GB6016171 A GB 6016171A GB 1342620D A GB1342620D A GB 1342620DA GB 1342620 A GB1342620 A GB 1342620A
- Authority
- GB
- United Kingdom
- Prior art keywords
- temperature
- austenite
- rolled
- steel
- ferrite
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Sheet Steel (AREA)
- Heat Treatment Of Steel (AREA)
Abstract
1342620 Producing steel strip FRIED KRUPP HUTTENWERKE AG 23 Dec 1971 [24 Dec 1970] 60161/71 Heading C7A A stainless semi-ferritic steel, suitable for forming cold strip comprises in weight per cent:- the total of phosphorus and arsenic being at least 0À05% the balance being iron and compatible impurity. This steel which contains 10 to 40% austenite, is allowed to cool from the solidus temperature, held at 700 to 780‹ C for 2 to 10 hours to transform the austenite to ferrite and carbide, and then heated to a temperature just below Ac 1 , (800-950‹ C), rolled at that temperature, air cooled, and cold-rolled to the required thickness. The cycle of heat treatment can also be effected on an ingot which has been hot-rolled in a cogging mill. The steps of transforming from austenite to ferrite, and hot-rolling below Ac 1 temperature may be separated by an optional cooling step, e.g. to room temperature.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2063666A DE2063666C2 (en) | 1970-12-24 | 1970-12-24 | Application of a process for processing semi-ferritic, rust-proof steel, which is still air-hardening with austenite contents of 10 to 40%, on cold strip free of longitudinal grooves and steel suitable for this |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1342620A true GB1342620A (en) | 1974-01-03 |
Family
ID=5792079
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB6016171A Expired GB1342620A (en) | 1970-12-24 | 1971-12-23 | Steel |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US3776720A (en) |
| JP (2) | JPS513293B1 (en) |
| AT (1) | AT325647B (en) |
| BE (1) | BE776591A (en) |
| DE (1) | DE2063666C2 (en) |
| ES (1) | ES397992A1 (en) |
| FR (1) | FR2119530A5 (en) |
| GB (1) | GB1342620A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5510648B2 (en) * | 1973-04-23 | 1980-03-18 | ||
| US4263063A (en) * | 1979-07-05 | 1981-04-21 | The United States Of America As Represented By The United States Department Of Energy | Process for stabilizing dimensions of duplex stainless steels for service at elevated temperatures |
| WO1993017143A1 (en) * | 1992-02-25 | 1993-09-02 | Kawasaki Steel Corporation | High-chromium and high-phosphorus ferritic stainless steel excellent in weatherproofness and rustproofness |
-
1970
- 1970-12-24 DE DE2063666A patent/DE2063666C2/en not_active Expired
-
1971
- 1971-12-02 AT AT1038171A patent/AT325647B/en not_active IP Right Cessation
- 1971-12-13 BE BE776591A patent/BE776591A/en unknown
- 1971-12-15 ES ES397992A patent/ES397992A1/en not_active Expired
- 1971-12-21 FR FR7145866A patent/FR2119530A5/fr not_active Expired
- 1971-12-23 GB GB6016171A patent/GB1342620A/en not_active Expired
- 1971-12-24 JP JP46104745A patent/JPS513293B1/ja active Pending
- 1971-12-27 US US00212794A patent/US3776720A/en not_active Expired - Lifetime
-
1972
- 1972-05-24 JP JP47050825A patent/JPS4885410A/ja active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| ES397992A1 (en) | 1975-04-16 |
| AT325647B (en) | 1975-10-27 |
| BE776591A (en) | 1972-04-04 |
| JPS513293B1 (en) | 1976-02-02 |
| US3776720A (en) | 1973-12-04 |
| DE2063666A1 (en) | 1972-05-25 |
| FR2119530A5 (en) | 1972-08-04 |
| DE2063666C2 (en) | 1978-04-13 |
| JPS4885410A (en) | 1973-11-13 |
| ATA1038171A (en) | 1975-01-15 |
| DE2063666B2 (en) | 1972-05-25 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PCNP | Patent ceased through non-payment of renewal fee |