JPS5770257A - High strength steel plate - Google Patents
High strength steel plateInfo
- Publication number
- JPS5770257A JPS5770257A JP14602080A JP14602080A JPS5770257A JP S5770257 A JPS5770257 A JP S5770257A JP 14602080 A JP14602080 A JP 14602080A JP 14602080 A JP14602080 A JP 14602080A JP S5770257 A JPS5770257 A JP S5770257A
- Authority
- JP
- Japan
- Prior art keywords
- steel plate
- bainite
- martensite
- high strength
- strength steel
- 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.)
- Granted
Links
Abstract
PURPOSE: To provide a high strength steel plate having a low yield ratio and excellent in the balancing between strength and elongation, and elongating property for flanging, by preparing the steel so as to contain specified proportions of C, Mn, Si and S, and to comprise three-phase polygonal ferrite, bainite and martensite with specified area factors.
CONSTITUTION: The alloy contains 0.01W0.2% of C, 0.6W2.5% of Mn, 0.02W 1.5% of Si and 0.02% or less of S, and the structure thereof comprises three phases, i.e. polygonal ferrite, bainite and martensite with the area factors of the bainite and the martensite being 5W70% and 1W20% respectively. If desired, one or more elements selected from the group consisting of Cr (0.1W1.5%), Cu (0.1W0.6%), Ni (0.1W1%), and B (0.005W0.1%) and in addition thereto one or more elements selected from the group consisting of Nb (0.01W0.1%), V (0.02W0.2%), Ti (0.01W0.1%) and Zr (0.02W0.2%) can be added.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14602080A JPS5770257A (en) | 1980-10-17 | 1980-10-17 | High strength steel plate |
| US06/311,598 US4501626A (en) | 1980-10-17 | 1981-10-15 | High strength steel plate and method for manufacturing same |
| CA000388173A CA1195152A (en) | 1980-10-17 | 1981-10-16 | High strength steel plate and method for manufacturing same |
| FR8119609A FR2495189A1 (en) | 1980-10-17 | 1981-10-19 | High strength three-phase steel sheet - contg. polygonal ferrite, bainite and martensite, formed by hot rolling and controlled cooling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14602080A JPS5770257A (en) | 1980-10-17 | 1980-10-17 | High strength steel plate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5770257A true JPS5770257A (en) | 1982-04-30 |
| JPH0133543B2 JPH0133543B2 (en) | 1989-07-13 |
Family
ID=15398275
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14602080A Granted JPS5770257A (en) | 1980-10-17 | 1980-10-17 | High strength steel plate |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5770257A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0617203A (en) * | 1992-07-02 | 1994-01-25 | Nippon Steel Corp | High strength thin steel sheet with composite structure excellent in formability |
| US6280538B1 (en) | 1998-03-12 | 2001-08-28 | Kabushiki Kaisha Kobe Seiko Sho | Hot rolled high strength steel sheet with excellent formability |
| JP2015096644A (en) * | 2013-11-15 | 2015-05-21 | 新日鐵住金株式会社 | High-tensile hot-rolled steel sheet and production method thereof |
| WO2018026015A1 (en) | 2016-08-05 | 2018-02-08 | 新日鐵住金株式会社 | Steel sheet and plated steel sheet |
| US10689737B2 (en) | 2015-02-25 | 2020-06-23 | Nippon Steel Corporation | Hot-rolled steel sheet |
| US10752972B2 (en) | 2015-02-25 | 2020-08-25 | Nippon Steel Corporation | Hot-rolled steel sheet |
| US10913988B2 (en) | 2015-02-20 | 2021-02-09 | Nippon Steel Corporation | Hot-rolled steel sheet |
| US11236412B2 (en) | 2016-08-05 | 2022-02-01 | Nippon Steel Corporation | Steel sheet and plated steel sheet |
| US11401571B2 (en) | 2015-02-20 | 2022-08-02 | Nippon Steel Corporation | Hot-rolled steel sheet |
-
1980
- 1980-10-17 JP JP14602080A patent/JPS5770257A/en active Granted
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0617203A (en) * | 1992-07-02 | 1994-01-25 | Nippon Steel Corp | High strength thin steel sheet with composite structure excellent in formability |
| US6280538B1 (en) | 1998-03-12 | 2001-08-28 | Kabushiki Kaisha Kobe Seiko Sho | Hot rolled high strength steel sheet with excellent formability |
| JP2015096644A (en) * | 2013-11-15 | 2015-05-21 | 新日鐵住金株式会社 | High-tensile hot-rolled steel sheet and production method thereof |
| US10913988B2 (en) | 2015-02-20 | 2021-02-09 | Nippon Steel Corporation | Hot-rolled steel sheet |
| US11401571B2 (en) | 2015-02-20 | 2022-08-02 | Nippon Steel Corporation | Hot-rolled steel sheet |
| US10689737B2 (en) | 2015-02-25 | 2020-06-23 | Nippon Steel Corporation | Hot-rolled steel sheet |
| US10752972B2 (en) | 2015-02-25 | 2020-08-25 | Nippon Steel Corporation | Hot-rolled steel sheet |
| WO2018026015A1 (en) | 2016-08-05 | 2018-02-08 | 新日鐵住金株式会社 | Steel sheet and plated steel sheet |
| KR20190012262A (en) | 2016-08-05 | 2019-02-08 | 신닛테츠스미킨 카부시키카이샤 | Steel plate and coated steel plate |
| US10889879B2 (en) | 2016-08-05 | 2021-01-12 | Nippon Steel Corporation | Steel sheet and plated steel sheet |
| US11236412B2 (en) | 2016-08-05 | 2022-02-01 | Nippon Steel Corporation | Steel sheet and plated steel sheet |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0133543B2 (en) | 1989-07-13 |
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