JPS55119152A - Nonrefined high tensile steel plate with low yield ratio - Google Patents
Nonrefined high tensile steel plate with low yield ratioInfo
- Publication number
- JPS55119152A JPS55119152A JP2701379A JP2701379A JPS55119152A JP S55119152 A JPS55119152 A JP S55119152A JP 2701379 A JP2701379 A JP 2701379A JP 2701379 A JP2701379 A JP 2701379A JP S55119152 A JPS55119152 A JP S55119152A
- Authority
- JP
- Japan
- Prior art keywords
- steel plate
- high tensile
- nonrefined
- low yield
- yield ratio
- 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.)
- Pending
Links
Landscapes
- Heat Treatment Of Steel (AREA)
Abstract
PURPOSE: To provide a nonrefined high tensile steel plate with low yield ratio compared to a steel plate of the same strength level which is suitable for public works and construction obtained by a method wherein a minute amount of Ti is contained in steel and hardenability is enhanced by a small amount of B.
CONSTITUTION: A nonrefined high tensile steel plate comprises C; 0.11W0.35%, Si; 0.05W0.90%, Mn; 0.75W2.50%, Mo; 0.05W0.80%, Nb; 0.01W0.08%, Sol Al; 0.03W0.15%, B; 0.0002W0.0015%, Ti; 0.01W0.08%, a balance of Fe and ineveitable impurities. Because Ti within this composition forms TiN within steel to prevent the increase of solid solution N amount, hardenability enhancing effect of B is effectively exhibited. Therefore, the steel forms bainite formation during free cooling treatment after hot rolling and a high tensile steel plate with low yield ratio having good strength and tenacity is obtained without refining and rolling.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2701379A JPS55119152A (en) | 1979-03-07 | 1979-03-07 | Nonrefined high tensile steel plate with low yield ratio |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2701379A JPS55119152A (en) | 1979-03-07 | 1979-03-07 | Nonrefined high tensile steel plate with low yield ratio |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS55119152A true JPS55119152A (en) | 1980-09-12 |
Family
ID=12209207
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2701379A Pending JPS55119152A (en) | 1979-03-07 | 1979-03-07 | Nonrefined high tensile steel plate with low yield ratio |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS55119152A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4851054A (en) * | 1982-05-18 | 1989-07-25 | Kabushiki Kaisha Kobe Seiko Sho | Method of producing rolled steel having excellent resistance to sulfide stress corrosion cracking |
| EP2617850A4 (en) * | 2010-09-17 | 2015-08-26 | Jfe Steel Corp | High-strength hot rolled steel sheet having excellent toughness and method for producing same |
-
1979
- 1979-03-07 JP JP2701379A patent/JPS55119152A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4851054A (en) * | 1982-05-18 | 1989-07-25 | Kabushiki Kaisha Kobe Seiko Sho | Method of producing rolled steel having excellent resistance to sulfide stress corrosion cracking |
| EP2617850A4 (en) * | 2010-09-17 | 2015-08-26 | Jfe Steel Corp | High-strength hot rolled steel sheet having excellent toughness and method for producing same |
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