JPS6421036A - High strength thick steel having superior cod characteristic in weld zone - Google Patents
High strength thick steel having superior cod characteristic in weld zoneInfo
- Publication number
- JPS6421036A JPS6421036A JP17568087A JP17568087A JPS6421036A JP S6421036 A JPS6421036 A JP S6421036A JP 17568087 A JP17568087 A JP 17568087A JP 17568087 A JP17568087 A JP 17568087A JP S6421036 A JPS6421036 A JP S6421036A
- Authority
- JP
- Japan
- Prior art keywords
- thick steel
- high strength
- weld zone
- strength thick
- superior
- 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
- 229910000831 Steel Inorganic materials 0.000 title abstract 6
- 239000010959 steel Substances 0.000 title abstract 6
- 239000000463 material Substances 0.000 abstract 2
- 229910052802 copper Inorganic materials 0.000 abstract 1
- 229910052748 manganese Inorganic materials 0.000 abstract 1
- 229910052759 nickel Inorganic materials 0.000 abstract 1
- 229910052758 niobium Inorganic materials 0.000 abstract 1
- 239000003208 petroleum Substances 0.000 abstract 1
- 229910052761 rare earth metal Inorganic materials 0.000 abstract 1
- 150000002910 rare earth metals Chemical class 0.000 abstract 1
- 229910052720 vanadium Inorganic materials 0.000 abstract 1
Landscapes
- Heat Treatment Of Steel (AREA)
Abstract
PURPOSE:To improve the COD characteristics of the weld zone of a high strength thick steel by reducing the Si and P contents in the steel and adding specified elements as required. CONSTITUTION:When a thick steel material is welded, the Si and P contents in the steel material are especially reduced and a compsn. contg., by weight, 0.03-0.15% C, 0.01-0.14% Si, 0.5-2.0% Mn, 0.005-0.05% Al and <0.004% P is provided. One or more among <0.03% Nb, <0.1% V, <1.5% Ni and <1.5% Cu and/or at least one of <0.02% Ti and <0.02% rare earth metal may be added to the compsn. as required. A high strength thick steel plate capable of satisfying strict COD characteristics required by the weld zone of the submarine jacket of a jacket type platform for producing petroleum is obtd.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17568087A JPS6421036A (en) | 1987-07-14 | 1987-07-14 | High strength thick steel having superior cod characteristic in weld zone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17568087A JPS6421036A (en) | 1987-07-14 | 1987-07-14 | High strength thick steel having superior cod characteristic in weld zone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6421036A true JPS6421036A (en) | 1989-01-24 |
Family
ID=16000356
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17568087A Pending JPS6421036A (en) | 1987-07-14 | 1987-07-14 | High strength thick steel having superior cod characteristic in weld zone |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6421036A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56133448A (en) * | 1980-03-22 | 1981-10-19 | Nippon Steel Corp | Steel for low temperature vessel with improved brittle rupture causing property at weld heat-affected zone |
| JPS57143470A (en) * | 1981-03-02 | 1982-09-04 | Nippon Steel Corp | High tensile steel with high cod value |
| JPS61270333A (en) * | 1985-05-23 | 1986-11-29 | Sumitomo Metal Ind Ltd | Production of high tensile steel having excellent cod characteristic in weld zone |
| JPS6293346A (en) * | 1985-10-18 | 1987-04-28 | Nippon Steel Corp | High strength steel excellent in cod characteristics in weld zone |
| JPS62107043A (en) * | 1985-11-02 | 1987-05-18 | Nippon Steel Corp | Steel material having superior ctod value at bonded part of welded joint |
-
1987
- 1987-07-14 JP JP17568087A patent/JPS6421036A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56133448A (en) * | 1980-03-22 | 1981-10-19 | Nippon Steel Corp | Steel for low temperature vessel with improved brittle rupture causing property at weld heat-affected zone |
| JPS57143470A (en) * | 1981-03-02 | 1982-09-04 | Nippon Steel Corp | High tensile steel with high cod value |
| JPS61270333A (en) * | 1985-05-23 | 1986-11-29 | Sumitomo Metal Ind Ltd | Production of high tensile steel having excellent cod characteristic in weld zone |
| JPS6293346A (en) * | 1985-10-18 | 1987-04-28 | Nippon Steel Corp | High strength steel excellent in cod characteristics in weld zone |
| JPS62107043A (en) * | 1985-11-02 | 1987-05-18 | Nippon Steel Corp | Steel material having superior ctod value at bonded part of welded joint |
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