JPS5528318A - Manufacture of high tension structural steel of 50kg/mm2 class of excellent weldability - Google Patents
Manufacture of high tension structural steel of 50kg/mm2 class of excellent weldabilityInfo
- Publication number
- JPS5528318A JPS5528318A JP9966878A JP9966878A JPS5528318A JP S5528318 A JPS5528318 A JP S5528318A JP 9966878 A JP9966878 A JP 9966878A JP 9966878 A JP9966878 A JP 9966878A JP S5528318 A JPS5528318 A JP S5528318A
- Authority
- JP
- Japan
- Prior art keywords
- high tension
- structural steel
- less
- class
- manufacture
- 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)
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
Abstract
PURPOSE: To manufacture the high tension structural steel excellent in the strength, toughness, and perfectly free from the weld cracks, without lowering the rolling efficiency, by cooling under a specified cooling condition the hot rolled steel sheet whose contents of C, Si, Mn, Al, and the carbon equivalent are specified.
CONSTITUTION: The steel, containing 0.03W0.09% C, 0.05W0.40% Si, 0.5W1.80% Mn, Al 0.10% or less, and the balance of Fe together with inevitable impurities, besides, whose carbon equivalent Ceq to be represented by the formula is 0.32% or less, is ordinarily hot rolled, being followed by quenching from about 770°C or more down to 500°C or less, at mean colling velocity above 30°C/sec over the range 770W550°C; hereby, the high tension structural steel of 50Kg/mm2 class, excellent in toughness and weldability is manufactured.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9966878A JPS5528318A (en) | 1978-08-16 | 1978-08-16 | Manufacture of high tension structural steel of 50kg/mm2 class of excellent weldability |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9966878A JPS5528318A (en) | 1978-08-16 | 1978-08-16 | Manufacture of high tension structural steel of 50kg/mm2 class of excellent weldability |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5528318A true JPS5528318A (en) | 1980-02-28 |
Family
ID=14253404
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9966878A Pending JPS5528318A (en) | 1978-08-16 | 1978-08-16 | Manufacture of high tension structural steel of 50kg/mm2 class of excellent weldability |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5528318A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100849269B1 (en) * | 2005-12-27 | 2008-07-29 | 가부시키가이샤 고베 세이코쇼 | Steel sheet having excellent weldability |
-
1978
- 1978-08-16 JP JP9966878A patent/JPS5528318A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100849269B1 (en) * | 2005-12-27 | 2008-07-29 | 가부시키가이샤 고베 세이코쇼 | Steel sheet having excellent weldability |
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