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 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS54132421A (en) | Manufacture of high toughness bainite high tensile steel plate with superior weldability | |
| JPS54148124A (en) | Manufacture of high strength rall of excellent weldability | |
| JPS5719359A (en) | Cold-rolled steel plate with high strength for pressing | |
| JPS5478318A (en) | Manufacture of hot rolled, high tensile steel sheet with high ductility and low yield ratio | |
| JPS5528318A (en) | Manufacture of high tension structural steel of 50kg/mm2 class of excellent weldability | |
| JPS5789426A (en) | Manufacture of high-hardness and wear resistant steel having excellent weldability | |
| JPS5767130A (en) | Production of hot rolled dual phase high tensile steel plate | |
| JPS5687622A (en) | Production of nonquenched high toughness high tensile steel | |
| JPS55109503A (en) | Direct rolling method for hot cast billet | |
| JPS5577910A (en) | Manufacture through continuous annealing of cold rolled steel sheet for drawing work | |
| JPS5548406A (en) | Production of chrome plating steel sheet with excellent weldability | |
| JPS5579856A (en) | High toughness, wear resistant steel | |
| JPS5244719A (en) | Method of producing thick steel plates having excellent low temperatur e touchness, low yield ratio and high tensile strength after rolling | |
| JPS5323817A (en) | Production of low yield ratio, high toughness, high tensile steel plate | |
| JPS572836A (en) | Production of high strength steel of superior weldability | |
| JPS57120651A (en) | Steel plate for nof system galvanizing | |
| JPS57192225A (en) | Production of drawable cold-rolled steel sheet having baking-hardenability | |
| JPS5521517A (en) | Manufacture of hot-rolled coil | |
| JPS54127827A (en) | Production of low temperature steel | |
| JPS57143464A (en) | High-strength cold-rolled steel plate with superior enameling hardenability and its manufacture | |
| JPS57143430A (en) | Manufacture of high tensile steel with weldability and >=50kg/mm2 strength | |
| JPS56133425A (en) | Manufacture of cold rolled steel plate with superior enameling hardenability and workability | |
| JPS535017A (en) | High tensile cold rolled steel sheet and its production method | |
| JPS5466321A (en) | Manufacture of unrefined high tensile steel for welded structure | |
| JPS54124817A (en) | Steel of excellent sulfide resistance and excellent corrosion crack resistance |