SBHS
SBHS (Steel for Bridge High Performance Structures) features high-performance, high-tensile strength steel that was developed based on the results of a joint project carried out by industry and academia for the purpose of reducing the construction costs of steel bridges.
Features
- 1Higher yield strength than conventional steel (constant yield strength irrespective of sheet thickness)
- 2Greater ease of fabrication and welding than conventional steel, eliminating preheating in some cases, and enabling reducing preheating temperature.
| Steel | Yield strength （N/mm2） |
Tensile strength （N/mm2） |
Preheating | Charpy test | ||
|---|---|---|---|---|---|---|
| Test temperature (℃) | Absorption energy (J) | Test direction | ||||
| SBHS500 (W) | 500 or more | 570～720 | Not required | -5 | 100 or more | Perpendicular to direction of rolling |
| SBHS700 (W) | 700 or higher | 780～930 | 50℃ | -40 | 100 or more | |
- 3Charpy test conducted perpendicular to rolling direction; any plate design direction.
- 4Improves ease of welding and cold fabrication, etc.; improves formability in manufacturing
NIPPON STEEL estimation results: 3-span continuous composite, 2 main girders (maximum span 60m)
- Reduction in total construction costs:
Maximum reduction of approximately 10%(using SBHS500)
- Reduction of steel weight:
Using SBHS500:Approximately 7% reduction (relative to SM570)
Using SBHS700:Approximately 15% reduction (relative to SM570)
Examples of use
Tokyo Gate Bridge (Japan)
The use of SBHS reduced total weight by 3% and total construction cost by 12% (estimates by MLIT).
Nagata Bridge (Japan)
First use of NIPPON STEEL's SBHS high yield steel plate for bridges after this steel was covered by JIS.
Catalogs
For further product information
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