Structural Steel - Bridge Grade
ASTM A709 - Bridge Structural Steel
Structural steel specifically optimized for bridge construction with enhanced fatigue resistance, weldability, and toughness. Available in grades 36, 50, 50W (weathering), HPS 50W, HPS 70W, and 100/100W.
Material Type
ASTM A709 - Bridge Structural Steel
Mechanical Properties
Yield Strength: 250-690 MPa (varies by grade)
Tensile Strength: 400-895 MPa (varies by grade)
Key Features
- Optimized for fatigue resistance - Critical for bridges
- Enhanced weldability
- Excellent toughness - Low-temperature performance
- Weathering variants available (50W, HPS 50W, HPS 70W)
- HPS grades offer higher performance
Applications
- Steel bridges
- Highway structures
- Pedestrian bridges
- Railway bridges
- Viaducts