ASTM A709/709M Structural Steel Plate for Bridges
Discover the durability and reliability of ASTM A709/A709M structural steel plates tailored for bridge construction, renowned for their high-strength properties and corrosion resistance. These plates are engineered to withstand demanding environments, offering optimal performance in bridge components such as girders, decks, and supports. With various grades including Grade 36, Grade 50, Grade 50W, Grade HPS 50W, and Grade HPS 70W, each plate meets stringent mechanical requirements, ensuring structural integrity and safety under diverse weather conditions. Certified under ASTM standards, these steel plates are trusted for their weldability and impact toughness, making them ideal for constructing durable and resilient bridges that enhance transportation infrastructure.
Chemical Composition of ASTM A709/709M Structural Steel Plate for Bridges
| Grade |
Carbon (C) (%) |
Manganese (Mn) (%) |
Phosphorus (P) (%) |
Sulfur (S) (%) |
Silicon (Si) (%) |
Copper (Cu) (%) |
Nickel (Ni) (%) |
Chromium (Cr) (%) |
Molybdenum (Mo) (%) |
Vanadium (V) (%) |
| Grade 36 |
≤0.26 |
1.35-1.85 |
≤0.04 |
≤0.05 |
0.15-0.40 |
– |
– |
– |
– |
– |
| Grade 50 |
≤0.23 |
1.35-2.00 |
≤0.04 |
≤0.05 |
0.15-0.40 |
0.20 min |
0.25 min |
– |
– |
– |
| Grade 50W |
≤0.20 |
0.50-1.30 |
≤0.04 |
≤0.05 |
0.30-0.65 |
0.25-0.40 |
0.50 max |
0.50-1.25 |
– |
0.10-0.25 |
| Grade HPS 50W |
≤0.12 |
1.50-2.00 |
≤0.015 |
≤0.006 |
0.15-0.50 |
0.90-1.25 |
0.50 max |
0.40-0.65 |
0.08-0.25 |
0.01-0.08 |
| Grade HPS 70W |
≤0.12 |
1.50-2.00 |
≤0.015 |
≤0.006 |
0.15-0.50 |
0.90-1.25 |
0.50 max |
0.40-0.65 |
0.08-0.25 |
0.01-0.08 |
Mechanical Properties of ASTM A709/709M Structural Steel Plate for Bridges
| Grade |
Yield Strength, min (MPa) |
Tensile Strength (MPa) |
Elongation in 2 inches (min, %) |
Elongation in 8 inches (min, %) |
| Grade 36 |
250 |
400-550 |
21 |
18 |
| Grade 50 |
345 |
450-650 |
21 |
18 |
| Grade 50W |
345 |
450-650 |
21 |
18 |
| Grade HPS 50W |
345 |
450-620 |
18 |
15 |
| Grade HPS 70W |
485 |
570-720 |
17 |
14 |
Specifications
| Standard |
ASTM A709/709M Structural Steel Plate for Bridges |
| Steel Grade/Material |
Grade 36, Grade 50, Grade 50W, Grade HPS 50W, Grade HPS 70W |
| Dimension |
T 5-350mm × W 900-4100mm × L 3000-25000mm |
| Packing |
Packed with steel-framed plywood pallets |
| Supply Conditions |
AR = as-rolled TM = thermo-mechanical controlled processing CR = controlled QT = quenched and tempered N = normalized |
| Place of Origin |
Made in China |
| MOQ |
50 Tons |
| Transportation |
Railway, By Sea |
Applications of ASTM A709/709M Structural Steel Plate for Bridges
Bridge Construction: ASTM A709/A709M structural steel plates are integral in constructing bridges of various spans and designs, providing essential strength and durability to bridge components such as girders, decks, and supports.
Highway Infrastructure: Used extensively in highway infrastructure projects to enhance safety and longevity, these plates ensure robust performance under varying environmental conditions.
Railway Bridges: Applied in the construction of railway bridges, supporting heavy loads and ensuring reliable transportation routes across rail networks.
Urban Infrastructure: Utilized in urban infrastructure development for constructing pedestrian bridges, overpasses, and elevated roadways, enhancing connectivity and urban mobility.
Corrosion Resistance: Designed with corrosion-resistant properties, ASTM A709/A709M plates are suitable for bridges exposed to marine and industrial environments, extending service life and reducing maintenance costs.
Structural Components: Employed in various structural components beyond bridges, such as buildings, stadiums, and industrial structures, where high-strength steel is required for safety and reliability.
