Product Overview
SA709 Grade 50W is a high-strength weathering structural steel specially developed for construction and bridge engineering.
The steel plate contains corrosion-resistant elements such as copper (Cu), chromium (Cr), and nickel (Ni), which allow it to naturally form a dense and firmly adherent protective oxide layer when exposed to the atmosphere for a long time, effectively slowing down the corrosion process.
Compared to traditional carbon steel, SA709 Grade 50W not only has higher yield and tensile strength but also can be used for extended periods without frequent repainting, making it outstanding in reducing maintenance costs and extending service life.
It is widely used in bridges, building facades, landscape projects, and other structural applications exposed to outdoor weather.
Chemical Composition (%)
|
C max |
Mn |
P max |
S max |
Si |
Ni |
Cr |
Cu |
V |
|
≤0.19 |
0.75-1.35 |
≤0.04 |
≤0.05 |
0.15-0.50 |
0.25-0.40 |
0.40-0.70 |
0.25-0.55 |
0.02-0.10 |
Mechanical Properties
|
Thickness Range |
Tensile Strength ≥ MPa |
Yield Strength ≥ MPa |
Elongation ≥ % |
|
＜100mm |
485 |
345 |
21 |
|
100-125mm |
460 |
315 |
21 |
|
125-200mm |
435 |
290 |
21 |
|
Structural Shapes |
485 |
345 |
21 |
Supply Information
Specifications: Thickness 2-150mm, Width 1000-4200mm, Length 3000-18000mm (customizable)
Manufacturing Process: Hot rolled, controlled rolled, normalized, quenched & tempered, etc.
Surface Condition: Natural rust color, shot blasting anti-rust treatment, weather resistant coating, etc.
Standards: ASTM / ASME / EN / JIS, etc.
Delivery Time: Typically 7-15 working days
Performance and Advantages
Strong Atmospheric Corrosion Resistance: Service life 2–5 times that of ordinary carbon steel
High structural strength: Meets load-bearing requirements for bridges and buildings
Reduced maintenance: Can be used without coating or with extended coating intervals
Environmentally friendly: Reduced coating usage, lowering maintenance costs
Strong adaptability: Stable performance across various climatic conditions
Construction Applications
Bridge Structures: Used extensively in highway and railway bridges for primary load-bearing elements such as girders, beams, and support frameworks.
The plate corten steel sa709 offers enhanced corrosion resistance, reducing the need for protective coatings and lowering maintenance costs over the structure's lifespan.
Building Facades and Cladding: Due to its natural rust-colored protective patina and weather-resistant features, asme sa709 corten plate is a popular material for architectural facades and exterior cladding, providing both aesthetic appeal and structural protection.
High-Rise Steel Frameworks: Its high tensile and yield strength make it suitable for high-rise building frameworks, where strength and durability against weathering are critical.
Towers and Masts: The steel plate is used for communication towers, wind turbine towers, and other tall structures requiring excellent corrosion resistance without frequent maintenance.
Coastal and Marine Construction: SA709 Grade 50W performs well in harsh marine atmospheres, making it suitable for ports, docks, and seawall constructions where exposure to salt spray accelerates corrosion of traditional steels.
Outdoor Structural Elements: Including canopies, walkways, staircases, and landscaping structures, where long-term exposure to weather demands durable, low-maintenance materials.
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