ASTM SA709 Grade 50W Corten Steel Plate

In large-scale infrastructure projects, material performance is not just a specification—it’s a promise. SA709 Grade 50W is one of those steels that engineers rely on when designing bridges, overpasses, and structural components exposed to the harshest environmental conditions.

This low-alloy, high-strength weathering steel doesn’t just meet expectations—it exceeds them. Developed for critical structural use, SA709 50W offers both superior mechanical strength and enhanced atmospheric corrosion resistance, making it the preferred choice for long-term outdoor applications.

Built for the Elements

What sets SA709 Grade 50W apart is its ability to form a protective oxide layer, or patina, when exposed to the elements. This rust-colored barrier doesn’t just look natural—it actively protects the steel from further corrosion, even in industrial or marine atmospheres. Over time, the need for painting or maintenance is greatly reduced.

Ideal for Modern Infrastructure

SA709 Grade 50W is not just a material; it’s a solution for challenges that demand strength, longevity, and sustainability. It is widely used in:

• Highway and railway bridges

• Load-bearing structures in exposed environments

• Pedestrian walkways and overpasses

• Weathering steel architectural accents

• Structural elements in coastal or humid regions

Performance Highlights

• Minimum Yield Strength: 50 ksi (345 MPa)

• Excellent Weldability and Formability

• Low Maintenance Lifecycle

• ASTM A709/A709M Certified

• Compatible with other W-grade structural steels

Available Options

We provide SA709 50W plates in various sizes and thicknesses, tailored for different project needs. All materials are supplied with full mill test certificates, inspection reports, and can be processed according to customer specifications (cutting, drilling, beveling, and surface treatment).

Why Choose Our SA709 Grade 50W?

We understand infrastructure isn’t just built for today—it’s built for decades. With consistent mechanical quality, on-time delivery, and professional technical support, our SA709 Grade 50W steel plates help you meet the highest standards of safety, durability, and efficiency.

Let your projects stand the test of time—with the strength of weathering steel.