Product Introduction
ASME SA709 Corten Sheet is a specialized structural-grade weathering steel sheet developed to meet the rigorous requirements of the ASME SA709 standard, commonly used in bridge construction and heavy infrastructure projects.
This material provides both high strength and enhanced atmospheric corrosion resistance, making it ideal for long-term outdoor performance without the need for protective paint systems.
Engineered for critical load-bearing applications, the SA709 corten sheet offers consistent mechanical properties and dependable durability across variable climates and environmental conditions.
Mechanical Performance
|
Property |
Value |
|
Yield Strength |
≥ 345 MPa |
|
Tensile Strength |
≥ 485 MPa |
|
Elongation |
≥ 18% |
|
Charpy Impact Toughness |
As per SA709 fracture-critical zones |
Chemical Composition Range
|
Element |
Content (%) |
|
C |
≤ 0.19 |
|
Mn |
0.75–1.35 |
|
Si |
0.15–0.50 |
|
P |
≤ 0.035 |
|
S |
≤ 0.045 |
|
Cu |
0.25–0.40 |
|
Cr |
0.40–0.65 |
|
Ni |
≤ 0.50 |
|
V |
≤ 0.10 |
Attributes
Bridge-Grade Structural Strength
Designed specifically for structural components in bridges, load-bearing columns, and trusses
Available in various grades under SA709, including Grade 50W and 100W for weathering performance
Built-In Weather Resistance
Developed with alloying elements such as copper, chromium, and nickel
Forms a stable oxide barrier that slows corrosion under cyclic wet-dry exposure
Eliminates or reduces the need for coating in many structural applications
Dimensional Stability
Tight thickness and flatness tolerances
Superior fabrication performance (cutting, welding, forming)
Compatible with Standard Fabrication
Weldable with conventional low-alloy procedures
Suitable for bolted or riveted structural systems
Advantages of SA709 Weathering Steel Sheet
✔ Standards-Compliant: Fully meets ASME SA709 standards, ensuring quality and structural integrity
✔ Reduced Maintenance: Natural weathering reduces painting cycles and lifecycle costs
✔ Long-Term Durability: Proven performance in bridges and critical infrastructure worldwide
✔ Optimized for Load-Bearing Systems: Balances weight savings with structural resilience
Applications
Highway and railway bridge decks
Structural frames in exposed environments
Pier platforms and load-bearing girders
Structural skins for long-span architecture
Infrastructure in marine, coastal, or industrial zones
In high-demand industrial settings, weathering steel offers strength, stability, and resistance to harsh conditions.
Gnee delivers tailored components for infrastructure and facility use in sectors such as power, transport, and utilities.
Typical applications include:
- Cable and pipe supports for towers and factories
- Access covers and drainage system lid
- Safety barriers and partitions for machinery
- Frames, base structures, and storage platforms
- Outdoor stairs, ladders, and walkways
- Our products meet international standards and are trusted in global industrial environments.
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