Product Introduction
The ASTM A588 Grade A is a U.S. standard high-strength weathering structural steel plate (a588 weathering steel plate, also known as a588 corten steel plate).
During the rolling process, alloying elements such as Cu, P, Cr, Ni, and V are added, forming a dense protective oxide layer on the steel surface.
This layer effectively blocks moisture and corrosive media from penetrating, significantly improving the atmospheric corrosion resistance of the steel.
This a588 corten steel sheet not only offers exceptional corrosion resistance but can also be used in an unpainted condition for long-term exposure, eliminating the need for coating maintenance and making it suitable for service in harsh environments.
Product Features
Outstanding Weather Resistance – The atmospheric corrosion resistance is far superior to that of ordinary carbon steels (such as A36 and A572-50), and in most environments, it can be used without painting.
High Strength Performance – Minimum yield strength of 50 ksi (340 MPa) and minimum tensile strength of 70 ksi (480 MPa), suitable for heavy-duty structural applications.
Excellent Workability – Superior weldability, machinability, and formability; ideal for manufacturing bolted, riveted, and welded structural components.
High-Temperature Resistance – Maintains mechanical properties even in high-temperature and heat-intensive environments.
Good Ductility & Toughness – Can be stretched, bent, and rolled into various shapes to meet diverse engineering design needs.
Low Maintenance Cost – In most applications, there is no need for regular coating maintenance, ensuring high long-term cost-effectiveness.
Chemical Composition (%)
|
Grade |
C |
Si |
Mn |
P |
S |
Cr |
V |
Ni |
Cu |
|
A588 Gr A |
≤0.19 |
0.30–0.65 |
0.80–1.25 |
≤0.04 |
≤0.05 |
0.40–0.65 |
0.02–0.10 |
≤0.40 |
0.25–0.50 |
Mechanical Properties
|
Thickness Range |
Yield Strength (MPa) |
Tensile Strength (MPa) |
|
0–100 mm |
≥340 |
≥480 |
|
102–127 mm |
≥320 |
≥460 |
|
127–203 mm |
≥290 |
≥430 |
Applications
A588 Gr A plate is widely used in structural engineering requiring corrosion resistance and high strength, including:
1. Bridge Engineering – Bridge structures, decks, and support systems
2. Vehicle Manufacturing – Containers, freight cars, and railway vehicles
3. Construction – High-rise buildings, curtain walls, and structural components
4. Energy & Towers – Transmission towers, communication towers, and wind turbine towers
5. Port & Marine Facilities – Offshore engineering, port machinery
6. Landscape & Decoration – Sculptures, outdoor landscape structures
The ASTM A588 corten plate combines high strength, corrosion resistance, excellent workability, and low maintenance.
It is especially suitable for structural applications exposed to the atmosphere for long periods.
Whether in transportation, construction, or landscape design, it offers exceptional durability and a unique rusted appearance, delivering both safety and aesthetic value.
At Gnee, we know how critical on-time delivery and quality consistency are. Our streamlined project management system ensures every order is traceable, transparent, and executed with precision from start to finish.
Our one-stop delivery service includes:
Clear production timeline and project planning
CNC machining with strict manual inspections
100% final inspection before shipping with factory reports
Comprehensive export logistics and document support
Ongoing installation guidance and after-sales support
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