Product Overview
SA588 Grade C weathering steel plate is a high-strength, low-alloy structural steel specified under ASME SA588 / SA588M standards. It is designed to resist atmospheric corrosion by forming a self-protecting rust-like patina, reducing the need for painting and long-term maintenance.
This steel plate is widely applied in bridge construction, shipping containers, tanks, vessels, railway carriages, and other structural engineering projects. Its combination of high strength, toughness, and corrosion resistance ensures reliability even in harsh outdoor environments.
Specifications
| Property | Value |
|---|---|
| Steel Grade | SA588GrC |
| Standard | ASME SA588 / SA588M |
| Thickness | 4mm – 450mm |
| Width | 1000mm – 4200mm |
| Length | 3000mm – 18000mm |
| Production Method | Hot Rolled |
| Delivery Condition | Normalized (N), Quenched & Tempered (Q+T), TMCP (Thermal-Mechanical Control Process), or as required |
Chemical Composition (wt%)
| Element | Max / Range |
|---|---|
| C (Carbon) | 0.20 |
| Mn (Manganese) | 0.75 – 1.35 |
| P (Phosphorus) | 0.04 |
| S (Sulfur) | 0.05 |
| Si (Silicon) | 0.15 – 0.50 |
| Ni (Nickel) | 0.50 |
| Cr (Chromium) | 0.40 – 0.70 |
| Cu (Copper) | 0.20 – 0.40 |
| V (Vanadium) | 0.01 – 0.10 |
Controlled alloying provides excellent corrosion resistance, high strength, and good weldability without compromising toughness.
Mechanical Properties
| Property | SA588 Grade C Plate |
|---|---|
| Tensile Strength | 400 – 650 MPa |
| Yield Strength | ≥ 250 MPa |
| Elongation | ≥ 20% (2 in / 50mm gauge) |
| Impact Test Temperature | +20 °C, 0 °C, −20 °C |
The steel plate meets high-strength and low-temperature toughness requirements, making it suitable for outdoor and load-bearing applications.
Surface Treatment Options
Shot blasting
Painting or coated
Customized finishes available
These treatments further enhance durability and aesthetics for structural or decorative applications.
Applications
Bridge Construction: Girders, beams, and supporting structures
Shipping Containers & Storage Tanks: Long-term atmospheric corrosion resistance
Vessels & Industrial Equipment: Durable and high-strength load-bearing applications
Railway Carriages & Machinery: Structural steel requiring toughness and durability
Other Construction Projects: Highway structures, frameworks, and outdoor installations
Why Choose Gnee Steel Plate?
Certified Quality: Manufactured according to ASME SA588 / SA588M standards
Competitive Price: Cost-effective solutions with large-scale production
Reliable Supply: 5,000 – 10,000 MT per month, depending on thickness and size
Technical Support: Guidance on specifications, welding, and application design
For SA588 Grade C weathering steel plate prices or technical consultation, contact Gnee Steel directly for expert assistance and fast quotations.
