What is Gnee SA588 Grade A Steel Plate?
Gnee SA588 Grade A steel plate is a high-strength, low-alloy weathering steel specifically designed for outdoor and structural applications. It is manufactured to meet international standards, ensuring high-quality intermediate steel with a minimum yield strength of 345 MPa.
Plates can be produced in thicknesses up to 200 mm, with widths ranging from 1500 mm to 4050 mm and lengths up to 15,000 mm.
Gnee SA588 Grade A steel plates are widely used in projects requiring corrosion resistance, structural reliability, and long-term durability, such as bridges, marine transportation, building facades, and tanks.
Grade and Specification
Item: Steel plate, steel sheet, mild steel sheet, carbon steel sheet
Standards: ASTM A588, A242
Material: Corten A, Corten B, S355J0WP, S355J0W, S355J2W, A588 Grade A/B/C, A242 Type 1, SA588 Grade A/B/C
Thickness: 6 mm – 200 mm
Width: 1500 mm – 4050 mm
Length: 3000 mm – 15,000 mm
Surface Treatment: Black painted, PE coated, galvanized, color coated, anti-rust varnished, anti-rust oiled, checkered
Packaging: Standard export package or customized as per transport requirements
Export Markets: Saudi Arabia, Kuwait, Qatar, Pakistan, UAE, Turkey, Kazakhstan, Greece, Singapore, Thailand, Indonesia, Vietnam, South Africa, South America, Brazil, India, Australia, Egypt
Chemical Properties
| Grade | C max | Si | Mn | P max | S max | Ni max | Nb | Cu | Cr | Mo | N | V |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| SA588 Gr A | 0.19 | 0.30–0.65 | 0.80–1.25 | 0.04 | 0.05 | 0.40 | – | 0.25–0.40 | 0.40–0.65 | – | 0.01 | 0.02–0.10 |
Carbon Equivalent Formula:
Ceq=C+Mn6+Cr+Mo+V5+Ni+Cu15%Ceq = C + \frac{Mn}{6} + \frac{Cr + Mo + V}{5} + \frac{Ni + Cu}{15} \% Ceq=C+6Mn+5Cr+Mo+V+15Ni+Cu%
Mechanical Properties
| Thickness | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) |
|---|---|---|---|
| ≤100 mm | 485 | 345 | 21 |
| 100–125 mm | 460 | 315 | 21 |
| 125–200 mm | 435 | 290 | 18 |
Equivalent Standards (International)
| Country | Standard | Equivalent Grade |
|---|---|---|
| Germany | DIN, WNr | WTSt 52-3 |
| France | AFNOR | WR 50 C |
| UK | BS | Fe 510 D2K1 |
| Italy | UNI | S355J2G1W |
| China | GB | – |
| Europe | EN | – |
| GOST | – |
Typical Applications
Gnee SA588 Gr A steel plates are widely used in projects that require high strength, corrosion resistance, and long-term durability:
Outdoor Sculptures & Architectural Facades: Withstand atmospheric corrosion rate <0.03 mm/year and maintain structural integrity for 20–50 years in exposed environments.
Marine Transportation & Shipbuilding: Tensile strength up to 485 MPa and yield strength up to 345 MPa ensure safe operation under heavy dynamic loads and saltwater exposure.
Tanks and Storage Containers: Plates up to 200 mm thick provide durability for high-pressure storage and industrial tanks.
Building & Infrastructure Projects: Suitable for bridges, high-rise buildings, and frameworks where elongation of 18–21% ensures flexibility under vibration and heavy loading.
Rail Wagons & Heavy Machinery: Maintains structural performance under repetitive stress, supporting loads up to 50–100 tons per section.
Packing & Shipping
Each order is packaged according to customer specifications, including wooden cases, beds, or custom arrangements to protect against mechanical damage during transport.
Gnee ensures all transportation documentation is complete, complying with international shipping standards (IMO/ISO/EN).
Site visits or consultations are conducted to determine volume, weight, and packaging requirements, ensuring safe handling of plates up to 15,000 mm length and 4050 mm width, with weights exceeding 50 tons per bundle.
Application Industries
Gnee SA588 Gr A steel plates are used across multiple industrial sectors, where high-performance steel is essential:
Fertilizers & Chemical Plants: Corrosion resistance in acidic/alkaline atmospheres, reducing maintenance intervals by 50%.
Aerospace & Nuclear Power: Plates meet strict mechanical and chemical specifications for critical structural components.
Oil & Gas, Refineries, Petrochemical Industry: Weathering steel reduces corrosion and maintenance, suitable for pressure vessels and pipelines.
Paper & Pulp Industry: High tensile strength and wear resistance improve longevity of processing equipment.
Heavy Industrial Equipment Manufacturing: Plates support loads over 100 tons, maintaining mechanical properties under continuous operation.
