Gnee Steel proudly offers SA588 Grade A (GrA) high-strength low-alloy structural steel plates, designed for superior performance in a wide range of structural and industrial applications.

These plates are primarily supplied in the bare (uncoated) condition, providing flexibility for painting, coating, or direct atmospheric exposure.
Production Specifications:
Thickness: 4 mm – 400 mm
Width: 1000 mm – 4000 mm
Length: 4000 mm – 12,000 mm
Monthly Production Capacity: 10,000 metric tons
Manufacturing Process: Hot Rolled (HR)
Heat Treatment Options:
Normalized (N)
Quenched and Tempered (Q&T)
Hydrogen-Induced Cracking Resistant (HIC)
Impact-tested (Charpy)
Chemical Composition (%):
| Grade / Material | C | Mn | Si | P | S |
|---|---|---|---|---|---|
| SA588 Grade A / GrA | ≤0.19 | 0.80–1.25 | 0.30–0.65 | ≤0.04 | ≤0.05 |
Mechanical Properties:
| Grade / Material | Tensile Strength (MPa / Ksi) | Yield Strength (MPa / Ksi) | Elongation (%) |
|---|---|---|---|
| SA588 Grade A / GrA | 485 / 70 | 345 / 60 | 21 |
Impact Test: Optional, can be performed at varying temperatures depending on project requirements.
Key Advantages of Gnee SA588 GrA Steel Plates:
High Strength & Toughness: Excellent combination of tensile and yield strength ensures reliability in heavy-duty structures.
Corrosion Resistance: Superior atmospheric corrosion resistance reduces maintenance costs in outdoor applications.
Versatile Applications: Suitable for bridges, structural frames, pressure vessels, and other load-bearing constructions.
Flexible Heat Treatment: Can be supplied normalized, quenched & tempered, or impact tested to meet diverse engineering standards.
Precision Manufacturing: Tight dimensional tolerances and consistent mechanical properties ensure structural integrity.
Gnee Steel SA588 Grade A plates deliver high performance, long service life, and low maintenance, making them an ideal choice for demanding structural and industrial applications worldwide.








