The properties of SA588 Grade A High-Strength Low-Alloy Structural Steel Plates

Nov 17, 2025 Leave a message

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.

 

 SA588 Grade A

 

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.

 

Contact now

 

info-503-469