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A572 Plate
A572 Plate
ASTM A572 is a high-strength, low-alloy mild steel sheet widely utilized in structural applications. Renowned for its excellent strength-to-weight ratio, A572 steel is suitable for construction, bridge building, heavy machinery, and wind turbine foundations. It contains alloying elements that improve strength and durability while maintaining a lightweight profile. Of the five available grades—42, 50, 55, 60, and 65—ASTM A572 Grade 50 is the most frequently used due to its optimal balance of weldability and formability.
Zhaojian Steel offers a wide range of ASTM A572 mild steel sheets in standard and heavy thicknesses. All products meet certification standards and can be cut to size with fast delivery and competitive prices.
Product Specifications
| Standard | ASTM A572 |
| Material Type | High-Strength Low-Alloy (HSLA) Steel |
| Main Grades | Grade 42, Grade 50, Grade 55, Grade 60, Grade 65 |
| Thickness (mm) | 4.75 – 100 mm (3/16” – 4”) |
| Width (mm) | 1219 – 3048 mm (48” – 120”) |
| Length (mm) | Up to 12,192 mm (Up to 480”) |
| Surface Finish | Hot Rolled, As Rolled, or Pickled & Oiled (P&O) |
| Delivery Condition | As Rolled or Normalized |
| Element | Grade 50 |
| Carbon (C) | ≤ 0.23% |
| Manganese (Mn) | ≤ 1.35% |
| Phosphorus (P) | ≤ 0.04% |
| Sulfur (S) | ≤ 0.05% |
| Vanadium (V) or Columbium (Nb) | ≤ 0.06% (if used) |
| Grade | Yield Strength (ksi) | Tensile Strength (ksi) | Elongation in 8” (%) |
| Grade 42 | ≥ 42 ksi | 60 – 80 ksi | ≥ 20% |
| Grade 50 | ≥ 50 ksi | 65 – 95 ksi | ≥ 18% |
| Grade 55 | ≥ 55 ksi | 70 – 100 ksi | ≥ 17% |
| Grade 60 | ≥ 60 ksi | 75 – 105 ksi | ≥ 16% |
| Grade 65 | ≥ 65 ksi | 80 – 110 ksi | ≥ 15% |
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More Details
Applications
Columns, Beams, Frames
Load-Bearing Components
Structural Parts
FAQ
What Makes A572 a Preferred Low-Carbon Plate for Structural Projects?
A572 steel plate is classified as a low-carbon plate, combining a reduced carbon content with added alloying elements for improved strength and weldability. This balance makes it ideal for load-bearing applications in construction, bridges, and heavy equipment. Unlike traditional carbon steel, A572’s low carbon composition lowers the risk of brittleness while enabling easy forming and fabrication—making it a top choice for engineers and builders seeking dependable performance and structural efficiency.
What is the most common grade of A572?
The most commonly used grade is ASTM A572 Grade 50. It provides an excellent balance of strength, weldability, and formability, making it suitable for both standard and demanding structural applications.
Does Zhaojian Steel provide custom cutting for A572 steel?
Yes. At Zhaojian Steel, we provide custom cutting services for ASTM A572 mild steel sheets. Whether you require standard or heavy thicknesses, we guarantee fast delivery and full compliance with ASTM certification standards.
