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A588 Grade A

ASTM A588 Grade A is a high-strength, low-alloy weathering steel designed for structural applications, offering excellent strength, weldability, and enhanced resistance to atmospheric corrosion.
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mproved Athmospheric Corrosion Resistance Structural Steel / Weathering Steel. ASTM A588 Grade A steel is a high-strength, low-alloy structural steel commonly used in construction and other heavy-duty applications. It is known for its exceptional corrosion resistance and ability to withstand harsh environmental conditions. The steel is primarily composed of iron, with small amounts of copper, chromium, and nickel, which enhance its resistance to atmospheric corrosion. ASTM A588 Grade A steel is often used in outdoor structures such as bridges, buildings, and transmission towers, where its durability and weathering properties make it a reliable choice. Its superior strength and resistance to corrosion make it suitable for a wide range of demanding applications, providing long-lasting performance and structural integrity.
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Typical specification data

Technical reference

Final chemical, mechanical properties, dimensions and tolerances are confirmed against the governing specification and purchase order.

Chemical Properties
% Carbon Silicon Manganese Phosphorus Sulfur Nickel Chromium Copper Vanadium
min. - 0.03 0.80 - - - 0.40 0.25 0.02
max. 0.19 0.65 1.25 0.03 0.05 0.40 0.65 0.40 0.10
Mechanical Properties
- Tensile Strength Yield Point Elongation
min. 70 ksi [483 MPa] 50 ksi [345 MPa] 21%

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