Details about ASTM A588/A588M Grade A Carbon and Low-alloy High-strength Steel Coil

Chemical Composition and Mechanical Properties of ASTM A588/A588M Grade A Steel

Chemical Composition:

Element Percentage
Carbon (C) ≤0.20%
Silicon (Si) 0.15 – 0.50%
Manganese (Mn) 0.75 – 1.35%
Phosphorus (P) ≤0.040%
Sulfur (S) ≤0.050%
Copper (Cu) 0.20 – 0.40%
Chromium (Cr) 0.40 – 0.70%
Nickel (Ni) ≤0.50%

Mechanical Properties:

Property Value
Yield Strength (min) 345 MPa (50 ksi)
Tensile Strength (min) 485 MPa (70 ksi)
Elongation in 8″ (min) 21%

Applications and Industries Utilizing ASTM A588 Grade A Steel

ASTM A588 Grade A steel is used in various applications due to its high strength and corrosion resistance:

  1. Bridges: Commonly used in the construction of bridges due to its durability.
  2. Buildings: Structural components in buildings exposed to harsh weather conditions.
  3. Railway Cars: Used in manufacturing railway cars where strength is crucial.
  4. Heavy Equipment: Components in heavy machinery that require high strength.
  5. Marine Applications: Suitable for structures exposed to saltwater environments.

Corrosion Resistance and Weathering Characteristics of A588 Grade A

  • Corrosion Resistance: Exhibits excellent resistance to atmospheric corrosion, forming a protective patina that reduces further corrosion.
  • Weathering Characteristics: Designed for outdoor use, it withstands rain, snow, humidity, and other environmental factors without significant deterioration.

Manufacturing Processes for A588 Grade A Steel Plates and Coils

A588 Grade A steel is typically manufactured through the following processes:

  • Hot Rolling: The steel is rolled at high temperatures to achieve desired thickness and shape.
  • Cold Rolling: Further processing improves surface finish and dimensional accuracy.

Available Dimensions:

Thickness Range Width Range Length Range
5 – 150 mm 900 – 4800 mm 3000 – 12000 mm

Welding and Fabrication Considerations for A588 Grade A Steel

  • Weldability: Generally good weldability; preheating may be required for thicker sections.
  • Post-Weld Treatment: Post-weld heat treatment is often unnecessary but can enhance properties depending on application requirements.

Comparison of A588 Grade A with Other Weather-Resistant Steel Grades

Grade Yield Strength (MPa) Tensile Strength (MPa) Typical Applications
A588 Gr.A ≥345 ≥485 Bridges, buildings, heavy equipment
A588 Gr.B ≥345 ≥485 Similar applications as Gr.A
A572 ≥345 ≥450 General structural applications

At HL Steel Company, we provide high-quality ASTM A588/A588M Grade A carbon and low-alloy high-strength steel coils tailored for various industrial applications, ensuring optimal performance and reliability in demanding environments.

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