Hot Rolled A588 Grade C Weathering Steel Plate

A588 Grade C Weathering Steel Plate is a high-strength, low-alloy structural steel. The A588 Gr.C steel plate specification is primarily used for welding bridges and other structures. It ensures corrosion resistance to extend service life while also enabling weight reduction or enhanced durability.

This steel plate has a yield strength of approximately 345 MPa, a tensile strength of 485–620 MPa, and an elongation of ≥ 20%. Plate thickness can be customized to 6–25 mm based on engineering requirements.

The protective copper patina forming on its surface reduces corrosion rates to 0.02–0.03 mm/year, enabling a service life of 40–60 years in urban, coastal, and industrial environments.

Excellent atmospheric corrosion resistance:

In most environments, A588 Gr.C corten hot rolled steel plate exhibits significantly superior atmospheric corrosion resistance compared to carbon structural steels with or without copper content. Corrosion rates in urban or coastal environments typically range from 0.02–0.03 mm/year.

Mechanical Properties:

• Yield strength: ≥345 MPa

• Tensile strength: 485–620 MPa

• Elongation: ≥20%

• Plate Thickness: 6–25 mm, customizable per project requirements

Exposure Conditions:

Under appropriate atmospheric exposure, A588 Gr.C high strength steel sheet may be used bare (without coating).

A protective copper patina forms on the surface within 8–12 months, extending service life to 40–60 years.

A588 Grade C corten steel sheet is a high-strength, low-alloy weathering steel with a yield strength ≥345 MPa, tensile strength of 485–620 MPa, elongation ≥20%, and customizable thicknesses ranging from 6–25 mm. Its surface naturally develops a protective patina within 8–12 months, reducing corrosion rates to 0.02–0.03 mm/year and extending service life to 40–60 years.

In welded, bolted, and riveted structures, A588 Gr.C plate withstands sustained loads and vibration while maintaining structural integrity, minimizing coating and maintenance costs.

When used in steel frame and building structures, this steel adapts to urban, coastal, and industrial environments. Its corrosion resistance significantly outperforms ordinary carbon steel, ensuring long-term safety and reliability.

In bridge and pedestrian overpass projects, A588 Gr.C high strength weathering steel plates serve as main girders, deck girders, and connectors. They offer high load-bearing capacity with a typical service life of 40–60 years, while reducing coating and maintenance frequency.

For storage tanks and industrial vessels, this steel plate resists corrosion from salt spray and mild acidic gases. Plate thickness and dimensions can be customized to tank specifications, ensuring long-term durability for chemical storage, oil tanks, and similar facilities.

In exhaust systems, heavy-duty vehicles, and equipment construction, A588 Gr.C hot rolled steel plate withstands high temperatures, vibration, and heavy loads. It combines strength and durability, extending equipment lifespan while reducing maintenance frequency.

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