ASME SA709 Grade 50W Carbon and Low-alloy High-strength Steel Plate Specification

ASME SA709 Grade 50W/SA709 Gr.50W high tensile plates are also named as ASME SA709 Grade 50W/SA709 Gr.50W weathering steel plates, which is famous for its property in atmosphere corrosion resistance.

SA709 Grade 50W steel plates are widely used in construction machinery, mining machinery, truck, bridges, pressure vessels, etc., and structural building.

High Tensile Strength: These plates have a minimum yield strength of 345 MPa and tensile strength ranging from 485–655 MPa, making them capable of supporting heavy structural loads.

Superior Toughness: With good impact resistance even at low temperatures, they ensure structural safety under dynamic or extreme conditions.

Excellent Weldability: The steel plates can be easily welded for complex assemblies without compromising mechanical performance, reducing fabrication time and costs.

Durability: Designed for long-term use in outdoor or harsh environments, the plates exhibit resistance to fatigue and corrosion, suitable for both civil and industrial structures.

These plates have a minimum yield strength of 345 MPa and a tensile strength ranging from 485 to 655 MPa, with an elongation of ≥20%. They also maintain impact toughness ≥27 J at 20°C, ensuring structural safety even under low-temperature or dynamic load conditions.

Bridge Construction: Girders, deck plates, and trusses, capable of withstanding heavy traffic loads.

Industrial Machinery: Frames and structural components for cranes, construction machinery, and heavy equipment.

Building Structures: Columns, beams, and support frameworks where strength and weldability are critical.

Marine and Offshore Facilities: Port structures, shipyards, and offshore platforms benefiting from the steel's durability and toughness.