ASTM A572 Grade 55|A572 Gr.55|A572Gr55 steel plate

ASTM A572 Grade 55 Steel Plate Supplier | Chemical Composition, Properties, Equivalent

ASTM A572 Grade 55 steel plate is a robust high-strength low-alloy structural steel, designed for enhanced performance in construction, bridges, and heavy equipment. As a top ASTM A572 STEEL PLATE supplier in China, Gangsteel provides high-quality A572 Gr 55 steel plate that meets international standards like ASME, EN, JIS, and DIN.

This high strength low alloy steel offers excellent yield strength, good weldability, and resistance to atmospheric corrosion, making it ideal for structural frames in energy and infrastructure projects. Whether for astm a572 gr 55 applications or higher demands, our plates ensure cost-effective solutions with large stock availability and fast global delivery.

1. What is ASTM A572 Gr.55 steel material?

ASTM A572 Gr.55 is a high strength low alloy steel (HSLA steel) formulated for structural applications requiring higher yield strength than Grade 50, while maintaining excellent ductility and formability. Alloyed with elements such as columbium, vanadium, and sometimes copper, it provides superior resistance to fatigue and impact. Commonly used in A572 Grade 55 bridge steel plate for long-span structures and A572 structural steel in high-rise buildings, this grade excels in environments with moderate corrosion exposure. As a versatile carbon steel plate, it's perfect for welded or bolted assemblies in construction machinery, transmission towers, and offshore platforms.

Gangsteel's A572 Gr 55 steel plate is produced to precise ASTM standards, offering reliable quality for diverse international projects, from seismic-resistant designs to heavy-load equipment.

2. ASTM A572 Gr.55 Chemical Composition - Key Elements and Limits

The chemical composition of ASTM A572 Gr.55 is optimized for strength and corrosion resistance, with tight controls on impurities. Below is a detailed table of its composition:

This ASTM A572 Grade 55 chemical composition ensures low carbon equivalent for easy welding, while alloying elements like vanadium enhance grain refinement and toughness. Compared to lower grades, it allows for better performance in thicker sections without increased brittleness.

3. ASTM A572 Gr.55 Mechanical Properties - Strength and Toughness Details

ASTM A572 Gr.55 delivers superior mechanical properties, making it suitable for high-stress environments. The following table outlines its key characteristics:

These ASTM A572 Grade 55 mechanical properties provide a balance of high yield for load-bearing and sufficient elongation for forming, outperforming standard carbon steels in fatigue-prone applications like bridges and cranes.

4. Equivalent Grades - ASTM A572 Gr.55 International Comparisons

ASTM A572 Gr.55 aligns with several global standards, facilitating easy substitution in multinational projects. The table below compares common equivalents:

These ASTM A572 Grade 55 equivalent grades ensure compatibility across regions, with EN S355J2 offering similar cold-weather performance for European specifications.

5. ASTM A572 Gr.55 vs ASTM A36 Steel - Strength and Application Differences

When comparing ASTM A572 Gr.55 vs A36 steel, the former's higher yield strength (380 MPa vs 250 MPa) and alloy content stand out. A36 is a basic carbon steel suitable for general fabrication, but lacks the columbium and vanadium in Gr.55, which improve corrosion resistance and weldability. Gr.55 allows for thinner sections in designs, reducing weight and costs in bridges or machinery, while A36 is more economical for low-load uses. Gangsteel recommends ASTM A572 Gr.55 vs A36 steel for projects requiring enhanced durability and efficiency.

6. Applications - ASTM A572 Grade 55 Steel Plate Uses

The versatility of ASTM A572 Grade 55 steel plate extends to various industries. In bridge construction, it's used as A572 Grade 55 bridge steel plate for beams and supports in long-span designs. High-rise buildings benefit from its role as A572 structural steel in seismic frames and columns. Construction machinery, such as excavators and loaders, relies on its impact resistance. Additional applications include power transmission towers, railcar components, and agricultural equipment frames. As a dependable structural steel plate supplier, Gangsteel supplies Gr.55 plates compliant with ASME, EN, JIS, and DIN for diverse structural needs.

7. Specification - ASTM A572 Gr.55 Steel Plate Dimensions

Gangsteel offers ASTM A572 Gr.55 steel plate in flexible specifications to suit your requirements. The table below details our standard offerings:

These dimensions provide versatility for custom projects, with options for precise cutting and edge preparation.

8. Available Sizes and Supply Conditions - Customization Options

Gangsteel stocks ASTM A572 Gr.55 steel plate in a wide array of sizes for immediate availability. Thicknesses range from 6mm to 200mm, widths from 1500mm to 3200mm, and lengths up to 18000mm. Supply conditions include as-rolled for cost savings, normalized for improved toughness, TMCP for fine grain structure, and quenched/tempered for maximum strength.

Our large inventory ensures quick turnaround for global shipments. As an ASTM A572 Grade 55 steel supplier China, we offer additional services like beveling, ultrasonic testing, and custom fabrication. Inquire about ASTM A572 Gr.55 steel plate sizes tailored to your project, with competitive pricing per ton.

9. FAQ – Frequently Asked Questions about ASTM A572 Gr.55

1. What is ASTM A572 Grade 55 steel?

ASTM A572 Grade 55 steel is a high-strength low-alloy structural steel known for its balance of strength and weldability in construction applications.

2. What is the difference between A572 Gr.55 and A36?

A572 Gr.55 vs A36 steel highlights Gr.55's higher yield strength and alloy enhancements for better performance in structural environments.

3. What are the mechanical properties of ASTM A572 Grade 55?

The ASTM A572 Grade 55 mechanical properties include a minimum yield of 380 MPa and tensile strength of 485 MPa.

4. What are the equivalent materials of ASTM A572 Gr.55?

Common equivalents include EN S355J2, DIN St52-3N, and GB Q345C.

5. Where can I buy ASTM A572 Gr.55 steel plates in China?

Gangsteel is a leading ASTM A572 Grade 55 steel supplier China, offering stock-ready plates for purchase.

6. What is the price of A572 Grade 55 steel per ton?

A572 Gr.55 steel price per ton varies by quantity; contact Gangsteel for current quotes and bulk discounts.

10. Why Buy ASTM A572 Gr.55 from GANGSTEEL?

Gangsteel is your ideal ASTM A572 Gr.55 steel supplier China, with extensive export experience to Asia, the Middle East, Europe, and South America. We offer large stock for 7-15 day delivery, mill-direct competitive pricing, and MTC EN 10204 3.1 certification. Additional services include machining, testing, and customization. Explore related grades: A572 Grade 42 STEEL PLATE, A572 Grade 50 STEEL PLATE, A572 Grade 60 STEEL PLATE, A572 Grade 65 STEEL PLATE. Buy A572 Gr.55 steel plate from China for unmatched quality and service.