en 10025 s355j2g3 material steel plates

en 10025 s355j2g3 material steel plates for sales

Gangsteel, a globally recognized leader in manufacturing and exporting structural steel plates, supplies high-quality EN 10025 S355J2G3 material steel plates, tailored for construction, bridges, and heavy machinery applications in industries such as infrastructure, shipbuilding, and offshore engineering.

EN 10025 S355J2G3 is a non-alloy structural steel grade from the older EN 10025 standard, offering high strength, weldability, and impact resistance. This article provides a comprehensive overview of S355J2G3 material steel plates, including chemical composition, mechanical properties, applications, and benefits, offering valuable insights for engineers, fabricators, and procurement specialists.

Introduction to EN 10025 S355J2G3 Material Steel Plates

EN 10025 S355J2G3 is a non-alloy structural steel grade specified in the older version of the European standard EN 10025 (now superseded by EN 10025-2), covering hot-rolled products for general structural purposes. The "S355" denotes a minimum yield strength of 355 MPa, "J2" indicates impact toughness of 27 J at -20°C, and "G3" refers to the delivery condition (normalized or normalized rolled). S355J2G3 is equivalent to S355J2+N in the updated EN 10025-2 standard, with similar properties but refined specifications.

Gangsteel produces S355J2G3 plates in compliance with the original EN 10025 requirements, ensuring traceability and quality certification for legacy projects or specific needs. For updated grades, explore EN 10025-2 S355J2 steel or EN 10025-2 S355JR+N. The standard also includes grades like EN 10025-2 S235JR steel, EN 10025-2 S235J0, EN 10025-2 S235J2 steel, EN 10025-2 S275JR, EN 10025-2 S275J0 steel, EN 10025-2 S275J2 steel, EN 10025-2 S355JR steel, EN 10025-2 S355K2 steel, and EN 10025-2 S450J0 steel. S355J2G3 stands out for its fine grain structure and enhanced low-temperature impact resistance, making it suitable for structural components exposed to dynamic loads.

Chemical Composition of EN 10025 S355J2G3 Material Steel Plates

The chemical composition of S355J2G3 is tightly controlled to achieve optimal mechanical properties while maintaining weldability and formability. The table below outlines the typical composition per EN 10025:

Key Notes:

• Carbon: Limited to 0.20% to ensure good weldability and prevent brittleness, critical for structural applications.
• Manganese: Up to 1.60% enhances strength and toughness without compromising ductility.
• Phosphorus and Sulfur: Low levels (0.035% max) improve impact resistance, especially at subzero temperatures (tested at -20°C for J2).
• Silicon and Copper: Contribute to atmospheric corrosion resistance, making S355J2G3 suitable for outdoor structures.

Gangsteel’s S355J2G3 plates undergo stringent chemical analysis to meet EN 10025 requirements, with options for additional testing such as ultrasonic inspection.

Mechanical Properties of EN 10025 S355J2G3 Material Steel Plates

S355J2G3 offers excellent mechanical properties, making it versatile for structural engineering. The table below summarizes its key properties per EN 10025 (for plates up to 16 mm thickness):

Highlights:

• Yield Strength: Minimum 355 MPa ensures structural stability under heavy loads, ideal for bridges and buildings.
• Tensile Strength: The 490–630 MPa range provides robustness for dynamic applications.
• Elongation: 22% ductility supports forming and welding without cracking.
• Impact Toughness: 27 J at -20°C ensures performance in cold climates, similar to updated grades like S355J2+N.

Compared to lower grades like EN 10025-2 S275JR (yield 275 MPa) or EN 10025-2 S235JR (yield 235 MPa), S355J2G3 offers higher strength, allowing for thinner plates and weight savings in designs.

Thickness Tolerance of EN 10025 S355J2G3 Material Steel Plates

Thickness tolerance for S355J2G3 plates is governed by EN 10029, which specifies tolerances for hot-rolled plates 3 mm thick or above. For S355J2G3 (non-alloy structural steel with ReH ≥ 360 N/mm²), the default is Class A, unless otherwise specified. The table below summarizes EN 10029 Class A thickness tolerances:

Key Notes:

• Class A: Standard tolerance for non-alloy steels; tighter classes (B, C, D) are available for precision applications.
• Measurement: Tolerances apply outside ground areas; for plates with trimmed edges, tolerances are measured at least 100 mm from the edge.
• Customization: Gangsteel offers plates with special tolerances upon request, ensuring compliance with EN 10029 for S355J2G3.

These tolerances ensure dimensional accuracy for structural applications, reducing fabrication issues.

Equivalent Material of EN 10025 S355J2G3 Material Steel Plates

S355J2G3 has several equivalent materials in international standards, allowing for global sourcing and substitution. The table below details equivalent grades by country/standard:

Key Notes:

• ASTM A572 Gr 50: Closest US equivalent, with yield strength of 345 MPa (slightly lower than 355 MPa), but similar tensile properties.
• DIN ST52-3N: Offers equivalent low-temperature toughness, widely used in Europe.
• JIS SM490YA: Matches for hot-rolled structural steel, with good weldability.
• GB Q345D: Chinese equivalent, suitable for cold-forming and impact testing at -20°C.
• Selection Tip: Equivalents may vary slightly in chemical limits; verify with specific project requirements.

For more on equivalents, refer to Gangsteel’s ASME SA516 GR 70 Equivalent Grade guide.

Benefits of EN 10025 S355J2G3 Material Steel Plates

S355J2G3 stands out in the EN 10025 family for its balanced properties, offering several benefits:

1. High Strength-to-Weight Ratio: With a yield strength of 355 MPa, it enables lighter structures without sacrificing load-bearing capacity, reducing material costs in bridges and high-rise buildings.
2. Superior Low-Temperature Toughness: Tested at -20°C, S355J2G3 performs reliably in cold environments, outperforming EN 10025-2 S355J0 and similar to EN 10025-2 S355K2 steel.
3. Excellent Weldability: Low carbon equivalent (CEV ≈ 0.45) allows welding without preheating in many cases, facilitating efficient fabrication for large structures.
4. Atmospheric Corrosion Resistance: Additions of silicon and copper provide better resistance to weathering, making it suitable for outdoor applications like offshore platforms.
5. Cost-Effectiveness: Offers higher strength than EN 10025-2 S275J2 steel or EN 10025-2 S235J2 steel, allowing for material savings while maintaining performance.
6. Compliance and Certification: Meets EN 10025 and BS EN 10025-2 material grade requirements, with Gangsteel providing CE marking and EN 10204 3.1/3.2 certificates.

Weldability and Fabrication of EN 10025 S355J2G3 Material Steel Plates

S355J2G3 exhibits excellent weldability due to its low carbon equivalent, compatible with standard processes like SMAW, GTAW, and SAW. Key considerations:

• Preheat: Minimal or no preheating required for plates up to 25 mm, reducing fabrication time.
• Post-Weld Heat Treatment (PWHT): Not typically needed, but recommended for thicker plates (>40 mm) to relieve stresses.
• Filler Materials: Use low-alloy fillers matching the strength of S355J2G3, such as E7018 or ER70S-6.
• Fabrication: High ductility (22% elongation) supports bending, rolling, and forming for complex structural components.

Gangsteel supplies S355J2G3 in normalized conditions, enhancing grain refinement for improved fabrication performance.

Applications of EN 10025 S355J2G3 Material Steel Plates

S355J2G3 is versatile and widely used in:

• Construction: For bridges, buildings, and stadiums, where high strength and low-temperature toughness are required.
• Offshore Engineering: In platforms and wind turbines, leveraging its corrosion resistance and impact toughness.
• Heavy Machinery: For cranes, excavators, and mining equipment, where durability under dynamic loads is critical.
• Shipbuilding: In hulls and superstructures, benefiting from its weldability and strength.
• Energy Sector: For pipelines and storage tanks, similar to updated grades like S355J2+N.

Gangsteel’s S355J2G3 plates are available in thicknesses from 6–300 mm, with options for cut-to-size and cladding for specialized applications.

Why Choose Gangsteel for EN 10025 S355J2G3 Material Steel Plates?

Gangsteel is a global leader in supplying EN 10025 S355J2G3 plates, offering:

• Certified Quality: Plates undergo ultrasonic testing, Charpy impact tests at -20°C, and chemical analysis to meet EN 10025 standards.
• Customization: Available in thicknesses from 6–300 mm, with options for normalization, cut-to-size, and beveling for efficient fabrication.
• Global Supply: Competitive pricing and reliable delivery from China to worldwide markets, with stock in key ports for fast turnaround.
• Technical Support: Expert guidance on selecting S355J2G3 versus other grades like EN 10025-2 S355JR+N or EN 10025-2 S275J2 steel.

Gangsteel Solution for EN 10025 S355J2G3 Material Steel Plates

EN 10025 S355J2G3 material steel plates offer exceptional strength, weldability, and low-temperature toughness, making them ideal for construction, offshore, and heavy machinery applications. Gangsteel’s high-quality S355J2G3 plates ensure reliability and compliance with EN 10025 standards. For equivalent standards, explore our ASME SA516 GR 70 Equivalent Grade guide.

FAQ about EN 10025 S355J2G3 Material Steel Plates

What is the difference between S355J2 and S355J2G3?
S355J2 is the updated grade in EN 10025-2 with similar properties, while S355J2G3 is from the older EN 10025 standard. The "G3" indicates normalized delivery, equivalent to S355J2+N in the new standard.

What is G3 in S355J2G3?
The "G3" in S355J2G3 refers to the delivery condition, indicating normalized or normalized rolled steel, which refines the grain structure for improved toughness.

Is S355J2G3 retired from EN 10025?
Yes, S355J2G3 has been superseded by EN 10025-2, where it is now equivalent to S355J2+N. However, it is still referenced in legacy projects.

What is the correct denomination for S355-type steel now?
The current standard is EN 10025-2, with S355J2+N as the direct equivalent to S355J2G3 for normalized structural steel.

What is S355J2G3 used for?
S355J2G3 is used in construction, bridges, offshore platforms, and heavy machinery due to its high strength and low-temperature toughness.

What is the chemical composition of S355J2G3?
S355J2G3 has a maximum carbon content of 0.20%, manganese up to 1.60%, and low phosphorus/sulfur levels for enhanced toughness, as detailed in the composition table above.

How does S355J2G3 compare to S355J2G4?
S355J2G4 has similar properties but with additional requirements for fine grain structure, offering slightly better toughness; both are superseded by EN 10025-2 grades.

What are the mechanical properties of S355J2G3?
S355J2G3 has a minimum yield strength of 355 MPa, tensile strength of 490–630 MPa, and impact toughness of 27 J at -20°C, as summarized in the properties table.

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