EN 10025-4 High Strength Structural Steel Plate

EN 10025-4 High Strength Structural Steel Plate

Gangsteel – China's Premier Mill-Direct Manufacturer and Largest Stockist of en 10025 4 High Strength Structural Steel

As a leading exporter from China, Gangsteel specializes in EN 10025-4 thermomechanically rolled (TMCP) weldable fine-grain structural steel plates, maintaining over 15,000 tons of ready stock year-round. Our inventory fully covers all EN 10025-4 grades—S275M, S275ML, S355M, S355ML, S420M, S420ML, S460M, and S460ML—in thicknesses from 6 to 200 mm, widths up to 4200 mm, and lengths extending to 18 meters.

Produced exclusively by top-tier Chinese mills with comprehensive European certifications (PED 2014/68/EU and CPR 305/2011), every plate ships with original EN 10204-3.1 or 3.2 mill test certificates. Third-party inspections by TÜV, DNV-GL, Lloyd’s Register, ABS, Bureau Veritas, CCS, RINA, or KR are standard, ensuring compliance for global projects.

Summary

EN 10025-4 defines high-strength, fine-grain structural steels processed via thermomechanical controlled rolling (TMCP) for superior weldability and toughness. These plates deliver yield strengths ranging from 275 to 460 MPa, with impact resistance down to -50°C in ML variants. Outperforming traditional normalized steels like S355J2 or S275J2, EN 10025-4 offers 10–30% greater strength, reduced carbon equivalent (CEV ≤ 0.43 for easy welding without preheating), and up to 25% lighter structures—ideal for demanding applications.

Globally, en 10025 4 s355ml steel plate and en 10025 4 s460ml steel plate lead demand, powering offshore wind farms, oil platforms, Arctic infrastructure, heavy cranes, and skyscrapers with unmatched reliability.

Chemical Composition (Ladle Analysis, % max unless noted)

The controlled alloying in EN 10025-4 ensures low CEV for hydrogen crack resistance and fine grain size for enhanced ductility.

*CEV calculated as C + Mn/6 + (Cr + Mo + V)/5 + (Ni + Cu)/15. Values apply to thicknesses ≤ 63 mm; consult mill for thicker plates.

Mechanical Properties (Transverse Testing, Thickness ≤ 63 mm)

EN 10025-4's TMCP process refines the microstructure for consistent performance across thicknesses, with progressive adjustments for >63 mm.

For detailed curves on thicker plates (e.g., yield drops to 400 MPa at 150 mm for S460ML), refer to individual grade specifications.

Equivalent International Grades

EN 10025-4 aligns closely with global standards, facilitating cross-certification in multinational projects.

Note: Equivalences are indicative; always verify per project spec (e.g., Z-direction testing for laminations).

Top Exported EN 10025-4 Grades: Real-Time Stock Insights

Based on monthly export volumes to Europe, Middle East, and Asia-Pacific, these grades dominate inquiries. Each en 10025 4 High Strength Structural Steel variant is backed by immediate availability and custom processing.

1. en 10025 4 s355ml steel plate – Global bestseller for -50°C toughness in wind energy.
2. en 10025 4 s460ml steel plate – High-strength leader for offshore oil & gas.
3. en 10025 4 s355m steel plate – Versatile workhorse for bridges and buildings.
4. en 10025 4 s460m steel plate – Preferred for heavy machinery upgrades.
5. en 10025 4 s420ml steel plate – Essential for jack-up platforms and cranes.
6. en 10025 4 s420m steel plate – Reliable for high-load industrial frames.
7. en 10025 4 s275ml steel plate – Go-to for cost-effective low-temp projects.
8. en 10025 4 s275m steel plate – Entry-level high-strength option.

Explore full specs, current pricing, and stock levels via our dedicated pages above.

Advantages of Partnering with Gangsteel for EN 10025-4

With decades of export expertise, Gangsteel delivers unmatched value:

• Massive Permanent Inventory: 15,000+ tons ensures 90% of orders ship in 3–7 days, minimizing project delays.
• Direct Mill Pricing: Save 40–100 USD/ton vs. intermediaries—factory contracts with HBIS, Angang, and Baosteel.
• Comprehensive Processing: In-house plasma/oxy cutting, edge beveling (K, V, X), hole drilling, plate rolling (up to 60 mm), bending, and weld-prep sandblasting/painting.
• Z-Direction Quality: Ex-stock Z25/Z35 on popular ML grades for delamination-free performance in tension-loaded welds.
• Project-Ready Compliance: Tailored to DNV-OS-B101 (offshore), Norsok M-120 (welding), Shell DEP 70/80, Total General Specification, Eurocode 3/EN 1090 EXC4, Petrobras N-1391, and Samsung Heavy Industries standards.
• Global Reach: Seamless logistics to 85+ countries, including Rotterdam (7–12 days), Singapore (10–15 days), and Houston (12–18 days).

Our plates have powered landmark projects like Ørsted wind farms, Equinor platforms, and ADNOC facilities—proving reliability under extreme conditions.

FAQ: Top Customer Queries on EN 10025-4

Q1: What's the key difference between M and ML grades?

A: Impact toughness only—M at -20°C (≥40J), ML at -50°C (≥27J). Ideal chemistry and strength are shared, but ML is essential for sub-zero environments like North Sea or Alaskan ops.

Q2: Is preheating required for welding EN 10025-4?

A: Rarely—low CEV (actual 0.35–0.42) permits cold welding up to 80–100 mm thick with standard electrodes (e.g., E7018). We supply CET/CEV data per heat for precise WPS.

Q3: Do you offer Z35 through-thickness plates?

A: Absolutely—large stocks of en 10025 4 s355ml steel plate and en 10025 4 s460ml steel plate certified to Z35 (≥35% reduction in area), critical for crane booms and jacket legs.

Q4: How does S355ML pricing compare to S355J2?

A: 80–150 USD/ton premium, offset by 15–25% material savings and 20–30% extended fatigue life, yielding net cost reductions in lifecycle analyses.

Q5: Can EN 10025-4 replace quenched-and-tempered steels?

A: For many yes—TMCP matches S460QL toughness/strength at lower cost and better weldability. For ultra-high yields (>690 MPa), see EN 10025-6.

Q6: What's your lead time for custom-cut plates?

A: Stock cuts ship same-day; full processing (e.g., bevel + prime) in 2–5 days. Urgent air freight available for critical path items.

Q7: Are your plates PED/CE marked for pressure equipment?

A: Yes—all comply with PED Category III/IV, with full traceability and NDT options (UT, MT) per EN 10228.

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Gangsteel—Empowering Your Projects with Proven EN 10025-4 Excellence. We stock it, you build it.