S355ML Material EN 10025-4 Structural Steel Supplier

S355ML Material EN 10025-4 Structural Steel Supplier

Gangsteel – China's Largest Mill-Direct Supplier & Exporter of S355ML Material EN 10025-4 Structural Steel Plates

Gangsteel is the professional and reliable supplier for S355ML material EN 10025-4 structural steel plates. We maintain the biggest permanent stock of S355ML in Asia – over 5,000 tons ready at all times, covering thickness 6–200 mm, width 1500–4200 mm, length up to 18 meters. All plates are genuine TMCP (thermomechanical controlled process) produced by top Chinese mills with full European PED/CE approval.

We supply with original mill test certificates EN 10204-3.1/3.2, third-party inspection available (DNV, ABS, LR, BV, CCS, KR, TÜV, SGS), Z25/Z35 through-thickness quality in stock, 100 % ultrasonic testing EN 10160 S2/E2 standard.

Fast delivery worldwide in 3–7 days. Full processing services: plasma/oxy cutting, beveling, drilling, rolling, priming.

Explore our full range of en 10025 4 High Strength Structural Steel products.

What is S355ML Material EN 10025-4 Structural Steel?

S355ML is a thermomechanically rolled (TMCP) weldable fine-grain structural steel specified in EN 10025-4:2004 (current version 2019).

The designation breaks down as:

• S= structural steel
• 355= minimum yield strength 355 MPa (for thickness ≤ 16 mm)
• M= thermomechanical rolling (TMCP)
• L= improved low-temperature toughness (impact test at –50 °C)

S355ML material is specifically designed for high-strength applications where excellent toughness at low temperatures is required. The TMCP process – controlled hot rolling followed by accelerated cooling – produces a very fine-grained microstructure without separate normalizing heat treatment. This gives S355ML superior combination of strength, ductility, weldability, and low-temperature performance compared to conventional hot-rolled or normalized grades.

S355ML is the low-temperature version of S355M and the TMCP version of S355NL. It is the most popular grade in the entire EN 10025-4 standard because it offers the perfect balance between cost, strength, and –50 °C impact toughness.

Typical applications where S355ML material is mandatory:

• Offshore wind turbine foundations and transition pieces
• Arctic and sub-Arctic oil & gas platforms
• Jack-up rigs and floating production units
• Heavy mobile cranes and lifting equipment
• Cold-region bridges and infrastructure
• Penstocks and pressure pipelines in alpine areas

For a complete explanation of the grade designation, see our detailed article S355ML Meaning EN 10025-4 Structural Steel Supplier.

Chemical Composition – Ladle Analysis and Product Analysis

S355ML has very tight chemical control to ensure excellent weldability and consistent properties.

Ladle Analysis (maximum values unless range stated)

Product Analysis – Permitted deviations (EN 10025-1 Table 4)

Typical Gangsteel actual values are significantly better: C 0.09–0.12 %, CEV 0.34–0.37, P+S ≤ 0.030 %.

Full chemical breakdown: S355ML Chemical Composition EN 10025-4 Supplier

Mechanical Properties – Full Thickness Range up to 200 mm (Transverse)

• For t > 150 mm, minimum yield 285–295 MPa by mill agreement. Gangsteel guarantees 295 MPa up to 180 mm, 285 MPa to 200 mm.

Typical actual values from Gangsteel stock are 20–40 MPa above minimum across all thicknesses.

Hardness: 140–180 HBW Density: 7.85 g/cm³ Full mechanical tables: S355ML Mechanical Properties EN 10025-4 Plate Supplier

Available Specifications & Testing

• Thickness: 6–200 mm (20–120 mm most popular in stock)
• Width: 1500–4200 mm
• Length: up to 18 000 mm
• Z-quality: Z25 standard, Z35 large stock
• NDT: 100 % ultrasonic testing EN 10160 S2/E2 (S3/E3 optional)
• Surface: shot-blasted + primer or mill finish
• Certification: EN 10204-3.1/3.2, PED, CPR, all major class approvals

Comparison Within EN 10025-4 Family

S355ML is the best-selling grade worldwide – 60–70 % of all EN 10025-4 volume – because it offers the optimal combination of strength, low-temperature toughness, weldability, and price.

See detailed comparison: S355M vs S355ML EN 10025-4 Steel Plate Comparison Supplier

Why Choose Gangsteel for S355ML Material

• Largest S355ML stock in Asia (5,000+ tons ready)
• Factory-direct price – 60–120 USD/ton lower than traders
• Full processing capability (cutting, beveling, drilling, rolling, priming)
• Z35 quality always in stock
• Immediate delivery worldwide
• Exported to 90+ countries with perfect documentation
• One-stop service – stock → processing → shipping

FAQ – Quick Answers

Q1: S355ML vs S355M difference?A: Only impact test temperature. S355ML = –50 °C (≥27 J), S355M = –20 °C (≥40 J). Strength, chemistry, weldability identical.

Q2: Preheating required?A: No preheat up to 80 mm thickness. >80 mm: 75–100 °C max.

Q3: Z35 availability?A: Yes – very large stock of S355ML + Z35 ready for immediate delivery.

Q4: Density and hardness?A: Density 7.85 g/cm³, hardness 140–180 HBW.

Q5: NDT standard?A: 100 % UT EN 10160 S2/E2 included. S3/E3, MT, PT on request.

Q6: Maximum thickness?A: Up to 200 mm with full properties and certification.

Q7: Delivery time?A: Stock material: 3–7 days worldwide. Processed plates: 5–10 days.

Contact Gangsteel Today

Need S355ML material? Contact us now for best price and fastest delivery.

Email: admin@gangsteel.com WhatsApp/WeChat/Mobile: +86 135 9887 9167 Website: https://gangsteel.net/

Gangsteel – Real Factory. Real Stock. Real Fast Delivery.

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