S355ML vs S355MC EN 10025-4 Coil Plate Supplier

 

 

S355ML vs S355MC EN 10025-4 Coil Plate Supplier

Gangsteel – China's Leading Mill-Direct Supplier & Exporter of S355ML vs S355MC EN 10025-4 Coil and Plate Structural Steel

Gangsteel is the professional supplier you can trust for both S355ML plates (EN 10025-4) and S355MC coil/plates (EN 10149-2), with the largest combined stock in Asia – over 8,000 tons ready for immediate delivery in thickness 6–200 mm (plates) or 1.5–20 mm (coils), width 1500–4200 mm, length/coil weight up to 18 m/30 tons. All material is genuine TMCP produced by top mills (HBIS, Shougang) with full European approvals and third-party inspection (DNV, ABS, LR, BV, CCS, KR, TÜV, SGS).

We supply both grades with Z35 through-thickness quality in stock for plates, 100 % UT EN 10160 S2/E2 standard, and full documentation.

 

S355ML vs S355MC – Different Standards, Different Applications

S355ML and S355MC have the same nominal yield strength of 355 MPa, but they are completely different materials from different standards with different purposes:

Property	S355ML (EN 10025-4)	S355MC (EN 10149-2)	Winner & Reason
Standard	EN 10025-4 (hot finished structural steels)	EN 10149-2 (hot rolled flat products for cold forming)	-
Delivery Form	Plates (mainly)	Coils and plates (mainly coils)	S355MC for coil-intensive production
Process	Thermomechanical rolled (TMCP)	Thermomechanical rolled (TMCP)	Same
Primary Application	Welded structural components, offshore, bridges, low-temp	Cold forming (bending, roll forming, pressing)	Different markets
Low-Temperature Toughness	Guaranteed –50 °C (≥27 J)	No low-temp guarantee (standard –20 °C or optional)	S355ML for cold environments
Weldability	Excellent (CEV ≤0.39)	Good (CEV ≤0.39) but not designed for heavy welding	S355ML superior for welded structures
Formability (bending)	Good	Excellent (guaranteed r/t values)	S355MC for cold forming
Through-Thickness (Z-quality)	Standard option (Z35 common)	Rarely required	S355ML for critical welds
Typical Use	Offshore wind towers, Arctic structures, heavy cranes	Truck chassis, crane booms, agricultural machinery	Different
Price (November 2025)	Higher	Lower	S355MC cheaper

Bottom line: These two grades are not interchangeable.

• Choose S355ML when you need welded structural components with low-temperature toughness (offshore wind, Arctic, bridges).
• Choose S355MC when you need high formability for cold bending/roll forming (truck frames, crane arms, trailers).

Many customers confuse the two because both are TMCP 355 MPa steels, but they serve completely different markets.

Gangsteel supplies both grades with full certification and can help you choose the correct one for your application.

 

Chemical Composition – Very Similar but Different Limits

Element	S355ML (EN 10025-4) max %	S355MC (EN 10149-2) max %	Difference & Impact
C	0.14	0.12	Lower C in S355MC for better formability
Si	0.50	0.50	Same
Mn	1.60	1.60	Same
P	0.025	0.025	Same
S	0.020	0.015	Lower S in S355MC for better bending
Nb	0.05	0.09	Higher Nb in S355MC for grain control in forming
V	0.10	0.20	Higher V in S355MC for strength in thin gauges
Ti	0.05	0.15	Higher Ti in S355MC for formability
Al min	0.020	0.015	Similar
CEV max	0.39	0.39	Same

The main difference is in microalloying levels – S355MC has higher Nb+V+Ti limits to achieve better formability in cold bending.

Full chemical data for S355ML: S355ML Chemical Composition EN 10025-4 Supplier

 

Mechanical Properties – Same Strength, Different Focus

Property	S355ML (EN 10025-4)	S355MC (EN 10149-2)	Notes
Yield Strength ReH (MPa)	355 (≤16 mm) → 275–295 (>100 mm)	355 (≤3 mm) → 315 (>8 mm, coil typical)	S355ML better in thick plates
Tensile Strength Rm (MPa)	470–630	470–620	Similar
Elongation A80/A5 (%)	≥22	≥20 (A80 for t≤3 mm)	S355ML better ductility
Impact Toughness	≥27 J at –50 °C (standard)	No mandatory low-temp (optional –20 °C)	S355ML vastly superior
Bending Test	Not mandatory	Guaranteed r/t values (excellent formability)	S355MC for cold forming

S355ML is designed for welded structures with low-temp toughness. S355MC is designed for cold forming with guaranteed bending performance.

 

Weldability – S355ML Is Better for Welding

S355ML has lower CEV and is specifically designed for welding (including high heat input SAW). S355MC is optimized for cold forming, not heavy welding – HAZ softening can occur with high heat input.

Applications – Completely Different Markets

Application	Recommended Grade	Reason
Offshore wind towers	S355ML	Low-temp toughness, Z35, heavy welding
Truck chassis, trailers	S355MC	Excellent cold formability, lighter weight
Crane booms	S355MC	Bending for complex shapes
Arctic structures	S355ML	–50 °C impact mandatory
Bridges (welded)	S355ML	Better HAZ properties
Cold-formed sections	S355MC	Guaranteed bending values

Why Choose Gangsteel for S355ML and S355MC Plates/Coils

• Largest stock of both grades in Asia (8,000+ tons combined)
• Factory-direct price – 60–120 USD/ton lower than traders
• Full processing capability (cutting, beveling, drilling, rolling, priming)
• Z35 quality in stock for S355ML
• Immediate delivery worldwide
• Exported to 90+ countries with perfect documentation
• One-stop service – stock → processing → shipping

 

FAQ – Quick Answers

Q1: Can I use S355MC instead of S355ML to save money?A: No – they are for different applications. S355MC has no low-temperature guarantee and is not designed for heavy welding.

Q2: Can I use S355ML for cold forming?A: Yes, but S355MC is better and cheaper for cold forming applications.

Q3: Which is better for offshore wind?A: S355ML – low-temp toughness and Z35 are mandatory.

Q4: Price difference?A: S355MC is 80–150 USD/ton cheaper than S355ML, but not interchangeable.

Q5: Do you supply S355MC in plates or only coils?A: We supply S355MC in both coils and cut-to-length plates.

Q6: Do you have both grades in stock?A: Yes – very large stock of both S355ML plates and S355MC coils/plates ready.

Q7: Delivery time?A: Stock material 3–7 days worldwide.

 

Contact Gangsteel Today

Need S355ML or S355MC plates/coils? Contact us for quotation within 2 hours.

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

Gangsteel – Your Expert for Both Structural and Cold-Forming 355 MPa Grades.

 

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