EN 10025-4 S275M High Strength Plate Supplier

 

 

 

EN 10025-4 S275M High Strength Plate Supplier

Gangsteel – China's Leading Mill-Direct Supplier & Exporter of EN 10025-4 S275M High Strength Plates

Gangsteel maintains the largest permanent stock of EN 10025-4 S275M high strength plates in Asia – over 5,000 tons always ready in 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 (HBIS, Shougang, Nanjing Steel) with full European approvals (PED 2014/68/EU, CPR 305/2011).

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

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

Explore our complete en 10025 4 High Strength Structural Steel series for all grades, including the popular low-temperature grade en 10025 4 s275ml steel plate and en 10025 4 s275m steel plate, standard-temperature en 10025 4 s355m steel plate, mid-range en 10025 4 s355ml steel plate and en 10025 4 s420ml steel plate, higher-strength en 10025 4 s460m steel plate, and top-end en 10025 4 s460ml steel plate.

 

What is EN 10025-4 S275M High Strength Plate?

EN 10025-4 S275M is a thermomechanically rolled (TMCP) weldable fine-grain high-strength structural steel with:

• Minimum yield strength 275 MPa
• Excellent toughness ≥ 40 J at –20 °C (longitudinal)
• Very low CEV ≤ 0.38 → outstanding weldability (no preheat up to 100 mm)
• Fine grain structure (ASTM 8–11)

The designation “S275M” means:

• S= structural steel
• 275= minimum yield strength 275 MPa (transverse, thickness ≤ 16 mm)
• M= thermomechanical rolling (TMCP delivery condition)

S275M is the entry-level high-strength grade in the EN 10025-4 family, perfectly balancing cost, strength, and weldability when service temperature is above –20 °C.

 

Chemical Composition – Ladle Analysis (max % unless noted)

Element	C	Si	Mn	P	S	Nb	V	Al min	Ti	Cr	Ni	Mo	Cu	N	CEV max
S275M	0.14	0.50	1.50	0.030	0.025	0.05	0.10	0.020	0.05	0.30	0.30	0.10	0.55	0.015	0.38

Typical Gangsteel actual values: C 0.09–0.12 %, CEV 0.32–0.36 → excellent weldability without preheating up to 100 mm thickness.

 

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

Thickness (mm)	ReH min (MPa)	Rm (MPa)	A5 min (%)	KV min (J) at –20 °C longitudinal
≤ 16	275	370–530	24	40
>16 ≤ 40	265	370–530	24	40
>40 ≤ 63	255	370–530	24	40
>63 ≤ 80	245	370–530	24	40
>80 ≤ 100	235	370–530	24	40
>100 ≤ 120	235	360–520	24	40
>120 ≤ 150	225	360–520	24	40
>150 ≤ 200	215–225*	360–520	24	40

*Gangsteel guarantees higher values in thick plates by agreement.

Hardness: 130–170 HBW Density: 7.85 g/cm³

 

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

 

Applications of EN 10025-4 S275M Plates

S275M is widely used when the service temperature is above –20 °C:

• Light structural frames
• Onshore wind turbine towers
• Heavy machinery bases
• Bridge components
• General fabrication

When the temperature drops below –20 °C, the low-temperature version S275ML is required.

 

Why Choose Gangsteel for S275M Plates

• Largest S275M 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

Summary

S275M EN 10025-4 is a TMCP weldable fine-grain structural steel with 275 MPa yield strength and ≥40 J impact at –20 °C, offering an excellent balance of strength, weldability, and cost for applications above –20 °C. Gangsteel stocks over 5,000 tons of S275M with full certification and fast delivery, making it the reliable choice for light structures, onshore wind, and general fabrication.

 

FAQ – Detailed Answers

Q1: What is the difference between S275M and S275ML?

A: The only difference is the impact test temperature. S275M is tested at –20 °C with minimum 40 J (longitudinal), while S275ML is tested at –50 °C with minimum 27 J. Yield strength, tensile strength, elongation, chemical composition, and weldability are exactly the same. Choose S275M when service temperature is above –20 °C; choose S275ML when below –20 °C.

Q2: Is preheating required when welding S275M?

A: No preheating is required up to 100 mm thickness thanks to the very low CEV (typically 0.32–0.36 actual). For thicknesses over 100 mm or highly restrained joints, a modest preheat of 75–100 °C is sufficient. This is a major advantage over many other structural steels.

Q3: Do you have Z35 quality in stock for S275M?

A: Yes – we keep very large stock of S275M + Z35 (reduction of area ≥35 % per EN 10164 Class 3), especially in 20–120 mm thickness, ready for immediate delivery. Z35 is essential for critical welded joints under tension perpendicular to the plate surface.

Q4: What is the density and hardness of S275M?

A: Density is 7.85 g/cm³ (7850 kg/m³), hardness is 130–170 HBW (typical 140–160 HBW in our stock). These values are consistent across the entire thickness range.

Q5: What NDT do you provide as standard?

A: 100 % ultrasonic testing to EN 10160 S2/E2 is included with every plate. We can upgrade to S3/E3, magnetic particle (MT), or penetrant testing (PT) on request at no extra charge for reasonable quantities.

Q6: What is the maximum thickness you can supply for S275M?

A: Up to 200 mm with full properties and certification. We guarantee minimum yield of 225 MPa up to 180 mm and 215 MPa to 200 mm – significantly better than the standard requirement.

Q7: How fast can you deliver to Europe or USA?

A: From ready stock: 7–12 days to Rotterdam, Antwerp, Houston, or Los Angeles. We have regular consolidation containers and can offer air freight for urgent small quantities (<10 tons) in 48–72 hours.

Contact Gangsteel Today

Need EN 10025-4 S275M high strength plates? 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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