S275M Welding EN 10025-4 Fine Grain Plate Supplier

S275M Welding EN 10025-4 Fine Grain Plate Supplier

Gangsteel – China's Largest Mill-Direct Supplier & Exporter of S275M Welding EN 10025-4 Fine Grain Plates

Gangsteel is the professional supplier you can trust for S275M welding EN 10025-4 fine grain plates, with the largest permanent stock 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.

What is S275M Welding EN 10025-4 Fine Grain Plate?

S275M is a thermomechanically rolled (TMCP) weldable fine grain structural steel specified in EN 10025-4:2004 (current version 2019).

The designation “S275M” means:

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

The fine grain structure is achieved through controlled microalloying (Nb, V, Ti) and the TMCP process, resulting in ASTM grain size 8–11. This is what gives S275M its excellent combination of high strength, superior weldability, and good low-temperature toughness (≥40 J at –20 °C).

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)

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)

*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 S275M Fine Grain Material

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 Fine Grain Material

• Largest S275M fine grain 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 makes S275M "fine grain"?

A: The combination of low carbon, Al + Nb + V + Ti microalloying, and TMCP process produces ASTM grain size 8–11, which is the definition of "fine grain" and the reason for its superior toughness and weldability.

Q2: S275M vs S275ML difference?

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.

Q3: 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.

Q4: 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.

Q5: 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.

Q6: 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.

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 S275M fine grain 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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