EN10025-3 S275 NL Normalized Steel Plates for Weldable Struc

EN10025-3 S275 NL Normalized Steel Plates for Weldable Structures

As a premier exporter and manufacturer of high-quality structural steel plates, Gangsteel specializes in producing EN 10025-3 compliant materials, including the versatile S275NL steel grade.

S275NL is a normalized fine-grain structural steel designed for welded constructions requiring enhanced toughness at low temperatures, down to -50°C.

Ideal for heavy-duty applications in bridges, cranes, and offshore structures, our S275NL plates are delivered in normalized or normalized rolled conditions to ensure superior weldability and impact resistance.

For a comprehensive overview of our en 10025 3 normalized steel plate offerings, explore our full range.

What is S275NL Steel?

S275NL steel, designated as 1.0491 under the European standard EN 10025-3, belongs to the family of weldable fine-grain steels. The "NL" suffix indicates its suitability for normalized delivery with a minimum impact energy of 27 Joules at -50°C in the longitudinal direction, making it perfect for cold climates and demanding environments. Compared to similar grades like en 10025 3 s275n normalized structural steel plate, S275NL offers improved low-temperature performance without compromising on strength.

Gangsteel produces S275NL plates in thicknesses up to 250 mm, with precise control over chemical composition to meet CEV limits for optimal weldability. Our plates are rigorously tested to comply with international standards, ensuring reliability for global projects.

Chemical Composition of S275NL Steel

The chemical makeup of S275NL is carefully balanced to provide excellent strength, ductility, and resistance to brittle fracture. Below is the product analysis for nominal thicknesses ≤ 100 mm, with a maximum Carbon Equivalent Value (CEV) of 0.40 (or up to 0.42 in some specifications).

*Note: For long products, P and S may be 0.005% higher. If N-binding elements are present, the Al minimum does not apply. Cu above 0.4% may affect hot forming.

This low carbon and controlled alloying ensure minimal risk of cracking during welding.

Mechanical Properties of S275NL Steel

S275NL exhibits robust mechanical characteristics, with properties varying by thickness to accommodate diverse fabrication needs. All values are for normalized (+N) condition.

Yield Strength (ReH, Minimum, MPa)

Tensile Strength (Rm, MPa)

Elongation (A, Minimum, %; Lo = 5.65 √So)

Charpy V-Notch Impact Energy (KV, Minimum Joules)

Longitudinal (+N)

Transverse (+N)

These properties position S275NL as a cost-effective choice for structures needing high toughness, outperforming standard S275JR in sub-zero conditions.

Applications of S275NL Steel Plates

S275NL is widely used in:

• Heavy Engineering: Cranes, earthmoving equipment, and load-bearing frameworks.
• Infrastructure: Bridges, viaducts, and offshore platforms where low-temperature ductility is critical.
• Construction: Welded structures in shipbuilding and pressure vessels.

For higher strength needs, consider upgrading to en 10025 3 s355nl normalized structural steel plate or en 10025 3 s420nl normalized structural steel plate.

Equivalent Grades to S275NL

Why Choose Gangsteel for S275NL Steel?

With state-of-the-art mills and a commitment to ISO-certified quality, Gangsteel delivers S275NL plates tailored to your specifications. Stocked in various sizes and ready for immediate export worldwide. For detailed pricing and availability, visit our en 10025 3 s275nl normalized structural steel plate product page or contact our sales team today.

Summary

EN 10025-3 S275NL normalized steel plates offer exceptional weldability and low-temperature toughness, making them a reliable choice for demanding structural applications. With a yield strength ranging from 205–275 MPa, controlled chemical composition, and superior impact resistance down to -50°C, S275NL from Gangsteel ensures durability in bridges, cranes, and offshore projects. Explore our range for customized solutions and competitive global supply.

FAQ

What is the difference between S275N and S275NL steel?

S275N provides impact testing down to -20°C, while S275NL extends this to -50°C for enhanced performance in colder environments. Both are normalized fine-grain steels under EN 10025-3, but S275NL is ideal for arctic or sub-zero conditions.

What are the maximum thicknesses available for S275NL plates?

Gangsteel supplies S275NL plates up to 250 mm thick, with mechanical properties adjusted for thicker sections to maintain structural integrity.

Is S275NL suitable for welding without preheating?

Yes, due to its low CEV (max 0.42), S275NL exhibits excellent weldability. Preheating is typically not required for thicknesses under 40 mm, but consult project specifications for optimal procedures.

What certifications does Gangsteel provide with S275NL plates?

All plates come with EN 10204 3.1 mill certificates, including chemical analysis, mechanical test results, and impact testing. We also offer third-party inspections like Lloyd's Register or DNV upon request.

Can S275NL be used in offshore structures?

Absolutely—its high toughness at low temperatures and corrosion resistance (with proper coatings) make it a preferred material for offshore platforms, as per EN 10025-3 standards.