What Is S275NL Steel EN 10025-3 Grade and Applications

What Is S275NL Steel? EN 10025-3 Grade Overview and Applications

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? EN 10025-3 Grade Overview

S275NL steel, designated as 1.0491 under the European standard EN 10025-3, is part of the weldable fine-grain structural steels family. The "S" denotes structural steel, "275" indicates a minimum yield strength of 275 MPa, and "NL" specifies normalized delivery with longitudinal impact energy of at least 27 Joules at -50°C. This grade is optimized for environments demanding high toughness and ductility, distinguishing it from milder variants like en 10025 3 s275n normalized structural steel plate.

Under EN 10025-3, S275NL is supplied in thicknesses from 3 mm to 250 mm, with controlled alloying for low carbon equivalent (CEV ≤ 0.42) to enhance weldability. Gangsteel ensures plates meet all inspection requirements, including ultrasonic testing and Charpy impact verification, for reliable performance in global projects.

Chemical Composition of S275NL Steel

The composition supports fine-grain refinement and low-temperature properties, with values for nominal thicknesses ≤ 100 mm.

*Note: Low P and S levels improve toughness; CEV ensures weld crack resistance.

Mechanical Properties of S275NL Steel

All properties are for normalized (+N) condition, with values varying by thickness.

*Notes: Elongation per Lo = 5.65 √So; transverse impact is 16 J minimum at -50°C.

Applications of S275NL Steel

S275NL is selected for its balance of strength and low-temperature toughness in demanding sectors:

• Infrastructure: Bridges, viaducts, and highways exposed to cold weather.
• Heavy Machinery: Cranes, excavators, and load-bearing frames requiring weldability.
• Offshore and Marine: Platforms, ship hulls, and wind turbine bases for impact resistance.
• Construction: Welded buildings and pressure vessels in arctic regions.

For elevated demands, upgrade to en 10025 3 s355nl normalized structural steel plate or en 10025 3 s420nl normalized structural steel plate.

Why Choose Gangsteel for S275NL Steel?

Gangsteel delivers EN 10025-3 S275NL plates with ISO-certified quality, custom sizes, and worldwide export. Visit our en 10025 3 s275nl normalized structural steel plate page for specs and quotes.

Summary

S275NL steel under EN 10025-3 is a fine-grain, normalized structural grade with 275 MPa yield strength and -50°C toughness, ideal for welded applications in bridges, cranes, and offshore structures. Its controlled chemistry and mechanics ensure durability in harsh conditions, making it a go-to for global engineering projects.

FAQ

What does the "NL" in S275NL stand for?

"NL" indicates normalized delivery with longitudinal impact testing at -50°C (27 J minimum), per EN 10025-3, for superior low-temperature performance.

What is the maximum thickness for S275NL plates?

Up to 250 mm, with yield strength adjusted for thicker sections to maintain structural integrity.

Is S275NL suitable for welding?

Yes, its low CEV (≤ 0.42) allows welding without preheating for thicknesses ≤ 40 mm; follow EN 1011-2 guidelines.

What are common equivalents to S275NL?

DIN StE 285, ASTM A572 Gr. 50, and JIS SM490B offer similar properties for international use.

Where is S275NL primarily applied?

In cold-climate infrastructure like bridges and offshore platforms, where toughness and weldability are essential.