en 10025-3 s355n normalized structural steel plate

EN 10025-3 S355N Steel Plate supplier

What is EN 10025-3 S355N Steel?

EN 10025-3 S355N steel plate is a medium-strength, fine-grained structural steel designed for weldable applications in general construction and engineering. It complies with the European standard EN 10025-3, which specifies delivery conditions for normalized/normalized rolled weldable fine grain structural steels. The typical delivery condition is normalized or normalized rolled, ensuring a refined microstructure for enhanced toughness and consistency.

The designation "EN 10025-3 S355N" stands for:

• S: Structural steel.
• 355: Minimum yield strength of 355 MPa for thicknesses up to 16 mm.
• N: Normalized or normalized rolled heat treatment.

As a fine grain structural steel, EN 10025-3 S355N offers improved weldability, ductility, and impact resistance, making it suitable for a wide range of structural applications in moderate climates.

Explore our comprehensive range of EN 10025-3 normalized steel plates for various structural solutions.

What is the Chemical Composition of EN 10025-3 S355N Steel?

The chemical composition of EN 10025-3 S355N is carefully controlled to ensure a balance of strength, toughness, and weldability, with low carbon and alloy content to minimize welding challenges.

Below is a table detailing the ladle analysis (melt stage) and product analysis (finished plate) as per EN 10025-3:

The Carbon Equivalent (CEV) is calculated as CEV = C + Mn/6 + (Cr + Mo + V)/5 + (Ni + Cu)/15. For EN 10025-3 S355N, CEV is ≤0.43% (up to 63 mm thickness; ≤0.45% for thicker plates), ensuring excellent weldability with minimal risk of cold cracking.

Mechanical Properties of EN 10025-3 S355N

EN 10025-3 S355N provides robust mechanical properties, with a minimum yield strength of ≥355 MPa, tensile strength of 470-630 MPa, and elongation ≥22%. It achieves reliable impact toughness of ≥27 J at -20°C (Charpy V-notch, longitudinal).

Properties vary by thickness; refer to the table below:

These attributes make it suitable for moderate structural demands.

What is the Equivalent Grade of EN 10025-3 S355N?

EN 10025-3 S355N aligns with various international standards, though exact equivalence varies:

For enhanced cold performance, see EN 10025-3 S355NL normalized structural steel plate.

What is the Difference Between EN 10025-3 S355N and S355NL / S355M / S275N?

Key differences guide material selection:

• EN 10025-3 S355N vs S355NL: Both have 355 MPa yield, but S355NL ensures impact toughness at -50°C (vs -20°C for EN 10025-3 S355N), ideal for colder climates. Visit EN 10025-3 S355NL normalized structural steel plate.
• EN 10025-3 S355N vs S355M: S355M uses thermomechanical controlled processing (TMCP) for finer grain structure and cost-effective welding, while EN 10025-3 S355N’s normalization suits broader applications.
• EN 10025-3 S355N vs S275N: S355N offers higher yield (355 MPa vs 275 MPa) for stronger, lighter designs at a higher cost; S275N is more economical for lighter loads. See EN 10025-3 S275N normalized structural steel plate.

These factors impact cost, performance, and environmental suitability.

Welding and Heat Treatment of EN 10025-3 S355N

EN 10025-3 S355N’s low CEV ensures seamless welding via GMAW or SAW, following EN 1011-2 guidelines.

• Preheating: Not required for ≤20 mm; 100-150°C advised for thicker sections to prevent hydrogen-induced cracking.
• Post-Weld Heat Treatment (PWHT): Typically unnecessary; stress relief at 550-650°C for critical welds.

Recommended consumables:

• GMAW: ER70S-6 (AWS A5.18).
• SAW: EM12K flux with EH14 wire.

This supports high-quality, crack-free welds.

Applications of EN 10025-3 S355N Steel Plate

EN 10025-3 S355N is widely used in industries requiring dependable strength:

• Building Structures: Columns, beams, and trusses in commercial and industrial buildings.
• Bridges: Secondary components in moderate climates.
• Machinery and Equipment: Frames and bases for industrial tools.
• Wind Towers: Lower-stress components in temperate regions.

Selected for its balanced strength, -20°C toughness, and weldability, it aligns with Eurocode 3 for safe, efficient designs.

Explore related grades like EN 10025-3 S355N normalized structural steel plate or EN 10025-3 S275NL normalized structural steel plate.

Available Thickness, Width, and Supply Conditions

Gangsteel supplies EN 10025-3 S355N in versatile sizes:

• Thickness: 6–250 mm (custom options available).
• Width: 2000 / 2500 / 3000 mm standard.
• Length: Up to 12,000 mm.

Delivered hot-rolled and normalized, with EN 10204 3.1/3.2 certificates and optional UT testing (EN 10160). Primed surfaces available for corrosion resistance.

Why Buy EN 10025-3 S355N Steel from Gangsteel?

Gangsteel, a leading producer and exporter, offers premium EN 10025-3 S355N:

• Inventory: Extensive stock in China for rapid delivery.
• Lead Times: 7-30 days globally.
• Export Markets: Europe, Asia, Middle East, Americas.
• Testing: SGS/BV/TUV certified.

We provide cutting, welding, bending, mill certificates, and ABS/LR/BV/DNV approvals.

Contact us for EN 10025-3 S355N normalized structural steel plate.

FAQ

Is EN 10025-3 S355N steel good for welding?Yes; CEV ≤0.43% allows straightforward arc welding without special aids.

What temperature can EN 10025-3 S355N be used in?From -20°C to +500°C, with toughness certified at -20°C; use S355NL for colder conditions.

Does EN 10025-3 S355N require preheating when welding?Not for ≤20 mm; 100-150°C recommended for thicker plates.

Is EN 10025-3 S355N equivalent to ASTM A572?Comparable to A572 Grade 60 (yield ~415 MPa equivalent), but EN 10025-3 S355N’s normalization enhances toughness; not identical.

What is the maximum thickness for EN 10025-3 S355N?Up to 250 mm, with properties adjusted to maintain performance.

Can EN 10025-3 S355N be used in bridge construction?Yes; suitable for secondary elements in temperate zones due to strength and -20°C toughness.

What differs between EN 10025-3 S355N and EN 10025-2 S355JR?EN 10025-3 S355N is normalized fine-grain for -20°C, while S355JR is hot-rolled for ambient use without guaranteed low-temp properties.

How does EN 10025-3 S355N compare to Chinese Q345D?Q345D is similar in strength and -20°C performance, but EN 10025-3 S355N adheres to stricter EU standards for grain control and certification.

Is EN 10025-3 S355N suitable for heavy machinery?Yes; its strength and weldability make it ideal for equipment frames and supports in moderate environments.

Discover more options like EN 10025-3 S420N normalized structural steel plate or EN 10025-3 S460N normalized structural steel plate.