S355NL 1.0546 Steel Specifications

S355NL 1.0546 Steel Specifications

S355NL 1.0546, also referred to as 1.0546 S355NL, is a high-strength, low-alloy structural steel under EN 10025-3, identified by its material number 1.0546. This normalized or normalized rolled fine-grain steel is renowned for its excellent toughness, weldability, and performance in low-temperature environments, making it ideal for applications like offshore platforms and cold-climate bridges.

This article details the specifications of S355NL 1.0546, including chemical composition, mechanical properties, delivery conditions, and applications, addressing core keywords s355nl 1.0546 and 1.0546 s355nl. For more details, visit our EN 10025-3 S355NL normalized structural steel plate.

What is S355NL 1.0546 Steel?

S355NL 1.0546 is a fine-grain structural steel under EN 10025-3, with the material number 1.0546 assigned per EN 10027-2 for identification in global trade. The designation breaks down as:

• S: Structural steel.
• 355: Minimum yield strength of 355 MPa for thicknesses ≤16 mm.
• NL: Normalized or normalized rolled, with impact toughness tested at -50°C.

The normalization process refines the microstructure, ensuring the 1.0546 S355NL steel’s suitability for demanding structural applications in cold environments.

Chemical Composition Specifications

The chemical composition of S355NL 1.0546 is tightly controlled to ensure strength, toughness, and weldability:

Key Elements:

• Low Carbon (C): ≤0.18% ensures toughness and weldability.
• Aluminum (Al), Niobium (Nb): Promote fine-grain structure for enhanced toughness.
• Low Sulfur (S) and Phosphorus (P): Minimize inclusions for improved performance.

Carbon Equivalent (CEV): ≤0.43% (≤63 mm), calculated as CEV = C + Mn/6 + (Cr + Mo + V)/5 + (Ni + Cu)/15, supports weldability for 1.0546 S355NL.

Mechanical Properties Specifications

The mechanical properties of S355NL 1.0546 are specified to ensure high strength and low-temperature performance:

• Yield Strength: ≥355 MPa (≤16 mm) for load-bearing capacity.
• Tensile Strength: 470-630 MPa for durability.
• Elongation: ≥22% for ductility.
• Impact Toughness: ≥27 J at -50°C for cold-climate reliability.

Delivery Condition Specifications

• Condition: Normalized (+N) or normalized rolled, ensuring uniform microstructure.
• Thickness Range: 6–250 mm.
• Widths: 2000, 2500, 3000 mm (standard).
• Lengths: Up to 12,000 mm.
• Surface: Hot-rolled, optional priming for corrosion resistance.
• Certifications: EN 10204 3.1/3.2 certificates, UT testing (EN 10160 optional).

Welding and Heat Treatment

S355NL 1.0546 is highly weldable:

• Welding: Compatible with GMAW and SAW per EN 1011-2. Preheating (100-150°C) for >20 mm; no preheat for thinner plates.
• PWHT: Optional at 550-650°C for critical welds.
• Consumables: ER70S-6 (GMAW), EM12K flux with EH14 wire (SAW).

The fine-grain structure of 1.0546 S355NL minimizes weld imperfections.

Applications

S355NL 1.0546 is used in:

• Offshore Platforms: Fatigue-resistant in cold marine environments.
• Wind Turbine Towers: Supports sub-zero loads.
• Bridges and Cranes: Load-bearing in northern climates.
• Pressure Vessels: Low-temperature storage systems.

Its specifications align with Eurocode 3 standards. Explore related grades like EN 10025-3 S420NL normalized structural steel plate.

Equivalent Grades

See EN 10025-3 S355N normalized structural steel plate.

Why Choose Gangsteel?

Gangsteel supplies S355NL 1.0546:

• Inventory: Extensive stock in China.
• Sizes: Thickness 6–250 mm, widths 2000/2500/3000 mm, lengths up to 12,000 mm.
• Delivery: 7-30 days globally.
• Certifications: EN 10204 3.1/3.2, UT testing (EN 10160), ABS/LR/BV/DNV approvals.
• Processing: Cutting, welding, bending.

Contact us for EN 10025-3 S355NL normalized structural steel plate.

FAQ

What is S355NL 1.0546?
S355NL 1.0546 is a fine-grain structural steel under EN 10025-3, with material number 1.0546, offering 355 MPa yield, 470-630 MPa tensile strength, and -50°C toughness for cold-climate structures.

What are the specifications of 1.0546 S355NL?
1.0546 S355NL specs include CEV ≤0.43%, yield ≥355 MPa, tensile 470-630 MPa, ≥27 J at -50°C, thickness 6-250 mm, and normalized condition for offshore and bridge applications.

Is S355NL 1.0546 weldable?
Yes, S355NL 1.0546 is highly weldable with CEV ≤0.43%, supporting GMAW/SAW with minimal preheating (100-150°C for >20 mm), ideal for complex welded structures.

What are applications of 1.0546 S355NL?
1.0546 S355NL is used in offshore platforms, wind towers, bridges, and pressure vessels in cold climates, leveraging its -50°C toughness and high strength.

How does S355NL 1.0546 compare to S355J2?
S355NL 1.0546 is normalized, tested at -50°C for cold climates; S355J2 is hot-rolled, tested at -20°C, suited for temperate regions. See EN 10025-3 S355N normalized structural steel plate.

What certifications are provided for S355NL 1.0546?
S355NL 1.0546 comes with EN 10204 3.1/3.2 certificates, UT testing (EN 10160), and ABS/LR/BV/DNV approvals, ensuring compliance for global projects.