EN 10025-3 S275NL Steel Plate|Low Alloy Structural Steel Spe

EN 10025-3 S275NL Steel Plate | Low Alloy Structural Steel Specification

At Gangsteel, we’re thrilled to offer a detailed overview of EN 10025-3 S275NL steel plate, a low-alloy structural steel under EN 10025-3, designed for demanding applications in cold climates. Renowned for its fine-grain structure, 275 MPa yield strength, and -50°C toughness, S275NL is a top choice for structural projects like bridges, offshore platforms, and wind towers where low-temperature reliability is essential.

As part of the en 10025 3 normalized steel plate family, S275NL delivers robust performance. Gangsteel examines its chemical composition, mechanical properties, delivery conditions, and applications, comparing it to grades like en 10025 3 s355n normalized structural steel plate and en 10025 3 s420n normalized structural steel plate. For more details, contact us or visit our en 10025 3 s275nl normalized structural steel plate page.

What is EN 10025-3 S275NL Steel Plate?

EN 10025-3 S275NL steel plate is a low-alloy structural steel under EN 10025-3:2019, with a minimum yield strength of 275 MPa for plates up to 16 mm thick. Its designation, also known as material number 1.0490, breaks down as:

• S: Structural steel.
• 275: Minimum yield strength in MPa.
• NL: Normalized or normalized rolled, tested for impact toughness at -50°C.

The normalization process refines the grain structure, enhancing EN 10025-3 S275NL's strength, toughness, and weldability, making it ideal for cold climates. Compared to en 10025 3 s355n normalized structural steel plate, S275NL offers lower strength (275 MPa vs 355 MPa) but is suitable for lighter structural demands in low-temperature environments.

Chemical Composition of EN 10025-3 S275NL Steel Plate

Gangsteel ensures S275NL meets EN 10025-3 chemical composition standards for optimal performance:

Carbon Equivalent (CEV): Capped at 0.40% for plates up to 63 mm, calculated as CEV = C + Mn/6 + (Cr + Mo + V)/5 + (Ni + Cu)/15, ensuring weldability. S275NL’s lower carbon (0.18% max) and nitrogen (0.015%) enhance its low-temperature performance, similar to en 10025 3 s355n normalized structural steel plate.

Mechanical Properties of EN 10025-3 S275NL Steel Plate

Gangsteel guarantees S275NL’s mechanical properties excel in low-temperature applications:

• Yield Strength: Starts at 275 MPa for thin plates, suitable for low-to-moderate load structures.
• Tensile Strength: 410-530 MPa ensures durability under tensile forces.
• Elongation: ≥23% supports complex structural designs.
• Impact Toughness: ≥27 J at -50°C ensures reliability in cold climates, comparable to en 10025 3 s355n normalized structural steel plate.
• Hardness: Typically 130-170 HB (Brinell), balancing machinability and durability.
• Density: 7.85 g/cm³ (7850 kg/m³), standard for structural steels, aiding weight calculations.

Delivery Conditions and Specifications

Gangsteel provides EN 10025-3 S275NL with specifications outlined in EN 10025-3:

• Standard: EN 10025-3:2019.
• Condition: Normalized or normalized rolled for consistent microstructure.
• Thickness Range: 6–200 mm, with custom options up to 250 mm.
• Widths: 2000, 2500, or 3000 mm.
• Lengths: Up to 12,000 mm.
• Surface: Hot-rolled, with optional priming for corrosion protection.
• Certifications: EN 10204 3.1/3.2 certificates, ultrasonic testing (UT) per EN 10160, and approvals from ABS, LR, BV, or DNV.
• Z-Quality: Optional Z15, Z25, or Z35 per EN 10164 for through-thickness properties, reducing lamellar tearing risk, similar to en 10025 3 s275n normalized structural steel plate.
• Tolerances: Per EN 10029 for precision.

Welding and Heat Treatment

EN 10025-3 S275NL’s properties ensure excellent weldability with a low CEV (≤0.40%):

• Welding: Compatible with GMAW and SAW per EN 1011-2. Preheating typically not required for plates <20 mm; optional for thicker plates (100-150°C); post-weld heat treatment (PWHT) at 550-650°C optional.
• Consumables: ER70S-6 for GMAW, EM12K flux with EH14 wire for SAW.
• Weld Quality: Low sulfur (0.025%) and phosphorus (0.030%) ensure dependable welds, matching en 10025 3 s275n normalized structural steel plate.

Applications of EN 10025-3 S275NL Steel Plate

Gangsteel supplies S275NL for projects requiring low-temperature reliability:

• Bridges: Load-bearing components in cold climates, leveraging 275 MPa yield strength and -50°C toughness.
• Offshore Platforms: Structural parts in northern seas, benefiting from 410-530 MPa tensile strength.
• Wind Towers: Tower bases and sections in arctic regions, supported by ≥23% elongation for complex designs.
• Heavy Machinery: Durable components for cold-environment equipment, relying on fine-grain structure.

For higher strength, consider en 10025 3 s355n normalized structural steel plate.

Why Choose Gangsteel?

Gangsteel is your trusted source for EN 10025-3 S275NL:

• Inventory: Extensive stock in China for rapid delivery.
• Sizes: Thicknesses from 6–200 mm, widths up to 3000 mm, lengths up to 12,000 mm.
• Delivery: Ships globally in 7-30 days.
• Certifications: EN 10204 3.1/3.2, UT testing (EN 10160), and ABS/LR/BV/DNV approvals.
• Processing: Cutting, welding, and bending tailored to your project needs.

Contact us for en 10025 3 s275nl normalized structural steel plate.

FAQ

What is EN 10025-3 S275NL steel plate?
EN 10025-3 S275NL is a low-alloy structural steel with ≥275 MPa yield strength and -50°C toughness, ideal for cold-climate bridges and offshore platforms.

What are the key properties of EN 10025-3 S275NL?
EN 10025-3 S275NL offers ≥275 MPa yield strength, 410-530 MPa tensile strength, ≥23% elongation, and ≥27 J toughness at -50°C.

Is EN 10025-3 S275NL weldable?
Yes, EN 10025-3 S275NL’s CEV ≤0.40% enables easy welding with GMAW or SAW, often without preheating for thinner plates.

What applications use EN 10025-3 S275NL?
EN 10025-3 S275NL is used in bridges, offshore platforms, wind towers, and heavy machinery in cold climates, leveraging its low-temperature toughness.

How does EN 10025-3 S275NL compare to S355N?
EN 10025-3 S275NL has lower yield strength (275 MPa vs 355 MPa) but similar -50°C toughness, suitable for lighter loads in cold climates.

What certifications support EN 10025-3 S275NL?
Gangsteel provides EN 10025-3 S275NL with EN 10204 3.1/3.2, UT testing (EN 10160), and ABS/LR/BV/DNV approvals.

Summary

EN 10025-3 S275NL is a low-alloy structural steel with a minimum yield strength of 275 MPa, tensile strength of 410-530 MPa, and -50°C toughness (≥27 J), making it ideal for cold climates.

Its fine-grain structure and low CEV (≤0.40%) ensure excellent strength, toughness, and weldability for applications like bridges, offshore platforms, wind towers, and heavy machinery.

Gangsteel’s extensive inventory supports thicknesses from 6–200 mm, with global delivery in 7-30 days and certifications like EN 10204 3.1/3.2 and optional Z-quality (Z15, Z25, Z35).

Compared to S355N, S275NL offers lower strength but equivalent low-temperature toughness, providing a cost-effective solution for lighter structural projects in arctic regions.