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EN 10025-3 S355NL Equivalent Material

What is EN 10025-3 S355NL Steel?

EN 10025-3 S355NL is a high-strength, fine-grained structural steel specified under the European standard EN 10025-3, which outlines delivery conditions for normalized/normalized rolled weldable fine grain structural steels. Delivered in a normalized or normalized rolled condition, it ensures a refined microstructure for enhanced toughness, weldability, and low-temperature performance. The designation "S355NL" indicates:

  • S: Structural steel.
  • 355: Minimum yield strength of 355 MPa for thicknesses up to 16 mm.
  • NL: Normalized with impact testing at -50°C for superior cold-weather durability.

As a fine grain structural steel, EN 10025-3 S355NL is ideal for applications like bridges, offshore platforms, and wind towers in cold climates. For more details, explore our EN 10025-3 S355NL normalized structural steel plate.

 

Equivalent Materials for EN 10025-3 S355NL

Finding equivalent materials for EN 10025-3 S355NL involves comparing its chemical composition, mechanical properties, and performance characteristics across international standards. While exact matches are rare due to differences in normalization and testing, the following grades are considered close equivalents:

Standard

Equivalent Steel Grade

Notes

EN 10025-4

S355M

Thermomechanically rolled (TMCP) for finer grains, similar strength.

EN 10025-3

S355N

Normalized, tested at -20°C, less suited for extreme cold.

DIN

StE 355 / TStE 355

German standard, similar composition and strength.

AFNOR (France)

E 36-4

Comparable strength and toughness.

BS (UK)

50 EE

British standard, aligns in yield and low-temp performance.

UNI (Italy)

Fe E 355 KTN

Italian equivalent with similar properties.

GB (China)

Q345E

Close in strength and -40°C toughness; slight composition variance.

ASTM / ASME (USA)

A572 Grade 65 (approximate)

Higher yield (~450 MPa), less exact due to normalization differences.

ISO

E355DD/E355E

Matches strength and low-temp toughness.

For related grades, check EN 10025-3 S355N normalized structural steel plate or EN 10025-3 S420NL normalized structural steel plate.

 

Chemical Composition Comparison

To understand equivalency, compare EN 10025-3 S355NL’s chemical composition with its counterparts. Below is the composition for S355NL (ladle analysis):

Element

Max % (Ladle Analysis)

Carbon (C)

0.18

Silicon (Si)

0.50

Manganese (Mn)

0.90-1.65

Phosphorus (P)

0.025

Sulfur (S)

0.015

Nitrogen (N)

0.015

Aluminum (Al)

0.02 (min, total)

Niobium (Nb)

0.05

Vanadium (V)

0.12

Titanium (Ti)

0.05

Carbon Equivalent (CEV): ≤0.43% (≤63 mm), calculated as CEV = C + Mn/6 + (Cr + Mo + V)/5 + (Ni + Cu)/15, ensuring weldability. Equivalents like Q345E (China) or A572 Grade 65 (ASTM) have similar CEV values but may vary slightly in alloying elements, affecting welding or toughness.

 

Mechanical Properties Comparison

EN 10025-3 S355NL’s mechanical properties are critical for equivalency:

Thickness (mm)

Yield Strength (min, MPa)

Tensile Strength (MPa)

Elongation (min, %)

Impact Energy (min, J @ -50°C)

≤16

355

470-630

22

27

Key Equivalents:

  • Q345E (China): Yield ~345 MPa, tensile 470-630 MPa, impact ≥34 J at -40°C; slightly less stringent than S355NL’s -50°C.
  • A572 Grade 65 (ASTM): Yield ≥450 MPa, tensile 550-690 MPa; higher strength but less focus on low-temp toughness.
  • S355M (EN 10025-4): Similar yield (355 MPa), but TMCP enhances weldability over S355NL’s normalization.

 

Applications of EN 10025-3 S355NL and Equivalents

EN 10025-3 S355NL and its equivalents are used in:

  • Offshore Platforms: Fatigue resistance in cold marine environments.
  • Wind Towers: Structural components in sub-zero climates.
  • Bridges and Cranes: Load-bearing elements in northern regions.
  • Pressure Vessels: Low-temperature storage systems.

Equivalents like Q345E or A572 Grade 65 are similarly applied but may require adjustments in welding or design due to slight differences in toughness or composition. Learn more about EN 10025-3 S460NL normalized structural steel plate for higher strength needs.

 

Why Choose EN 10025-3 S355NL or Equivalents from Gangsteel?

Gangsteel is a trusted supplier of EN 10025-3 S355NL and equivalent grades:

  • Inventory: Extensive stock of S355NL, S355N, and others in China.
  • Sizes: Thickness 6–250 mm, widths 2000/2500/3000 mm, lengths up to 12,000 mm.
  • Delivery: 7-30 days globally to Europe, Asia, Middle East, Americas.
  • Certifications: EN 10204 3.1/3.2, UT testing (EN 10160), ABS/LR/BV/DNV approvals.
  • Processing: Cutting, welding, bending to specifications.

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

 

FAQ

What is the closest ASTM equivalent to EN 10025-3 S355NL?A572 Grade 65 is closest but has higher yield (~450 MPa) and less focus on -50°C toughness.

How does EN 10025-3 S355NL compare to S355N?S355NL is tested at -50°C, while S355N at -20°C, making S355NL better for colder climates. See EN 10025-3 S355N normalized structural steel plate.

Is Chinese Q345E equivalent to S355NL?Q345E is close (yield ~345 MPa, -40°C impact), but S355NL’s -50°C toughness and EU standards are stricter.

Can EN 10025-3 S355NL be welded easily?Yes; CEV ≤0.43% supports GMAW/SAW with minimal preheating (100-150°C for >20 mm).

What are the applications of S355NL equivalents?Bridges, offshore platforms, wind towers, and pressure vessels, especially in cold regions.

How does S355NL differ from S420NL?S420NL has higher yield (420 MPa vs 355 MPa) but similar -50°C toughness. Check EN 10025-3 S420NL normalized structural steel plate.

What is the maximum thickness for S355NL?Up to 250 mm, with adjusted mechanical properties.

Why buy from Gangsteel?Reliable stock, fast global delivery, certified quality, and processing services for S355NL and equivalents.

Explore related grades like EN 10025-3 S275N normalized structural steel plate.

 

 

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