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S355N Steel Sizes and Availability

At Gangsteel, we’re excited to detail the S355N steel sizes and availability, ensuring engineers and project managers have the information needed for seamless procurement. S355N, a high-strength, low-alloy structural steel under EN 10025-3, is renowned for its fine-grain structure, 355 MPa yield strength, and -20°C toughness, making it a top choice for bridges, cranes, and building frameworks in moderate climates.

As part of the en 10025 3 normalized steel plate family, S355N delivers reliable performance. Gangsteel outlines its standard sizes, custom options, stock availability, and delivery details, comparing it to grades like en 10025 3 s420n normalized structural steel plate and en 10025 3 s460n normalized structural steel plate. For quotes or stock checks, contact us or visit our en 10025 3 s355n normalized structural steel plate page.

 

What is S355N Steel?

S355N is a normalized or normalized rolled fine-grain structural steel under EN 10025-3:2019, with:

  • S: Structural steel.
  • 355: Minimum yield strength of 355 MPa (≤16 mm).
  • N: Normalized, with impact toughness tested at -20°C.
  • Material Number: 1.0545.

The normalization process refines the grain structure, enhancing S355N’s strength, toughness, and weldability, making it ideal for moderate climates. Compared to en 10025 3 s460n normalized structural steel plate, S355N has lower strength (355 MPa vs 460 MPa) but is more versatile and cost-effective for general structural applications.

S355N Steel Sizes

Gangsteel offers S355N steel in a wide range of sizes to meet diverse project needs:

Dimension Type

Standard Range

Custom Options

Notes

Thickness

6–200 mm

Up to 250 mm

Thicker plates ideal for heavy structures; thinner for lighter applications.

Width

2000–3000 mm

Up to 3500 mm

Standard widths for efficient fabrication; custom for specialized designs.

Length

Up to 12,000 mm

Up to 14,000 mm

Long lengths reduce welding seams; custom for transport constraints.

  • Plate Sizes: Common stock sizes include 6–50 mm thick × 2000–2500 mm wide × 6000–12000 mm long.
  • Custom Sizes: Tailored to project requirements, with minimal upcharges for non-standard dimensions.
  • Z-Quality: Optional Z15, Z25, Z35 per EN 10164 for through-thickness properties, similar to en 10025 3 s275n normalized structural steel plate.

S355N sizes are versatile, supporting applications from thin sheets to heavy plates.

 

S355N Steel Availability

Gangsteel maintains robust availability for S355N steel to minimize lead times:

  • Stock Inventory: Extensive stock in China, covering thicknesses 6–200 mm, widths 2000/2500/3000 mm, and lengths up to 12,000 mm. Immediate availability for standard sizes.
  • Lead Time: 7–30 days for stock items; 4–6 weeks for custom rolling or Z-quality options.
  • Global Shipping: To Europe, Asia, Middle East, and Americas, with certifications like EN 10204 3.1/3.2 and ABS/LR/BV/DNV approvals.
  • Production Capacity: As a leading producer, Gangsteel can supply up to 500 tons per month, ensuring scalability for large projects.
  • Custom Orders: Minimum order 1 ton; bulk orders (20+ tons) qualify for discounts.

Compared to en 10025 3 s460n normalized structural steel plate, S355N has broader availability due to its popularity in general construction.

 

Chemical Composition of S355N Steel

Gangsteel ensures S355N meets EN 10025-3 chemical composition standards:

Element

Ladle Analysis (max %)

Product Analysis (max %)

Carbon (C)

0.20

0.22

Silicon (Si)

0.50

0.55

Manganese (Mn)

0.90-1.65

0.85-1.75

Phosphorus (P)

0.030

0.035

Sulfur (S)

0.025

0.030

Nitrogen (N)

0.025

0.027

Aluminum (Al)

0.020 (min, total)

0.015 (min, total)

Niobium (Nb)

0.05

0.06

Vanadium (V)

0.10

0.12

Titanium (Ti)

0.05

0.06

Chromium (Cr)

0.30

0.35

Nickel (Ni)

0.50

0.55

Molybdenum (Mo)

0.10

0.12

Copper (Cu)

0.55

0.60

Carbon Equivalent (CEV): ≤0.43% (≤63 mm), calculated as CEV = C + Mn/6 + (Cr + Mo + V)/5 + (Ni + Cu)/15, ensuring excellent weldability, similar to en 10025 3 s420n normalized structural steel plate.

 

Mechanical Properties of S355N Steel

Gangsteel guarantees S355N’s mechanical properties support its sizes and availability:

Thickness (mm)

Yield Strength (min, MPa)

Tensile Strength (MPa)

Elongation (min, %)

Impact Energy (min, J @ -20°C)

≤16

355

470-630

22

27

16<t≤40

345

470-630

22

27

40<t≤63

335

470-630

22

27

63<t≤80

325

470-630

22

27

80<t≤100

315

470-630

22

27

100<t≤150

295

450-610

22

27

150<t≤200

285

450-610

22

27

  • Yield Strength: Starts at 355 MPa for thin plates, ideal for moderate loads in structures like buildings.
  • Tensile Strength: 470-630 MPa ensures durability under tensile forces.
  • Elongation: ≥22% supports complex structural designs.
  • Impact Toughness: ≥27 J at -20°C ensures reliability in moderate climates, comparable to [en 10025 3 s355nl normalized structural steel plate.

 

 

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