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What is the difference between S355J0W and S355J0 steel

Jan 31, 2026 Leave a message

S355J0W steel plate is a weathering structural steel produced under the EN 10025-2 standard. As an improved atmospheric corrosion-resistant steel, it is widely used in bridges, building facades, transmission towers, and outdoor structures.

 

S355J0W steel plate

S355J0W steel plate

 

GNEE Steel manufactures and exports high-quality S355J0W steel plates, offering hot rolled, normalized, and normalized rolled conditions. Our products ensure long-lasting corrosion resistance, excellent mechanical performance, and reliable fabrication quality.

 

👉 Contact us for the latest S355J0W steel plate price list and mill certificates.

 

S355J0W vs S355J0 Steel | Material Overview

 

 

S355J0W differs from S355J0 carbon structural steel by its improved atmospheric corrosion resistance, achieved through optimized alloying with Ni, Cr, Mo, and Cu.

 

S355J0W: Weathering steel with high toughness at 0°C, enhanced resistance to rust and atmospheric corrosion

 

S355J0: Standard carbon structural steel for general applications

 

This makes S355J0W steel plate ideal for outdoor and harsh environments, whereas S355J0 is used for standard structural components.

 

Chemical Composition of S355J0W and S355J0 Steel

 

 

S355J0W Chemical Composition (Max %)

Element C Si Mn P S Ni Cr Mo Cu N Zr Ceq Max
S355J0W 0.16 0.50 0.5–1.5 0.03 0.025 0.65 0.4–0.8 0.3 0.25–0.55 0.010 0.15 0.52

Note: For every 0.005 decrease in maximum P, N may increase by 0.001 (up to 0.012 max).

 

S355J0 Chemical Composition (Max %)

Element C Si Mn P S Cu N
S355J0 0.22 0.2–0.55 1.6 0.025 0.025 0.3 0.009

 

Mechanical Properties of S355J0W Steel Plate

 

 

S355J0W steel plate offers excellent mechanical performance across different thicknesses.

Mechanical Properties by Thickness

Thickness (mm) ReH (MPa) Rm (MPa) A (%) Impact Temp (°C) Akv (J) Remarks
>40–63 ≥335 470–630 ≥19 0 ≥27 Hot rolled / Normalized / Normalized rolled, transverse sampling
>63–80 ≥325 470–630 ≥18 0 ≥27 Hot rolled / Normalized / Normalized rolled
>80–100 ≥315 470–630 ≥18 0 ≥27 Hot rolled / Normalized / Normalized rolled
>100–150 ≥295 450–600 ≥18 0 ≥27 Hot rolled / Normalized / Normalized rolled

 

Advantages of S355J0W Steel Plate

 

 

High Corrosion Resistance: Ideal for outdoor exposure, bridges, and facades

Good Mechanical Properties: Yield ≥295 MPa, tensile 450–630 MPa

Excellent Toughness: Impact energy ≥27 J at 0°C

Processing Performance: Easy to cut, weld, drill, and form

Long Service Life: Wear-resistant and suitable for harsh environments

 

Weathering steel for atmospheric corrosion

Hot rolled, normalized, normalized rolled delivery options

Wide thickness range for different engineering needs

Suitable for structural fabrication, bridge decks, transmission towers, and shipbuilding

 

S355J0W steel Deliver condition

 

 

Hot Rolled, Cold Rolled, Normalized, Quenched, Tempering, Thermal Mechanical Control Process (TMCP), Electroslag Remelting Technical, HIC test.

 

S355J0W steel Application range

 

 

The S355J0W steels are used for various types of welded, bolted and riveted constructions e.g. steel frame structures, bridges, tanks and containers, exhaust systems, vehicles and equipment constructions and so on.

 

In summary, S355J0W steel plate is a high-strength, atmospheric corrosion-resistant structural steel, offering excellent mechanical properties, impact toughness, and processing performance.

 

Compared with standard S355J0 steel, S355J0W is optimized for outdoor and harsh environmental applications.

 

Contact GNEE today for the latest S355J0W steel plate price list, technical datasheets, and project support.

 

info-514-725

 

What is Application of S355J0W Steel Plate

EN 10025_5 S355J0W Corrosion resistant steel plate is mainly used for container steel.Moreover, With improved atmospheric corrosion resistance S355J0W applications is as following: architecture, smokestacks, fabrication,freight wagons, silos, pylons and bridges.

 

What is EN 10025-5 steel plate S355J0W equivalent material

The steel plate S355J0W is under standard EN 10025-5. For S355J0W, S is short for structural steel; 355 means the minimum yield strength of S355J0W steel shall be 355Mpa; and W is for weather steel. EN 10025-5 steel plate S355J0W is kind of a weather resistant steel, and it can be more accurately termed as atmospheric corrosion resistant steel.

 

Do you have certificates or test reports for EN 10025-5 steel plate S355J0W?
Yes, we have MTC, ISO, SGS report, etc.


How long is your delivery time for EN 10025-5 steel plate S355J0W?
Generally it is 5-10 days for stock. And 35 days or so for fresh production, which is also up to the required quantity, specs, technical requirements and so on factors.


Do you provide EN 10025-5 steel plate S355J0W sample? Is it free or extra?
Yes, sample free. But the freight cost should be paid by the customer.

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