Products Description
EN10155 S355J2WP Weathering Steel Plate is a hot-rolled structural steel product supplied in a technical delivery condition, specifically designed for long-term outdoor applications with outstanding atmospheric corrosion resistance.
In standard urban environments, the corrosion rate of this steel plate typically ranges from 0.015–0.025 mm/year. In coastal or salt spray environments, the corrosion rate is approximately 0.03–0.04 mm/year, significantly lower than the 0.1–0.15 mm/year rate observed for ordinary carbon steel.
Impact toughness reaches ≥35 J at -20°C for thick plates, ensuring structural integrity in low-temperature and cold climates.
The protective rust layer formed on S355J2WP steel in natural exposure environments typically stabilizes completely within 12–24 months, extending the steel's service life by 40–60 years and significantly reducing maintenance costs and coating frequency.
Furthermore, S355J2WP corten steel plates withstand repeated loading, vibration, and minor impacts without cracking in applications such as bridges, railway vehicles, and building facades. They maintain surface integrity even after exceeding 2000 hours of salt spray testing.
S355J2WP corten steel plate/weather resistant steel plate chemical composition
|
C max |
Si max |
Mn |
P |
S max |
N max |
Addition of Nitrogen combining elements |
Cr |
Cu |
|
0.12 |
0.75 |
1.0 max |
0.06-0.15 |
0.03 |
- |
yes |
0.30-0.1.25 |
0.25-0.55 |
S355J2WP corten steel plate/weather resistant steel plate mechanical property
|
Min. Yield Strength (MPa) |
Min. Tensile Strength (MPa) |
Elongation (%) |
|||||||||||||
|
Thickness (mm) |
Thickness (mm) |
Thickness (mm) |
|||||||||||||
|
≦16 |
>16 ≦40 |
>40≦63 |
>63≦80 |
>80≦100 |
100-150 |
<3 |
≥3≦100 |
100-150 |
>1.5≦2 |
>2≦2.5 |
>2.5<3 |
≥3≦40 |
>40≦150 |
>63≦100 |
100-150 |
|
355 |
345 |
|
|
|
|
510-680 |
470-630 |
|
14 |
15 |
16 |
20 |
- |
|
|
Application
Corrosion-resistant steel plate S355J2WP, compliant with EN 10025-5 standards, is widely used in the manufacture of storage tank steel. It is particularly suitable for industrial storage tanks requiring long-term corrosion resistance in sectors such as petroleum, chemical processing, liquid storage and transportation, and food processing.
Its corrosion resistance properties enable storage tanks to maintain an average annual corrosion rate typically below 0.02–0.03 mm/year in humid or mildly acidic environments, significantly extending service life and reducing maintenance costs.
Furthermore, S355J2WP weather resistant steel plate, with its enhanced atmospheric corrosion resistance, is extensively applied in outdoor projects such as building structures, chimneys, metal products, freight containers, silos, towers, and bridges. In coastal or industrial environments, its corrosion rate can be controlled at 0.03–0.04 mm/year, extending service life by 2–4 times compared to ordinary carbon steel.
The rust protective layer forming on the steel surface within 12–24 months not only resists salt spray, moisture, and atmospheric pollution but also significantly reduces the need for protective coatings or maintenance.
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