Products Description
EN10025-5 S355J0WP weathering steel is a structural weathering steel which is also referred to as atmospheric corrosion resistant steel.The main alloying elements are chromium nickel and copper with added phosphorous which gives it excellent self protecting qualities.
As the steel reacts with elements in the atmosphere, the material forms a layer of rust over time which in essence protects the steel from corrosion.
EN10025-5 S355J0WP weathering steel Chemical Composition(max%)
Grade |
C |
Si |
Mn |
P |
S |
N |
Cr |
Cu |
|
S355J0WP |
0.12 |
0.75 |
1.00 |
0.06--0.15 |
0.035 |
0.09 |
0.30--1.25 |
0.25--0.55 |
EN10025-5 S355J0WP weathering steel Mechanical Properties(min)
Grade |
Min.Yield Strength MPa |
Tensile Thickness(mm) |
Impact Test |
|||||
|
t≤16 |
16<t≤40 |
40<t≤100 |
t>100 |
t≤100 |
t>100 |
°C |
J |
|
|
S355J0WP |
355 |
345 |
-- |
-- |
470--630 |
450--600 |
0 |
27 |
Products Application
EN 10025-5 S355J0WP Corten Steel Plates are commonly used in power generation systems, particularly for diaphragm plates and insulation panels in Rotary Air Heaters (RAH) at the cold-end section of boilers.
These components operate under cyclic temperature variations and exposure to flue gases, which demand materials with excellent resistance to oxidation and condensation-induced corrosion.
The S355J0WP grade is specially designed for such environments, as it contains alloying elements like copper, chromium, and phosphorus that enhance its atmospheric corrosion resistance. When exposed to air, the steel forms a stable oxide layer that protects the surface from further degradation - significantly extending its service life compared to conventional carbon steels.
In RAH cold-end applications, these plates are used to manufacture diaphragm walls, partition panels, and insulation casings, ensuring long-term dimensional stability even at operating temperatures ranging from 120°C to 400°C.
The material's minimum yield strength of 355 MPa and tensile strength between 470–630 MPa provide excellent structural performance under both static and cyclic loads.
By using S355J0WP weathering steel for rotary air heater components, power plants benefit from:
Reduced maintenance costs due to self-protective corrosion behavior.
Improved resistance to acid dew point corrosion at the cold end.
Enhanced operational reliability and service life of the RAH system.
Thus, EN 10025-5 S355J0WP plates represent a reliable and cost-effective choice for boiler cold-end structures, air preheaters, and other thermal insulation assemblies in modern power plant design.
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FAQ
Q: What is S355J0WP equivalent to ASTM?
A: S355J0WP sheet material is a weathering steels grade equivalent to ASTM A242 and COR-TEN A. ASTM A242 is a specification for high strength structural steels with atmospheric corrosion resistance. COR-TEN A is a brand name for weathering steels.
Q: What is the meaning of S355J0WP?
A: S355J0WP is a structural weathering steel which is also referred to as atmospheric corrosion resistant steel. The main alloying elements are chromium nickel and copper with added phosphorous which gives it excellent self protecting qualities.
