S355JOWP

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. 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.

S355J0WP (which is an equivalent grade to Corten A) provides a long lasting and economic structural steel solution for use in applications such as steel bridges stack gas applications and in steel sculptured buildings due to the material’s aesthetically pleasing finish.

Grades & Equivalents

EN 10025-5:2004Corten
S355JOWPCorten A

Mechanical Properties of S355JOWP

GradeMin. Yield Strength ReH MPa     Tensile Strength Rm MPa  
Nominal Thickness (mm)Nominal Thickness (mm)
<16>16 <40>40 <63>63 <80>80 <100>100 <150>3>3 <100>100 <150
S355JOWP355345510/680470/630

Chemical Composition of S355JOWP

 %
C0.12
Si0.75
Mn1.00
P0.06/0.15
S0.035
N0.009
Cr0.30/1.25
Cu0.25/0.55