S355JOW Weathering Steel

Like S355J0WP, S355J0W is a weathering steel and is an equivalent to Corten B.

As the material rusts when exposed to atmospheric elements, the material builds its own protective layer which prevents the steel from further oxidation. Therefore S355J0W, like all weathering steels, offers excellent, cost effective protection against atmospheric conditions without the need for painting or external treatment.

S355J0WP tends to be used for structures which use thinner materials.

Grades & Equivalents

EN 10025-5:2004Corten
S355JOWCorten B

Mechanical Properties of S355JOW

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
S355JOW355345335325315295510/680470/630450/600

Chemical Composition of S355JOW

 %
C0.16
Si0.50
Mn0.50/1.50
P0.035
S0.035
N0.009
Cr0.40/0.80
Cu0.25/0.55