Like S355 J0WP, S355 J0W 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 S355 J0W, like all weathering steels, offers excellent, cost effective protection against atmospheric conditions without the need for painting or external treatment.
S355 J0WP tends to be used for structures which use thinner materials.
Grades & Equivalents of S355 J0W Weathering Steel
The grades and equivalents for S355 J0W Weathering Steel are provided in the table below.
| EN 10025-5:2004 |
Corten® |
| S355 J0WP |
Corten® A |
| S355 J0W & S355 J2W |
Corten® B |
Chemical Composition of S355 J0W Weathering Steel
The chemical composition of S355 J0W Weathering Steel is provided in the table below.
| Designation |
Chemical Composition
(% by mass - max unless stated) |
Mechanical Property (min) |
| Type |
No. |
De
oxidation |
C |
Si |
Mn |
P |
S |
N |
Cr |
Cu |
Others |
Impact Energy
KV (test temp) |
| ° C |
J |
| S355J0W |
1.8959 |
FN |
0.16 |
0.50 |
0.50/
1.50 |
0.040 |
0.040 |
0.009 |
0.40/
0.80 |
0.25/
0.55 |
Ni 0.65 Mo |
0 |
27 |
Mechanical Properties of S355 J0W Weathering Steel
The mechanical properties of S355 J0W Weathering Steel are provided in the tables below.
| Type |
No. |
Yield strength for thickness (mm) |
Tensile strength
for thickness (mm) |
Test piece
orientation |
| ≤16 |
>16 ≤ 40 |
>40 ≤ 63 |
>63 ≤ 80 |
>80 ≤ 100 |
>3 |
>3 ≤ 100 |
| N/mm2 |
N/mm2 |
| S355J0W |
1.8959 |
355 |
345 |
335 |
325 |
315 |
510/680 |
490/630 |
L |
| Type |
No. |
Elongation A for thicknesses in mm |
| >1.5≤2 |
>2≤2.5 |
>2.5≤3.0 |
>3≤40 |
>40≤63 |
>63≤100 |
| % |
| S355J0W |
1.8959 |
19 |
17 |
18 |
22 |
21 |
20 |
This information has been sourced, reviewed and adapted from materials provided by Masteel UK Ltd.
For more information on this source, please visit Masteel UK Ltd