S235J0W and S235J2W are both European standard (EN 10025-5) weathering (Corten) steels, offering improved atmospheric corrosion resistance, ideal for bridges, facades, and vehicle construction without needing surface protection. The key difference lies in their impact toughness testing, with S235J0W requiring Charpy V-notch impact energy at 0°C, while S235J2W requires it at -20°C, indicating J2W offers better low-temperature performance for robust, durable structures.
Chemical composition of the Product analysis of grade S235J0W
|
C |
Si |
Mn |
Cu |
P |
S |
Cr |
N |
|
0.16 |
0.45 |
0.15-0.70 |
0.20-0.60 |
0.040 |
0.040 |
0.35-0.85 |
0.010 |
Chemical composition of the Product analysis of grade S235J2W
|
C |
Si |
Mn |
Cu |
P |
S |
Cr |
N |
|
0.16 |
0.45 |
0.15-0.70 |
0.20-0.60 |
0.040 |
0.035 |
0.35-0.85 |
0.010 |
Mechanical properties of grade S235J0W
|
Temperature |
-20 |
-10 |
0 |
20 |
|
Notch impact test. Min. absorbed energy J |
27 |
|
Nominal thickness (mm) |
to 16 |
16 - 40 |
40 - 63 |
63 - 80 |
80 - 100 |
100 - 150 |
|
ReH - Minimum yield strength (MPa) |
235 |
225 |
215 |
215 |
215 |
195 |
|
Nominal thickness (mm) |
to 3 |
3 - 100 |
100-150 |
|
Rm -Tensile strength (MPa) |
360-510 |
360-510 |
350-500 |
|
Nominal thickness (mm) |
≥1.5＜2 |
≥2﹤2.5 |
≥2.5＜3 |
≥3＜40 |
≥40﹤63 |
≥6﹤100 |
≥100﹤150 |
|
A - Minimum elongation Lo = 5,65 √ So (%) Longitudinal |
19 |
20 |
21 |
26 |
25 |
24 |
22 |
Mechanical properties of grade S235J2W
|
Temperature |
-20 |
-10 |
0 |
20 |
|
Notch impact test. Min. absorbed energy J |
27 |
|
Nominal thickness (mm) |
to 16 |
16 - 40 |
40 - 63 |
63 - 80 |
80 - 100 |
100 - 150 |
|
ReH - Minimum yield strength (MPa) |
235 |
225 |
215 |
215 |
215 |
195 |
|
Nominal thickness (mm) |
to 3 |
3 - 100 |
100-150 |
|
Rm -Tensile strength (MPa) |
360-510 |
360-510 |
350-500 |
|
Nominal thickness (mm) |
≥1.5＜2 |
≥2﹤2.5 |
≥2.5＜3 |
≥3＜40 |
≥40﹤63 |
≥6﹤100 |
≥100﹤150 |
|
A - Minimum elongation Lo = 5,65 √ So (%) Longitudinal |
19 |
20 |
21 |
26 |
25 |
24 |
22 |
Key Characteristics
Type: Low-alloy, weathering (Corten) structural steel.
Standard: EN 10025-5.
Yield Strength: Minimum 235 MPa for thicknesses up to 16mm.
Tensile Strength: Typically 360-510 MPa.
Corrosion Resistance: Forms a protective rust layer (patina).
Weldability: Good weldability for welded, riveted, or bolted structures.
The "J" Designation: Impact Toughness
J0: Indicates a minimum Charpy V-notch impact energy of 27J at 0°C.
J2: Indicates a minimum Charpy V-notch impact energy of 27J at -20°C, making it tougher in colder conditions.
Applications
Bridges, facades, towers, and architectural structures.
Vehicle and railway construction.
Containers and marine structures (where rust-forming properties are desirable).
