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As a leading exporter and manufacturer of high-quality structural steel plates, Gangsteel specializes in producing S420 steel grades compliant with EN 10025 standards.
S420 steelis a high-strength, low-alloy (HSLA) structural steel with 420 MPa minimum yield strength, available in multiple variants across EN 10025-2 and EN 10025-3 for different applications.
It is designed for welded constructions requiring high strength-to-weight ratio, good weldability, and toughness in bridges, cranes, offshore platforms, high-rise buildings, and pressure vessels.
Our S420 steel plates are delivered in as-rolled, normalized, or thermomechanically rolled conditions depending on the grade.
For a comprehensive overview of our en 10025 3 normalized steel plate offerings, explore our full range.
|
Grade |
Standard |
Delivery |
Yield (MPa) |
Impact Test |
Best For |
|---|---|---|---|---|---|
|
S420N |
EN 10025-3 |
Normalized |
420 |
-20°C (40 J) |
Welded, moderate cold |
|
S420NL |
EN 10025-3 |
Normalized |
420 |
-50°C (27 J) |
Arctic / offshore |
|
S420MC |
EN 10149-2 |
Thermomechanical |
420 |
No standard |
Cold forming |
S420= 420 MPa yield (≤16 mm). N/NL = fine-grain normalized (EN 10025-3). MC = cold-forming (EN 10149-2).
|
Grade |
C |
Si |
Mn |
P |
S |
CEV |
|---|---|---|---|---|---|---|
|
S420N / S420NL |
0.20 |
0.60 |
1.00–1.70 |
0.025 |
0.020 |
0.48 |
|
S420MC |
0.20 |
0.50 |
1.80 |
0.025 |
0.020 |
0.43 |
Lower P/S in N/NL= better toughness. CEV ensures excellent weldability.
|
Grade |
Yield ReH (MPa) |
Tensile Rm (MPa) |
Elongation A (%) |
Impact (Long., J) |
|---|---|---|---|---|
|
S420N |
420 |
520–680 |
19 |
40 at -20°C |
|
S420NL |
420 |
520–680 |
19 |
27 at -50°C |
|
S420MC |
420 |
480–620 |
19 |
No standard |
Elongation per Lo = 5.65 √So. Yield decreases with thickness.
|
Grade |
Use Case |
|---|---|
|
S420N |
Bridges, moderate cold |
|
S420NL |
Offshore, arctic, wind towers |
|
S420MC |
Automotive, cold-formed parts |
Contact: admin@gangsteel.comS420N Page: en 10025 3 s420n normalized structural steel plate S420NL Page: en 10025 3 s420nl normalized structural steel plate
S420 steelis a high-strength structural steel with 420 MPa yield, available in:
Choose based on impact temperature and forming needs.
S420 steelis a high-strength low-alloy structural steel with 420 MPa min yield (≤16 mm), used in welded and cold-formed structures.
Only impact test:
Same strength, chemistry.
S420MCis thermomechanically rolled cold-forming steel (EN 10149-2) with 420 MPa yield, for automotive and forming — not for welding.
A572 Gr. 65(normalized) for S420N/NL.
Yes— CEV ≤ 0.48, no preheat ≤50 mm.
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