EN10025-3 S420N is a normalized rolled structural steel plate grade that is widely recognized for its excellent mechanical properties and versatile applications in various industries. This grade is compliant with the European standard for hot-rolled structural steel products and is particularly appreciated for its strength and durability.
Chemical Composition
The chemical composition of EN10025-3 S420N is strictly controlled to ensure the material's mechanical properties and weldability. The typical chemical composition includes the following elements:
| Main chemical elements composition of S420N steel plate | ||||||
| C | Si | Mn | P | S | Nb | V |
| 0.20 | 0.60 | 1.00-1.70 | 0.030 | 0.025 | 0.05 | 0.20 |
| Al(total) | Ti | Cr | Ni | Mo | Cu | N |
| ≥0.02 | 0.05 | 0.30 | 0.80 | 0.10 | 0.55 | 0.025 |
Mechanical Properties
The mechanical properties of S420N are characterized by its high strength and excellent toughness. The typical values for these properties are as follows:
| Thickness (mm) | ||||||||
| S420N | ≤ 16 | > 16 ≤ 40 | > 40 ≤ 63 | > 63 ≤ 80 | > 80 ≤ 100 | > 100 ≤ 150 | > 150 ≤ 200 | > 200 |
| Yield strength (≥Mpa) | 420 | 400 | 390 | 370 | 360 | 340 | 330 | 320 |
| ≤ 100 | > 100 ≤ 200 | > 200 | ||||||
| Tensile strength (Mpa) | 520-680 | 500-650 | 500-650 | |||||
Low-Temperature Impact Test
S420N steel plates are subjected to a low-temperature impact test to ensure they maintain their toughness and impact resistance at sub-zero temperatures. The material typically meets the requirements of -20°C impact testing.
Main Applications
The S420N grade is suitable for a variety of applications due to its high strength and good toughness. It is commonly used in the following sectors:
Construction of Bridges
Buildings and other large structures
Heavy machinery manufacturing
Offshore structures
Pressure vessels
Wind towers
