S460N, typically S460N under EN 10025-3, offers a minimum yield strength of 460 MPa and -20°C toughness, while S355J2, commonly S355J2 under EN 10025-2, provides 355 MPa yield strength and similar -20°C toughness. S460N is suited for heavier loads, while S355J2 is more versatile for general structural applications.
As part of the en 10025-3 normalized steel plate and EN 10025-2 families, these grades serve distinct purposes.
S460N: A normalized or normalized rolled fine-grain structural steel with a minimum yield strength of 460 MPa and impact toughness tested at -20°C. It's designed for high-load applications like bridges and cranes in moderate climates.
S355J2: A non-alloy structural steel with a minimum yield strength of 355 MPa and impact toughness tested at -20°C. It's widely used for general construction, buildings, and infrastructure due to its versatility and cost-effectiveness.
S460N offers higher strength for more demanding projects, while S355J2 is suitable for a broader range of structural needs with moderate strength requirements.
Chemical Composition Comparison
|
Element |
S460N (EN 10025-3, Ladle, max %) |
S355J2 (EN 10025-2, max %) |
Role in Properties |
|---|---|---|---|
|
Carbon (C) |
0.20 |
0.20 |
Similar, ensures weldability and toughness. |
|
Silicon (Si) |
0.60 |
0.55 |
S460N's higher Si aids deoxidation. |
|
Manganese (Mn) |
1.00-1.70 |
1.60 |
S460N's range supports higher strength. |
|
Phosphorus (P) |
0.030 |
0.025 |
S355J2's lower P enhances toughness. |
|
Sulfur (S) |
0.025 |
0.025 |
Identical, ensures weld quality. |
|
Niobium (Nb) |
0.05 |
- |
S460N's Nb refines grains for toughness. |
|
Vanadium (V) |
0.20 |
- |
S460N's V boosts strength. |
|
Aluminum (Al) |
0.020 (min, total) |
- |
S460N's Al enhances fine-grain structure. |
|
Chromium (Cr) |
0.30 |
0.30 |
Similar, improves corrosion resistance. |
|
Nickel (Ni) |
0.80 |
0.30 |
S460N's higher Ni improves toughness. |
|
Molybdenum (Mo) |
0.10 |
- |
S460N's Mo enhances strength. |
|
Copper (Cu) |
0.55 |
0.55 |
Similar, aids corrosion resistance. |
|
Nitrogen (N) |
0.025 |
0.012 |
S355J2's lower N reduces brittleness. |
Mechanical Properties Comparison
|
Property |
S460N (EN 10025-3, ≤16 mm) |
S355J2 (EN 10025-2, ≤16 mm) |
|---|---|---|
|
Yield Strength (min, MPa) |
460 |
355 |
|
Tensile Strength (MPa) |
540-720 |
470-630 |
|
Elongation (min, %) |
17 |
22 |
|
Impact Toughness (min, J) |
27 @ -20°C |
27 @ -20°C |
|
Hardness (Brinell) |
170-210 (typical) |
150-190 (typical) |
Applications
S460N: Used in high-load structures like bridges, cranes, and heavy machinery in moderate climates, where its 460 MPa yield strength supports heavier designs.
S355J2: Applied in general construction, buildings, bridges, and infrastructure, where 355 MPa yield strength is sufficient for moderate loads and cost-effectiveness is key.
S460N is chosen for projects requiring higher strength, while S355J2 is preferred for versatility and lower costs. For colder climates, consider en 10025 3 s460nl normalized structural steel plate with -50°C toughness.
Key Differences Summarized
|
Feature |
S460N (EN 10025-3) |
S355J2 (EN 10025-2) |
|---|---|---|
|
Standard |
EN 10025-3 (normalized, fine-grain) |
EN 10025-2 (non-alloy, hot-rolled) |
|
Yield Strength |
460 MPa (≤16 mm) |
355 MPa (≤16 mm) |
|
Tensile Strength |
540-720 MPa |
470-630 MPa |
|
Elongation |
≥17% |
≥22% |
|
Toughness |
≥27 J @ -20°C |
≥27 J @ -20°C |
|
CEV |
≤0.48% (≤63 mm) |
≤0.45% (≤40 mm) |
|
Applications |
High-load structures (bridges, cranes) |
General construction, buildings |
|
Cost |
Higher (due to strength, processing) |
Lower (simpler composition, processing) |
