P355N vs S355J2+N: 69% composition overlap. Moderate differences, generally not direct substitutes.
P355N vs S355J2+N
Side-by-side chemical composition and mechanical property comparison.
Overview
P355N
1.0562
Weldable fine-grained non-alloy steel for pressure vessels with minimum yield strength 355 MPa in normalized condition. N designation indicates impact testing at room temperature. Widely used medium-strength pressure vessel grade for boilers, heat exchangers, storage tanks, and process vessels. Also standardized for seamless tubes (EN 10216-3) and welded tubes (EN 10217-3). Equivalent to ASTM A537 Class 1.
S355J2+N
1.0577
Normalized structural steel with 355 MPa minimum yield strength and J2 impact toughness (27J at -20°C). The normalized delivery condition (+N) ensures refined grain structure and uniform properties throughout the cross-section. Required for EN 1090 execution classes EXC3/EXC4 in structural steelwork. The standard choice for bridges, high-rise frames, crane runways, and wind tower sections where both strength and guaranteed low-temperature toughness are needed. Weldable with CEV typically <0.45.
| P355N | S355J2+N | |
|---|---|---|
| Material Number | 1.0562 | 1.0577 |
| Category | Carbon Steel | Carbon Steel |
| Standard | EN 10028-3 | EN 10025-2 |
Chemical composition (wt%)
| Element | P355N | S355J2+N | Overlap |
|---|---|---|---|
| C | ≤ 0.18% | ≤ 0.2% | OK |
| Si | ≤ 0.5% | ≤ 0.55% | OK |
| Mn | 1.1–1.7% | ≤ 1.6% | Partial |
| P | ≤ 0.025% | ≤ 0.03% | OK |
Mechanical properties
| Property | P355N | S355J2+N | Unit |
|---|---|---|---|
| tensile_strength | 490–630 | 470–630 | MPa |
| yield_strength | ≥ 355 | ≥ 355 | MPa |
| elongation | ≥ 22 | ≥ 22 | % |
Compatibility Assessment
P355N and S355J2+N have moderate differences (69% overlap). They are generally not direct substitutes. Consider the specific requirements of your application.
Automated assessment based on composition analysis
Frequently Asked Questions
Is P355N the same as S355J2+N?
P355N and S355J2+N have a 69% composition overlap. They are generally not directly interchangeable.
Can I replace P355N with S355J2+N?
Generally not recommended. The compositions differ significantly (69% overlap). These materials have different alloying concepts and are intended for different applications.
What is the difference between P355N and S355J2+N?
The main differences are in the following elements: Mn. P355N is a Carbon Steel grade, while S355J2+N is a Carbon Steel grade.
View full data for each material:
Data provided for reference only. Always verify against the applicable specification for critical applications.
All data is for reference only. Equivalents indicate similarity, not identity. Always verify against the applicable specification for safety-critical applications. materialref.com accepts no liability for decisions based on this data.