EN-GJS-400-15 vs S355J2W: 25% composition overlap. Significantly different materials serving different application areas.
EN-GJS-400-15 vs S355J2W
Side-by-side chemical composition and mechanical property comparison.
Overview
EN-GJS-400-15
5.3106
Ferritic ductile (spheroidal graphite) cast iron with minimum tensile strength 400 MPa and minimum elongation 15%. The most widely used ductile iron grade worldwide. Spheroidal graphite morphology achieved by magnesium treatment provides far superior ductility and impact resistance compared to grey iron. Used for water and gas pipes, valve bodies, pump housings, automotive components, gearbox housings, and general engineering castings. Equivalent to DIN GGG40, ASTM A536 60-40-18, JIS FCD400.
S355J2W
1.8965
The most widely used structural weathering steel with minimum yield strength 355 MPa and impact testing at -20°C (J2 designation). Forms a protective patina of stable rust that eliminates the need for painting. Cu, Cr, and P additions provide atmospheric corrosion resistance up to 8 times that of plain carbon steel. Used for unpainted bridges, outdoor sculptures, railway wagons, architectural facades, transmission towers, and containers. Equivalent to ASTM A588 / Corten B.
| EN-GJS-400-15 | S355J2W | |
|---|---|---|
| Material Number | 5.3106 | 1.8965 |
| Category | Alloy Steel | Alloy Steel |
| Standard | EN 1563 | EN 10025-5 |
Chemical composition (wt%)
| Element | EN-GJS-400-15 | S355J2W | Overlap |
|---|---|---|---|
| C | 3.2–3.8% | ≤ 0.16% | No overlap |
| Si | 2.2–2.8% | ≤ 0.5% | No overlap |
| Mn | 0.1–0.3% | 0.5–1.5% | No overlap |
| P | ≤ 0.05% | ≤ 0.03% | OK |
Mechanical properties
| Property | EN-GJS-400-15 | S355J2W | Unit |
|---|---|---|---|
| tensile_strength | ≥ 400 | 470–630 | MPa |
| yield_strength | ≥ 250 | ≥ 355 | MPa |
| elongation | ≥ 15 | ≥ 20 | % |
Compatibility Assessment
EN-GJS-400-15 and S355J2W have significantly different compositions (25% overlap). These materials are not interchangeable and serve different application areas.
Automated assessment based on composition analysis
Frequently Asked Questions
Is EN-GJS-400-15 the same as S355J2W?
EN-GJS-400-15 and S355J2W have a 25% composition overlap. They are generally not directly interchangeable.
Can I replace EN-GJS-400-15 with S355J2W?
Generally not recommended. The compositions differ significantly (25% overlap). These materials have different alloying concepts and are intended for different applications.
What is the difference between EN-GJS-400-15 and S355J2W?
The main differences are in the following elements: C, Si, Mn. EN-GJS-400-15 is a Alloy Steel grade, while S355J2W is a Alloy 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.