C15E vs S355J0: 52% composition overlap. Moderate differences, generally not direct substitutes.
C15E vs S355J0
Side-by-side chemical composition and mechanical property comparison.
Overview
C15E
1.1141
Low-carbon unalloyed case hardening steel — 0.12-0.18% C. Between C10E (softer core) and C22E (harder core) in the case-hardening range. Good balance of surface hardness (HRC 58-62) and core toughness after carburizing. Modern designation for Ck15. Used for small gears, pins, bushings, levers, and carburized parts where moderate core strength is acceptable. Also used for cold forming and deep drawing.
S355J0
1.0553
Non-alloy structural steel with 355 MPa min yield and 27J impact at 0°C. The "J0" variant between JR (+20°C) and J2 (-20°C). Former designation St52-3U (DIN 17100). Good weldability (CEV ≤0.47). Used for bridges, cranes, buildings, wind turbines, heavy machinery frames, and general structural applications requiring moderate low-temperature toughness.
| C15E | S355J0 | |
|---|---|---|
| Material Number | 1.1141 | 1.0553 |
| Category | Carbon Steel | Carbon Steel |
| Standard | EN 10084 | EN 10025-2 |
Chemical composition (wt%)
| Element | C15E | S355J0 | Overlap |
|---|---|---|---|
| C | 0.12–0.18% | 0–0.22% | OK |
| Si | 0–0.4% | 0–0.55% | OK |
| Mn | 0.3–0.6% | 0–1.6% | OK |
| P | 0–0.025% | 0–0.035% | OK |
Mechanical properties
| Property | C15E | S355J0 | Unit |
|---|---|---|---|
| tensile_strength | 350–490 | 470–630 | MPa |
| yield_strength | 210–260 | ≥ 355 | MPa |
| elongation | 25–32 | ≥ 22 | % |
Compatibility Assessment
C15E and S355J0 have moderate differences (52% overlap). They are generally not direct substitutes. Consider the specific requirements of your application.
Automated assessment based on composition analysis
Frequently Asked Questions
Is C15E the same as S355J0?
C15E and S355J0 have a 52% composition overlap. They are generally not directly interchangeable.
Can I replace C15E with S355J0?
Generally not recommended. The compositions differ significantly (52% overlap). These materials have different alloying concepts and are intended for different applications.
What is the difference between C15E and S355J0?
The main differences are in the following elements: overall alloying content. C15E is a Carbon Steel grade, while S355J0 is a Carbon Steel grade.
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Data provided for reference only. Always verify against the applicable specification for critical applications.
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