C15E vs S275J0: 44% composition overlap. Significantly different materials serving different application areas.
C15E vs S275J0
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.
S275J0
1.0143
Structural steel with guaranteed Charpy impact at 0°C (KV >=27J). Between S235J0 and S355J0 in the strength range. ReH >=275 MPa. Very widely used in European construction: building frames, columns, beams, and general structural applications. Good weldability. Often specified as standard section material (IPE, HEA, UPN profiles).
| C15E | S275J0 | |
|---|---|---|
| Material Number | 1.1141 | 1.0143 |
| Category | Carbon Steel | Carbon Steel |
| Standard | EN 10084 | EN 10025-2 |
Chemical composition (wt%)
| Element | C15E | S275J0 | Overlap |
|---|---|---|---|
| C | 0.12–0.18% | 0–0.18% | OK |
| Si | 0–0.4% | ≥ 0% | OK |
| Mn | 0.3–0.6% | 0–1.5% | OK |
| P | 0–0.025% | 0–0.03% | OK |
Mechanical properties
| Property | C15E | S275J0 | Unit |
|---|---|---|---|
| tensile_strength | 350–490 | 410–560 | MPa |
| yield_strength | 210–260 | ≥ 275 | MPa |
| elongation | 25–32 | ≥ 21 | % |
Compatibility Assessment
C15E and S275J0 have significantly different compositions (44% overlap). These materials are not interchangeable and serve different application areas.
Automated assessment based on composition analysis
Frequently Asked Questions
Is C15E the same as S275J0?
C15E and S275J0 have a 44% composition overlap. They are generally not directly interchangeable.
Can I replace C15E with S275J0?
Generally not recommended. The compositions differ significantly (44% overlap). These materials have different alloying concepts and are intended for different applications.
What is the difference between C15E and S275J0?
The main differences are in the following elements: overall alloying content. C15E is a Carbon Steel grade, while S275J0 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.