C10E vs S235JR: 52% composition overlap. Moderate differences, generally not direct substitutes.
C10E vs S235JR
Side-by-side chemical composition and mechanical property comparison.
Overview
C10E
1.1121
Lowest practical carbon case-hardening steel — 0.07-0.13% C. After carburizing: hard surface (HRC 55-60) with extremely soft, tough core (HRC 15-20). Maximum impact absorption. Modern designation for Ck10. Used for pins, bushings, small gears, camshaft lobes, and any carburized part where maximum core toughness and ductility are critical. Also used as cold-heading and deep-drawing wire/strip.
S235JR
1.0038
General-purpose structural steel with minimum yield strength of 235 MPa. The most common structural steel grade in Europe for general construction, frames, and non-critical structural applications.
| C10E | S235JR | |
|---|---|---|
| Material Number | 1.1121 | 1.0038 |
| Category | Carbon Steel | Carbon Steel |
| Standard | EN 10084 | EN 10025-2 |
Chemical composition (wt%)
| Element | C10E | S235JR | Overlap |
|---|---|---|---|
| C | 0.07–0.13% | 0–0.17% | OK |
| Si | 0–0.4% | 0–0.4% | OK |
| Mn | 0.3–0.6% | 0–1.4% | OK |
| P | 0–0.025% | 0–0.035% | OK |
Mechanical properties
| Property | C10E | S235JR | Unit |
|---|---|---|---|
| tensile_strength | 310–440 | 360–510 | MPa |
| yield_strength | 180–220 | ≥ 235 | MPa |
| elongation | 28–35 | ≥ 26 | % |
Compatibility Assessment
C10E and S235JR 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 C10E the same as S235JR?
C10E and S235JR have a 52% composition overlap. They are generally not directly interchangeable.
Can I replace C10E with S235JR?
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 C10E and S235JR?
The main differences are in the following elements: overall alloying content. C10E is a Carbon Steel grade, while S235JR 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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