C10E vs S275JR: 52% composition overlap. Moderate differences, generally not direct substitutes.
C10E vs S275JR
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.
S275JR
1.0044
Medium-strength structural steel with minimum yield strength of 275 MPa. Bridges the gap between S235JR and S355JR. Used for general structural applications, lattice towers, masts, and light crane components. Impact tested at +20°C (JR).
| C10E | S275JR | |
|---|---|---|
| Material Number | 1.1121 | 1.0044 |
| Category | Carbon Steel | Carbon Steel |
| Standard | EN 10084 | EN 10025-2 |
Chemical composition (wt%)
| Element | C10E | S275JR | Overlap |
|---|---|---|---|
| C | 0.07–0.13% | 0–0.21% | OK |
| Si | 0–0.4% | 0–0.6% | OK |
| Mn | 0.3–0.6% | 0–1.5% | OK |
| P | 0–0.025% | 0–0.035% | OK |
Mechanical properties
| Property | C10E | S275JR | Unit |
|---|---|---|---|
| tensile_strength | 310–440 | 410–560 | MPa |
| yield_strength | 180–220 | ≥ 275 | MPa |
| elongation | 28–35 | ≥ 23 | % |
Compatibility Assessment
C10E and S275JR 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 S275JR?
C10E and S275JR have a 52% composition overlap. They are generally not directly interchangeable.
Can I replace C10E with S275JR?
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 S275JR?
The main differences are in the following elements: overall alloying content. C10E is a Carbon Steel grade, while S275JR 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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