C15E
1.1141Low-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.
International equivalents
| Flag | Standard | Country | Grade | Number | Match |
|---|---|---|---|---|---|
| 🇺🇸 | AISI | USA | AISI 1015 | — | REF |
| 🇪🇺 | EN | Europe | C15E / 1.1141 | 1.1141 | 100% |
Sources: ASTM A29, EN 10084
Chemical composition comparison (wt%)
Side-by-side: C15E (EN 10084) vs C15E / 1.1141 (EN) (EN 10084)
| Element | C15E (EN 10084) | C15E / 1.1141 (EN) | Overlap |
|---|---|---|---|
| C | — | 0.12–0.18% | — |
| Si | — | 0–0.4% | — |
Mechanical properties
Compatibility verdict
C15E and C15E / 1.1141: 100% composition match
Related materials
C45
1.0503Medium carbon unalloyed quality steel. Good machinability and moderate strength after heat treatment. Widely used for shafts, spindles, pins, studs, and general machine parts.
S355JR
1.0045High-strength low-alloy structural steel with minimum yield strength of 355 MPa. Standard grade for bridges, buildings, cranes, and general structural applications. Impact tested at +20°C (JR).
S235JR
1.0038General-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.
Export this comparison as PDF
Professional datasheet with equivalents, composition, and properties. Ready for your QM documentation.
Download PDF — €4.90Included with PRO subscription