C22E
1.1151Low-carbon unalloyed steel for case hardening and general engineering — 0.17-0.24% C. After carburizing: surface HRC 55-60, soft tough core. Much cheaper than alloy case-hardening steels (16MnCr5, 20MnCr5). Modern designation for Ck22. Used for pins, bolts, levers, lightly loaded gears, and any carburized part where alloy additions are not justified. Also used as cold-heading wire.
International equivalents
| Flag | Standard | Country | Grade | Number | Match |
|---|---|---|---|---|---|
| 🇺🇸 | AISI | USA | AISI 1022 | — | REF |
| 🇪🇺 | EN | Europe | C22E / 1.1151 | 1.1151 | 100% |
Sources: ASTM A29, EN 10083-2
Chemical composition comparison (wt%)
Side-by-side: C22E (EN 10083-2) vs C22E / 1.1151 (EN) (EN 10083-2)
| Element | C22E (EN 10083-2) | C22E / 1.1151 (EN) | Overlap |
|---|---|---|---|
| C | — | 0.17–0.24% | — |
| Si | — | 0–0.4% | — |
Mechanical properties
Compatibility verdict
C22E and C22E / 1.1151: 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