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
Mechanical properties — Pro
Normalized
| Property | Value | Unit |
|---|---|---|
| Tensile Strength | ||
| Yield Strength | ||
| Elongation | ||
| Elastic Modulus | ||
| Density |
Case Hardened
| Property | Value | Unit |
|---|---|---|
| Hardness HRC |
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