C22
1.0402Low-medium carbon unalloyed steel. Good balance of strength, weldability, and formability. Used for lightly loaded shafts, bolts, levers, and general machine parts. Can be case-hardened for wear applications. Between C10 and C35 in properties.
International equivalents
| Flag | Standard | Country | Grade | Number | Match |
|---|---|---|---|---|---|
| 🇺🇸 | AISI | USA | AISI 1022 | G10220 | REF |
| 🇪🇺 | EN | Europe | C22 | 1.0402 | 100% |
| 🇯🇵 | JIS | Japan | S22C | — | 97% |
| 🇨🇳 | GB | China | 20 | — | 90% |
Sources: ASTM A29, EN 10083-2:2006, JIS G4051, GB/T 699
Chemical composition comparison (wt%)
Side-by-side: C22 (EN) (EN 10083-2:2006) vs S22C (JIS)
| Element | C22 (EN) | S22C (JIS) | Overlap |
|---|---|---|---|
| C | 0.17–0.24% | — | — |
| Si | 0–0.4% | — | — |
| Mn | 0.4–0.7% | — | — |
| P | 0–0.03% | — | — |
| S | 0–0.035% | — | — |
Mechanical properties
Normalized
| Property | Value | Unit |
|---|---|---|
| Tensile Strength | 410–540 | MPa |
| Yield Strength | ≥ 240 | MPa |
| Elongation | ≥ 22 | % |
| Elastic Modulus | ≥ 210 | GPa |
| Density | ≥ 7.85 | g/cm3 |
Heat treatment
| Process | Temperature | Medium | Holding Time | Notes |
|---|---|---|---|---|
| normalizing | 880–920 °C | air | min 2 min per mm | — |
| quenching | 860–900 °C | water | min 30 min | Oil for larger sections |
| tempering | 550–660 °C | air | min 60 min | — |
Compatibility verdict
C22 and S22C: 97% composition match
Close equivalents but NOT identical.
Related materials
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).
S690QL
1.8928High-strength quenched and tempered fine-grain structural steel with minimum yield strength of 690 MPa. Used for heavily loaded structures like mobile cranes, mining equipment, bridges, and pressure vessels.
S275JR
1.0044Medium-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).
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