Material datasheet
Density and Chemical Composition of Ст45 / C45 Steel
Reference values for Ст45 / C45: typical density used in mass estimates, indicative composition limits (mass %), and common naming equivalents. Always confirm against your supplier certificate.
Typical density (calculator)
7,850
kg/m³
International equivalents
- C45 / 1.0503
- SAE 1045
- 45# (CN)
Chemical composition (reference, mass %)
| Element | Typical limits |
|---|---|
| C | 0.42–0.5 |
| Mn | 0.5–0.8 |
| Si | 0.17–0.37 |
| S | ≤0.04 |
| P | ≤0.035 |
| Cr | ≤0.25 |
| Ni | ≤0.3 |
| Cu | ≤0.3 |
| Fe | Balance |
Composition bands are simplified summaries for orientation; they are not a substitute for EN, ASTM, GOST, or mill limits on your order.