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EN C40 vs EN C45
Property comparison of EN C40 and EN C45, both carbon steel.
| Property | EN C40 | EN C45 | Difference |
|---|---|---|---|
| Yield strength | 400 MPa | 430 MPa | +8% |
| Tensile strength | 630 MPa | 650 MPa | +3% |
| Elongation | 18 % | 16 % | -11% |
| Elastic modulus | 206,000 MPa | 206,000 MPa | 0% |
| Shear modulus | 80,000 MPa | 80,000 MPa | 0% |
| Poisson ratio | 0.3 | 0.3 | 0% |
| Density | 7,860 kg/m³ | 7,860 kg/m³ | 0% |
| Thermal conductivity | 57.8 W/m·K | 55.9 W/m·K | -3% |
| Specific heat | 462 J/kg·K | 464 J/kg·K | 0% |
| Coefficient of thermal expansion | 0.000012 1/K | 0.000012 1/K | 0% |
| Melting point | 1,480 °C | 1,480 °C | 0% |
Difference is EN C45 relative to EN C40. Values are taken from the representative row of each material; both materials may have multiple heat treatments or conditions on their individual pages.
Identification
EN C40
- standard
- ISO
- heat treatment
- —
EN C45
- standard
- ISO
- heat treatment
- heat treated
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