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Steel SAE 3140 vs Steel SAE 4042
Property comparison of Steel SAE 3140 and Steel SAE 4042, both carbon steel.
| Property | Steel SAE 3140 | Steel SAE 4042 | Difference |
|---|---|---|---|
| Yield strength | 600 MPa | 1,662 MPa | +177% |
| Tensile strength | 891 MPa | 1,800 MPa | +102% |
| Elongation | 19.7 % | 12 % | -39% |
| Elastic modulus | 207,000 MPa | 207,000 MPa | 0% |
| Shear modulus | 79,000 MPa | 79,000 MPa | 0% |
| Poisson ratio | 0.3 | 0.3 | 0% |
| Density | 7,860 kg/m³ | 7,860 kg/m³ | 0% |
| Brinell hardness | 262 HB | 516 HB | +97% |
| Thermal conductivity | 51.9 W/m·K | 57 W/m·K | +10% |
| Specific heat | 462 J/kg·K | 463 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 Steel SAE 4042 relative to Steel SAE 3140. Values are taken from the representative row of each material; both materials may have multiple heat treatments or conditions on their individual pages.
Identification
Steel SAE 3140
- standard
- ANSI
- heat treatment
- normalized
Steel SAE 4042
- standard
- ANSI
- heat treatment
- tempered at 400 F
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