4130 vs SAE 4150 Carbon Steel (Normalized at 870 °C (1600 °F))
Property comparison of 4130 and SAE 4150 Carbon Steel (Normalized at 870 °C (1600 °F)), both carbon steel.
| Property | 4130 | SAE 4150 Carbon Steel (Normalized at 870 °C (1600 °F)) | Difference |
|---|---|---|---|
| Yield strength | 460 MPa | 731 MPa | +59% |
| Tensile strength | 560 MPa | 116 MPa | -79% |
| Elongation | 21.5 % | 11.7 % | -46% |
| Elastic modulus | 200,000 MPa | 200,000 MPa | 0% |
| Shear modulus | 76,923 MPa | 76,923 MPa | 0% |
| Poisson ratio | 0.3 | 0.3 | 0% |
| Density | 7,850 kg/m³ | 7,850 kg/m³ | 0% |
| Brinell hardness | 217 HB | 321 HB | +48% |
| Thermal conductivity | 51.9 W/m·K | 51.9 W/m·K | 0% |
| Specific heat | 460 J/kg·K | 465 J/kg·K | +1% |
| Coefficient of thermal expansion | 0.000012 1/K | 0.000012 1/K | 0% |
| Melting point | 1,480 °C | 1,480 °C | 0% |
| Reduction in area | 59.6 % | 30.8 % | -48% |
Difference is SAE 4150 Carbon Steel (Normalized at 870 °C (1600 °F)) relative to 4130. Values are taken from the representative row of each material; both materials may have multiple heat treatments or conditions on their individual pages.
Identification
- grade
- 4130
- standard
- SAE
- heat treatment
- Annealed at 865 °C (1585 T)
- grade
- 4150
- standard
- SAE
- heat treatment
- Normalized at 870 °C (1600 °F)
About AISI/SAE 41xx chromium-molybdenum steels
41xx grades are low-alloy steels with chromium and molybdenum. They harden deeper and tougher than plain carbon grades and weld reasonably well. 4130 is the standard for aircraft tubing and pressure vessels; 4140 covers shafts, gears, and high-strength fasteners.
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