Steel 38ChA GOST 4543-71 vs Steel 40 GOST 1050-88
Property comparison of Steel 38ChA GOST 4543-71 and Steel 40 GOST 1050-88, both carbon steel.
| Property | Steel 38ChA GOST 4543-71 | Steel 40 GOST 1050-88 | Difference |
|---|---|---|---|
| Yield strength | 785 MPa | 380 MPa | -52% |
| Tensile strength | 930 MPa | 610 MPa | -34% |
| Elongation | 12 % | 6 % | -50% |
| Elastic modulus | 206,000 MPa | 212,000 MPa | +3% |
| Shear modulus | 80,000 MPa | 82,000 MPa | +3% |
| Poisson ratio | 0.29 | 0.29 | 0% |
| Density | 7,860 kg/m³ | 7,850 kg/m³ | 0% |
| Thermal conductivity | 51.9 W/m·K | 57.8 W/m·K | +11% |
| Specific heat | 462 J/kg·K | 462 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 40 GOST 1050-88 relative to Steel 38ChA GOST 4543-71. Values are taken from the representative row of each material; both materials may have multiple heat treatments or conditions on their individual pages.
Identification
- standard
- GOST
- heat treatment
- Quenched and tempered
- standard
- GOST
- heat treatment
- Cold working
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