Steel 38ChA GOST 1577-93 vs Steel 40 GOST 1050-88
Property comparison of Steel 38ChA GOST 1577-93 and Steel 40 GOST 1050-88, both carbon steel.
| Property | Steel 38ChA GOST 1577-93 | Steel 40 GOST 1050-88 | Difference |
|---|---|---|---|
| Yield strength | 630 MPa | 330 MPa | -48% |
| Tensile strength | 925 MPa | 510 MPa | -45% |
| Elongation | 13 % | 14 % | +8% |
| 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% |
| Brinell hardness | 207 HB | 197 HB | -5% |
| 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 1577-93. 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
- Annealing or high tempering
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