Steel 40 GOST 1577-93 vs Steel 40Ch GOST 1577-93
Property comparison of Steel 40 GOST 1577-93 and Steel 40Ch GOST 1577-93, both carbon steel.
| Property | Steel 40 GOST 1577-93 | Steel 40Ch GOST 1577-93 | Difference |
|---|---|---|---|
| Yield strength | 400 MPa | 800 MPa | +100% |
| Tensile strength | 705 MPa | 1,100 MPa | +56% |
| Elongation | 18 % | 10 % | -44% |
| Elastic modulus | 206,000 MPa | 206,000 MPa | 0% |
| Shear modulus | 80,000 MPa | 80,000 MPa | 0% |
| Poisson ratio | 0.29 | 0.29 | 0% |
| Density | 7,860 kg/m³ | 7,860 kg/m³ | 0% |
| Brinell hardness | 187 HB | 217 HB | +16% |
| Thermal conductivity | 57.8 W/m·K | 51.9 W/m·K | -10% |
| 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 40Ch GOST 1577-93 relative to Steel 40 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
- Quenched and tempered
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