Steel 20 GOST 1577-93 vs Steel 20Ch GOST 4543-71
Property comparison of Steel 20 GOST 1577-93 and Steel 20Ch GOST 4543-71, both carbon steel.
| Property | Steel 20 GOST 1577-93 | Steel 20Ch GOST 4543-71 | Difference |
|---|---|---|---|
| Yield strength | 300 MPa | 500 MPa | +67% |
| Tensile strength | 575 MPa | 700 MPa | +22% |
| Elastic modulus | 206,000 MPa | 216,000 MPa | +5% |
| Shear modulus | 80,000 MPa | 83,000 MPa | +4% |
| Poisson ratio | 0.29 | 0.3 | +3% |
| Density | 7,860 kg/m³ | 7,830 kg/m³ | 0% |
| Thermal conductivity | 65.4 W/m·K | 51.9 W/m·K | -21% |
| Specific heat | 457 J/kg·K | 457 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 20Ch GOST 4543-71 relative to Steel 20 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
- Improved
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