Steel 12Ch7G3SL GOST 977-88 vs Steel 12Ch8VF GOST 20072-74
Property comparison of Steel 12Ch7G3SL GOST 977-88 and Steel 12Ch8VF GOST 20072-74, both carbon steel.
| Property | Steel 12Ch7G3SL GOST 977-88 | Steel 12Ch8VF GOST 20072-74 | Difference |
|---|---|---|---|
| Yield strength | 1,079 MPa | 165 MPa | -85% |
| Tensile strength | 1,324 MPa | 390 MPa | -71% |
| Elongation | 9 % | 22 % | +144% |
| Elastic modulus | 200,000 MPa | 200,000 MPa | 0% |
| Shear modulus | 77,000 MPa | 77,000 MPa | 0% |
| Poisson ratio | 0.3 | 0.3 | 0% |
| Density | 7,820 kg/m³ | 7,850 kg/m³ | 0% |
| Thermal conductivity | 51.9 W/m·K | 51.9 W/m·K | 0% |
| Specific heat | 455 J/kg·K | 455 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 12Ch8VF GOST 20072-74 relative to Steel 12Ch7G3SL GOST 977-88. 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
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