Steel 12Ch18N9T GOST 5949-75 vs Steel 12Ch1MF GOST 20072-74
Property comparison of Steel 12Ch18N9T GOST 5949-75 and Steel 12Ch1MF GOST 20072-74, both carbon steel.
| Property | Steel 12Ch18N9T GOST 5949-75 | Steel 12Ch1MF GOST 20072-74 | Difference |
|---|---|---|---|
| Yield strength | 196 MPa | 255 MPa | +30% |
| Tensile strength | 540 MPa | 470 MPa | -13% |
| Elongation | 40 % | 21 % | -48% |
| Elastic modulus | 195,000 MPa | 198,000 MPa | +2% |
| Shear modulus | 75,000 MPa | 77,000 MPa | +3% |
| Poisson ratio | 0.3 | 0.29 | -3% |
| Density | 7,900 kg/m³ | 7,800 kg/m³ | -1% |
| 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 12Ch1MF GOST 20072-74 relative to Steel 12Ch18N9T GOST 5949-75. 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
- standard
- GOST
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