Steel 40ChFA GOST 4543-71 vs Steel 40ChL GOST 977-88
Property comparison of Steel 40ChFA GOST 4543-71 and Steel 40ChL GOST 977-88, both carbon steel.
| Property | Steel 40ChFA GOST 4543-71 | Steel 40ChL GOST 977-88 | Difference |
|---|---|---|---|
| Yield strength | 1,300 MPa | 491 MPa | -62% |
| Tensile strength | 1,600 MPa | 638 MPa | -60% |
| Elastic modulus | 215,000 MPa | 219,000 MPa | +2% |
| Shear modulus | 83,000 MPa | 85,000 MPa | +2% |
| Poisson ratio | 0.3 | 0.29 | -3% |
| Density | 7,810 kg/m³ | 7,840 kg/m³ | 0% |
| Thermal conductivity | 51.9 W/m·K | 51.9 W/m·K | 0% |
| 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 40ChL GOST 977-88 relative to Steel 40ChFA GOST 4543-71. 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
- Quenching and cooling in the oil
- standard
- GOST
- heat treatment
- Quenching and cooling in the oil
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