Steel 15Ch GOST 4543-71 vs Steel 15Ch5M GOST 20072-74
Property comparison of Steel 15Ch GOST 4543-71 and Steel 15Ch5M GOST 20072-74, both carbon steel.
| Property | Steel 15Ch GOST 4543-71 | Steel 15Ch5M GOST 20072-74 | Difference |
|---|---|---|---|
| Yield strength | 490 MPa | 215 MPa | -56% |
| Tensile strength | 690 MPa | 390 MPa | -43% |
| Elongation | 12 % | 22 % | +83% |
| Elastic modulus | 206,000 MPa | 211,000 MPa | +2% |
| Shear modulus | 80,000 MPa | 82,000 MPa | +3% |
| Poisson ratio | 0.29 | 0.29 | 0% |
| Density | 7,860 kg/m³ | 7,750 kg/m³ | -1% |
| Thermal conductivity | 51.9 W/m·K | 51.9 W/m·K | 0% |
| Specific heat | 456 J/kg·K | 456 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 15Ch5M GOST 20072-74 relative to Steel 15Ch 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
- standard
- GOST
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