Steel 55 GOST 1050-88 vs Steel 55 GOST 1577-93
Property comparison of Steel 55 GOST 1050-88 and Steel 55 GOST 1577-93, both carbon steel.
| Property | Steel 55 GOST 1050-88 | Steel 55 GOST 1577-93 | Difference |
|---|---|---|---|
| Yield strength | 375 MPa | 430 MPa | +15% |
| Tensile strength | 630 MPa | 775 MPa | +23% |
| Elongation | 13 % | 15 % | +15% |
| Elastic modulus | 210,000 MPa | 206,000 MPa | -2% |
| Shear modulus | 81,000 MPa | 80,000 MPa | -1% |
| Poisson ratio | 0.3 | 0.29 | -3% |
| Density | 7,820 kg/m³ | 7,860 kg/m³ | +1% |
| Brinell hardness | 255 HB | 217 HB | -15% |
| Thermal conductivity | 52.9 W/m·K | 52.9 W/m·K | 0% |
| Specific heat | 466 J/kg·K | 466 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 55 GOST 1577-93 relative to Steel 55 GOST 1050-88. 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
- normalized
- standard
- GOST
- heat treatment
- Quenched and tempered
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