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BS 251A58 vs BS 303S31
Property comparison of BS 251A58 and BS 303S31, both carbon steel.
| Property | BS 251A58 | BS 303S31 | Difference |
|---|---|---|---|
| Yield strength | 1,100 MPa | 190 MPa | -83% |
| Tensile strength | 1,300 MPa | 510 MPa | -61% |
| Elongation | 6 % | 40 % | +567% |
| Elastic modulus | 206,000 MPa | 206,000 MPa | 0% |
| Shear modulus | 80,000 MPa | 80,000 MPa | 0% |
| Poisson ratio | 0.3 | 0.3 | 0% |
| Density | 7,860 kg/m³ | 7,860 kg/m³ | 0% |
| Thermal conductivity | 51.9 W/m·K | 51.9 W/m·K | 0% |
| Specific heat | 466 J/kg·K | 460 J/kg·K | -1% |
| Coefficient of thermal expansion | 0.000012 1/K | 0.000012 1/K | 0% |
| Melting point | 1,480 °C | 1,480 °C | 0% |
Difference is BS 303S31 relative to BS 251A58. Values are taken from the representative row of each material; both materials may have multiple heat treatments or conditions on their individual pages.
Identification
BS 251A58
- standard
- BS
- heat treatment
- heat treated
BS 303S31
- standard
- BS
- heat treatment
- —
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