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BS 40B vs BS 410S21
Property comparison of BS 40B and BS 410S21, both carbon steel.
| Property | BS 40B | BS 410S21 | Difference |
|---|---|---|---|
| Yield strength | 225 MPa | 340 MPa | +51% |
| Tensile strength | 340 MPa | 550 MPa | +62% |
| Elongation | 26 % | 15 % | -42% |
| 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 | 65.4 W/m·K | 51.9 W/m·K | -21% |
| Specific heat | 457 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 410S21 relative to BS 40B. 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 40B
- standard
- BS
BS 410S21
- standard
- BS
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