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NF A70-2 vs NF E28-4
Property comparison of NF A70-2 and NF E28-4, both carbon steel.
| Property | NF A70-2 | NF E28-4 | Difference |
|---|---|---|---|
| Yield strength | 365 MPa | 255 MPa | -30% |
| Tensile strength | 690 MPa | 400 MPa | -42% |
| Elongation | 10 % | 23 % | +130% |
| 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 | 66.5 W/m·K | 66.5 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 NF E28-4 relative to NF A70-2. Values are taken from the representative row of each material; both materials may have multiple heat treatments or conditions on their individual pages.
Identification
NF A70-2
- standard
- NF
NF E28-4
- standard
- NF
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