ASTM A302 Alloy Steel vs. SAE-AISI S7 Steel
Both ASTM A302 alloy steel and SAE-AISI S7 steel are iron alloys. There are 23 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.
For each property being compared, the top bar is ASTM A302 alloy steel and the bottom bar is SAE-AISI S7 steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 190 |
| Poisson's Ratio | 0.29 | |
| 0.29 |
| Shear Modulus, GPa | 73 | |
| 74 |
| Tensile Strength: Ultimate (UTS), MPa | 590 to 620 | |
| 670 to 2030 |
Thermal Properties
| Latent Heat of Fusion, J/g | 250 | |
| 260 |
| Melting Completion (Liquidus), °C | 1460 | |
| 1460 |
| Melting Onset (Solidus), °C | 1420 | |
| 1420 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 470 |
| Thermal Conductivity, W/m-K | 39 to 51 | |
| 40 |
| Thermal Expansion, µm/m-K | 13 | |
| 12 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 7.2 to 7.4 | |
| 7.8 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 8.2 to 8.4 | |
| 9.0 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 2.4 to 3.0 | |
| 5.0 |
| Density, g/cm3 | 7.8 to 7.9 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 1.5 to 1.6 | |
| 2.3 |
| Embodied Energy, MJ/kg | 20 to 21 | |
| 31 |
| Embodied Water, L/kg | 48 to 50 | |
| 65 |
Common Calculations
| Stiffness to Weight: Axial, points | 13 | |
| 14 |
| Stiffness to Weight: Bending, points | 24 | |
| 25 |
| Strength to Weight: Axial, points | 21 to 22 | |
| 24 to 72 |
| Strength to Weight: Bending, points | 20 to 21 | |
| 22 to 46 |
| Thermal Diffusivity, mm2/s | 10 to 14 | |
| 11 |
| Thermal Shock Resistance, points | 17 to 18 | |
| 22 to 66 |