ASTM A302 Alloy Steel vs. SAE-AISI 1078 Steel
Both ASTM A302 alloy steel and SAE-AISI 1078 steel are iron alloys. There are 31 material properties with values for both materials. Properties with values for just one material (1, 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 1078 steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 180 to 190 | |
| 220 to 230 |
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 190 |
| Elongation at Break, % | 20 to 23 | |
| 11 to 14 |
| Fatigue Strength, MPa | 250 to 280 | |
| 270 to 350 |
| Poisson's Ratio | 0.29 | |
| 0.29 |
| Shear Modulus, GPa | 73 | |
| 72 |
| Shear Strength, MPa | 370 to 390 | |
| 440 to 470 |
| Tensile Strength: Ultimate (UTS), MPa | 590 to 620 | |
| 730 to 780 |
| Tensile Strength: Yield (Proof), MPa | 350 to 390 | |
| 430 to 570 |
Thermal Properties
| Latent Heat of Fusion, J/g | 250 | |
| 250 |
| Maximum Temperature: Mechanical, °C | 410 | |
| 400 |
| 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 | |
| 49 |
| Thermal Expansion, µm/m-K | 13 | |
| 11 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 7.2 to 7.4 | |
| 7.0 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 8.2 to 8.4 | |
| 8.1 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 2.4 to 3.0 | |
| 1.8 |
| Density, g/cm3 | 7.8 to 7.9 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 1.5 to 1.6 | |
| 1.4 |
| Embodied Energy, MJ/kg | 20 to 21 | |
| 18 |
| Embodied Water, L/kg | 48 to 50 | |
| 45 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 110 to 120 | |
| 77 to 90 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 330 to 410 | |
| 490 to 860 |
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 24 | |
| 24 |
| Strength to Weight: Axial, points | 21 to 22 | |
| 26 to 28 |
| Strength to Weight: Bending, points | 20 to 21 | |
| 23 to 24 |
| Thermal Diffusivity, mm2/s | 10 to 14 | |
| 13 |
| Thermal Shock Resistance, points | 17 to 18 | |
| 25 to 26 |