7049A Aluminum vs. ASTM A572 Steel
7049A aluminum belongs to the aluminum alloys classification, while ASTM A572 steel belongs to the iron alloys. There are 30 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown. Please note that the two materials have significantly dissimilar densities. This means that additional care is required when interpreting the data, because some material properties are based on units of mass, while others are based on units of area or volume.
For each property being compared, the top bar is 7049A aluminum and the bottom bar is ASTM A572 steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 71 | |
| 190 |
| Elongation at Break, % | 5.0 to 5.7 | |
| 18 to 25 |
| Fatigue Strength, MPa | 180 | |
| 240 to 340 |
| Poisson's Ratio | 0.32 | |
| 0.29 |
| Shear Modulus, GPa | 27 | |
| 73 |
| Shear Strength, MPa | 340 to 350 | |
| 300 to 380 |
| Tensile Strength: Ultimate (UTS), MPa | 580 to 590 | |
| 470 to 620 |
| Tensile Strength: Yield (Proof), MPa | 500 to 530 | |
| 330 to 510 |
Thermal Properties
| Latent Heat of Fusion, J/g | 370 | |
| 250 |
| Maximum Temperature: Mechanical, °C | 200 | |
| 400 |
| Melting Completion (Liquidus), °C | 640 | |
| 1460 |
| Melting Onset (Solidus), °C | 430 | |
| 1420 |
| Specific Heat Capacity, J/kg-K | 850 | |
| 470 |
| Thermal Conductivity, W/m-K | 130 | |
| 51 |
| Thermal Expansion, µm/m-K | 24 | |
| 13 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 40 | |
| 7.2 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 120 | |
| 8.2 to 8.3 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 10 | |
| 2.0 |
| Density, g/cm3 | 3.1 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 8.2 | |
| 1.6 |
| Embodied Energy, MJ/kg | 150 | |
| 22 |
| Embodied Water, L/kg | 1100 | |
| 47 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 28 to 32 | |
| 100 to 110 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 1800 to 1990 | |
| 290 to 690 |
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 44 | |
| 24 |
| Strength to Weight: Axial, points | 52 to 53 | |
| 17 to 22 |
| Strength to Weight: Bending, points | 50 to 51 | |
| 17 to 21 |
| Thermal Diffusivity, mm2/s | 50 | |
| 14 |
| Thermal Shock Resistance, points | 25 | |
| 14 to 18 |