6101B Aluminum vs. SAE-AISI 1045 Steel
6101B aluminum belongs to the aluminum alloys classification, while SAE-AISI 1045 steel belongs to the iron alloys. There are 30 material properties with values for both materials. Properties with values for just one material (2, 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 6101B aluminum and the bottom bar is SAE-AISI 1045 steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 68 | |
| 190 |
| Elongation at Break, % | 9.1 to 13 | |
| 13 to 18 |
| Fatigue Strength, MPa | 62 to 70 | |
| 220 to 370 |
| Poisson's Ratio | 0.33 | |
| 0.29 |
| Shear Modulus, GPa | 26 | |
| 72 |
| Shear Strength, MPa | 120 to 150 | |
| 380 to 410 |
| Tensile Strength: Ultimate (UTS), MPa | 190 to 250 | |
| 620 to 680 |
| Tensile Strength: Yield (Proof), MPa | 140 to 180 | |
| 330 to 580 |
Thermal Properties
| Latent Heat of Fusion, J/g | 400 | |
| 250 |
| Maximum Temperature: Mechanical, °C | 160 | |
| 400 |
| Melting Completion (Liquidus), °C | 640 | |
| 1460 |
| Melting Onset (Solidus), °C | 630 | |
| 1420 |
| Specific Heat Capacity, J/kg-K | 900 | |
| 470 |
| Thermal Conductivity, W/m-K | 210 | |
| 51 |
| Thermal Expansion, µm/m-K | 23 | |
| 12 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 57 | |
| 7.0 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 190 | |
| 8.1 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 9.5 | |
| 1.8 |
| Density, g/cm3 | 2.7 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 8.3 | |
| 1.4 |
| Embodied Energy, MJ/kg | 150 | |
| 18 |
| Embodied Water, L/kg | 1190 | |
| 46 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 20 to 23 | |
| 84 to 93 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 140 to 240 | |
| 300 to 900 |
| Stiffness to Weight: Axial, points | 14 | |
| 13 |
| Stiffness to Weight: Bending, points | 50 | |
| 24 |
| Strength to Weight: Axial, points | 20 to 25 | |
| 22 to 24 |
| Strength to Weight: Bending, points | 27 to 32 | |
| 21 to 22 |
| Thermal Diffusivity, mm2/s | 87 | |
| 14 |
| Thermal Shock Resistance, points | 8.5 to 11 | |
| 20 to 22 |
Alloy Composition
| Aluminum (Al), % | 98.2 to 99.3 | |
| 0 |
| Carbon (C), % | 0 | |
| 0.43 to 0.5 |
| Copper (Cu), % | 0 to 0.050 | |
| 0 |
| Iron (Fe), % | 0.1 to 0.3 | |
| 98.5 to 99 |
| Magnesium (Mg), % | 0.35 to 0.6 | |
| 0 |
| Manganese (Mn), % | 0 to 0.050 | |
| 0.6 to 0.9 |
| Phosphorus (P), % | 0 | |
| 0 to 0.040 |
| Silicon (Si), % | 0.3 to 0.6 | |
| 0 |
| Sulfur (S), % | 0 | |
| 0 to 0.050 |
| Zinc (Zn), % | 0 to 0.1 | |
| 0 |
| Residuals, % | 0 to 0.1 | |
| 0 |