EN 1.6771 Steel vs. 771.0 Aluminum
EN 1.6771 steel belongs to the iron alloys classification, while 771.0 aluminum belongs to the aluminum alloys. There are 30 material properties with values for both materials. Properties with values for just one material (3, 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 EN 1.6771 steel and the bottom bar is 771.0 aluminum.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 280 to 350 | |
| 85 to 120 |
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 70 |
| Elongation at Break, % | 8.0 to 8.7 | |
| 1.7 to 6.5 |
| Fatigue Strength, MPa | 440 to 680 | |
| 92 to 180 |
| Poisson's Ratio | 0.29 | |
| 0.32 |
| Shear Modulus, GPa | 73 | |
| 26 |
| Tensile Strength: Ultimate (UTS), MPa | 930 to 1180 | |
| 250 to 370 |
| Tensile Strength: Yield (Proof), MPa | 740 to 1140 | |
| 210 to 350 |
Thermal Properties
| Latent Heat of Fusion, J/g | 250 | |
| 380 |
| Maximum Temperature: Mechanical, °C | 440 | |
| 180 |
| Melting Completion (Liquidus), °C | 1460 | |
| 630 |
| Melting Onset (Solidus), °C | 1420 | |
| 620 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 870 |
| Thermal Conductivity, W/m-K | 46 | |
| 140 to 150 |
| Thermal Expansion, µm/m-K | 13 | |
| 24 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 8.0 | |
| 27 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 9.2 | |
| 82 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 5.0 | |
| 9.5 |
| Density, g/cm3 | 7.9 | |
| 3.0 |
| Embodied Carbon, kg CO2/kg material | 1.9 | |
| 8.0 |
| Embodied Energy, MJ/kg | 25 | |
| 150 |
| Embodied Water, L/kg | 58 | |
| 1130 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 75 to 93 | |
| 4.4 to 20 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 1460 to 3450 | |
| 310 to 900 |
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 24 | |
| 46 |
| Strength to Weight: Axial, points | 33 to 41 | |
| 23 to 35 |
| Strength to Weight: Bending, points | 27 to 31 | |
| 29 to 39 |
| Thermal Diffusivity, mm2/s | 13 | |
| 54 to 58 |
| Thermal Shock Resistance, points | 27 to 35 | |
| 11 to 16 |
Alloy Composition
| Aluminum (Al), % | 0 | |
| 90.5 to 92.5 |
| Carbon (C), % | 0.27 to 0.33 | |
| 0 |
| Chromium (Cr), % | 0.8 to 1.2 | |
| 0.060 to 0.2 |
| Copper (Cu), % | 0 | |
| 0 to 0.1 |
| Iron (Fe), % | 92.2 to 95 | |
| 0 to 0.15 |
| Magnesium (Mg), % | 0 | |
| 0.8 to 1.0 |
| Manganese (Mn), % | 0.6 to 1.0 | |
| 0 to 0.1 |
| Molybdenum (Mo), % | 0.3 to 0.6 | |
| 0 |
| Nickel (Ni), % | 3.0 to 4.0 | |
| 0 |
| Phosphorus (P), % | 0 to 0.030 | |
| 0 |
| Silicon (Si), % | 0 to 0.6 | |
| 0 to 0.15 |
| Sulfur (S), % | 0 to 0.020 | |
| 0 |
| Titanium (Ti), % | 0 | |
| 0.1 to 0.2 |
| Zinc (Zn), % | 0 | |
| 6.5 to 7.5 |
| Residuals, % | 0 | |
| 0 to 0.15 |