771.0-F Aluminum vs. A356.0-F Aluminum
Both 771.0-F aluminum and A356.0-F aluminum are aluminum alloys. Both are furnished in the as-fabricated (no temper or treatment) condition. They have a moderately high 92% of their average alloy composition in common.
For each property being compared, the top bar is 771.0-F aluminum and the bottom bar is A356.0-F aluminum.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 70 | |
| 70 |
| Elongation at Break, % | 2.6 | |
| 6.0 |
| Fatigue Strength, MPa | 180 | |
| 61 |
| Poisson's Ratio | 0.32 | |
| 0.33 |
| Shear Modulus, GPa | 26 | |
| 26 |
| Tensile Strength: Ultimate (UTS), MPa | 300 | |
| 160 |
| Tensile Strength: Yield (Proof), MPa | 250 | |
| 83 |
Thermal Properties
| Latent Heat of Fusion, J/g | 380 | |
| 500 |
| Maximum Temperature: Mechanical, °C | 180 | |
| 170 |
| Melting Completion (Liquidus), °C | 630 | |
| 610 |
| Melting Onset (Solidus), °C | 620 | |
| 570 |
| Solidification (Pattern Maker's) Shrinkage, % | 1.6 | |
| 1.3 |
| Specific Heat Capacity, J/kg-K | 870 | |
| 900 |
| Thermal Conductivity, W/m-K | 140 | |
| 150 |
| Thermal Expansion, µm/m-K | 24 | |
| 21 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 27 | |
| 40 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 82 | |
| 140 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 9.5 | |
| 9.5 |
| Density, g/cm3 | 3.0 | |
| 2.6 |
| Embodied Carbon, kg CO2/kg material | 8.0 | |
| 8.0 |
| Embodied Energy, MJ/kg | 150 | |
| 150 |
| Embodied Water, L/kg | 1130 | |
| 1110 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 7.5 | |
| 8.0 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 460 | |
| 49 |
| Stiffness to Weight: Axial, points | 13 | |
| 15 |
| Stiffness to Weight: Bending, points | 46 | |
| 53 |
| Strength to Weight: Axial, points | 28 | |
| 17 |
| Strength to Weight: Bending, points | 34 | |
| 25 |
| Thermal Diffusivity, mm2/s | 54 | |
| 64 |
| Thermal Shock Resistance, points | 13 | |
| 7.6 |
Alloy Composition
| Aluminum (Al), % | 90.5 to 92.5 | |
| 91.1 to 93.3 |
| Chromium (Cr), % | 0.060 to 0.2 | |
| 0 |
| Copper (Cu), % | 0 to 0.1 | |
| 0 to 0.2 |
| Iron (Fe), % | 0 to 0.15 | |
| 0 to 0.2 |
| Magnesium (Mg), % | 0.8 to 1.0 | |
| 0.25 to 0.45 |
| Manganese (Mn), % | 0 to 0.1 | |
| 0 to 0.1 |
| Silicon (Si), % | 0 to 0.15 | |
| 6.5 to 7.5 |
| Titanium (Ti), % | 0.1 to 0.2 | |
| 0 to 0.2 |
| Zinc (Zn), % | 6.5 to 7.5 | |
| 0 to 0.1 |
| Residuals, % | 0 | |
| 0 to 0.15 |