C355.0 Aluminum vs. 771.0 Aluminum
Both C355.0 aluminum and 771.0 aluminum are aluminum alloys. They have a moderately high 92% of their average alloy composition in common.
For each property being compared, the top bar is C355.0 aluminum and the bottom bar is 771.0 aluminum.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 86 to 90 | |
| 85 to 120 |
| Elastic (Young's, Tensile) Modulus, GPa | 70 | |
| 70 |
| Elongation at Break, % | 2.7 to 3.8 | |
| 1.7 to 6.5 |
| Fatigue Strength, MPa | 76 to 84 | |
| 92 to 180 |
| Poisson's Ratio | 0.33 | |
| 0.32 |
| Shear Modulus, GPa | 26 | |
| 26 |
| Tensile Strength: Ultimate (UTS), MPa | 290 to 310 | |
| 250 to 370 |
| Tensile Strength: Yield (Proof), MPa | 200 to 230 | |
| 210 to 350 |
Thermal Properties
| Latent Heat of Fusion, J/g | 470 | |
| 380 |
| Maximum Temperature: Mechanical, °C | 170 | |
| 180 |
| Melting Completion (Liquidus), °C | 620 | |
| 630 |
| Melting Onset (Solidus), °C | 570 | |
| 620 |
| Solidification (Pattern Maker's) Shrinkage, % | 1.3 | |
| 1.6 |
| Specific Heat Capacity, J/kg-K | 900 | |
| 870 |
| Thermal Conductivity, W/m-K | 150 | |
| 140 to 150 |
| Thermal Expansion, µm/m-K | 22 | |
| 24 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 39 | |
| 27 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 130 | |
| 82 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 9.5 | |
| 9.5 |
| Density, g/cm3 | 2.7 | |
| 3.0 |
| Embodied Carbon, kg CO2/kg material | 8.0 | |
| 8.0 |
| Embodied Energy, MJ/kg | 150 | |
| 150 |
| Embodied Water, L/kg | 1120 | |
| 1130 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 7.5 to 9.8 | |
| 4.4 to 20 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 290 to 380 | |
| 310 to 900 |
| Stiffness to Weight: Axial, points | 14 | |
| 13 |
| Stiffness to Weight: Bending, points | 51 | |
| 46 |
| Strength to Weight: Axial, points | 30 to 32 | |
| 23 to 35 |
| Strength to Weight: Bending, points | 36 to 37 | |
| 29 to 39 |
| Thermal Diffusivity, mm2/s | 60 | |
| 54 to 58 |
| Thermal Shock Resistance, points | 13 to 14 | |
| 11 to 16 |
Alloy Composition
| Aluminum (Al), % | 91.7 to 94.1 | |
| 90.5 to 92.5 |
| Chromium (Cr), % | 0 | |
| 0.060 to 0.2 |
| Copper (Cu), % | 1.0 to 1.5 | |
| 0 to 0.1 |
| Iron (Fe), % | 0 to 0.2 | |
| 0 to 0.15 |
| Magnesium (Mg), % | 0.4 to 0.6 | |
| 0.8 to 1.0 |
| Manganese (Mn), % | 0 to 0.1 | |
| 0 to 0.1 |
| Silicon (Si), % | 4.5 to 5.5 | |
| 0 to 0.15 |
| Titanium (Ti), % | 0 to 0.2 | |
| 0.1 to 0.2 |
| Zinc (Zn), % | 0 to 0.1 | |
| 6.5 to 7.5 |
| Residuals, % | 0 | |
| 0 to 0.15 |