6061 Aluminum vs. 6351 Aluminum
Both 6061 aluminum and 6351 aluminum are aluminum alloys. Their average alloy composition is basically identical. There are 30 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.
For each property being compared, the top bar is 6061 aluminum and the bottom bar is 6351 aluminum.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 69 | |
| 69 |
| Elongation at Break, % | 3.4 to 20 | |
| 7.8 to 18 |
| Fatigue Strength, MPa | 58 to 110 | |
| 79 to 130 |
| Poisson's Ratio | 0.33 | |
| 0.33 |
| Shear Modulus, GPa | 26 | |
| 26 |
| Shear Strength, MPa | 84 to 210 | |
| 84 to 200 |
| Tensile Strength: Ultimate (UTS), MPa | 130 to 410 | |
| 140 to 310 |
| Tensile Strength: Yield (Proof), MPa | 76 to 370 | |
| 95 to 270 |
Thermal Properties
| Latent Heat of Fusion, J/g | 400 | |
| 410 |
| Maximum Temperature: Mechanical, °C | 170 | |
| 160 |
| Melting Completion (Liquidus), °C | 650 | |
| 650 |
| Melting Onset (Solidus), °C | 580 | |
| 570 |
| Specific Heat Capacity, J/kg-K | 900 | |
| 900 |
| Thermal Conductivity, W/m-K | 170 | |
| 180 |
| Thermal Expansion, µm/m-K | 24 | |
| 23 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 43 | |
| 46 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 140 | |
| 150 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 9.5 | |
| 9.5 |
| Density, g/cm3 | 2.7 | |
| 2.7 |
| Embodied Carbon, kg CO2/kg material | 8.3 | |
| 8.3 |
| Embodied Energy, MJ/kg | 150 | |
| 150 |
| Embodied Water, L/kg | 1180 | |
| 1180 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 3.8 to 81 | |
| 20 to 38 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 42 to 1000 | |
| 65 to 540 |
| Stiffness to Weight: Axial, points | 14 | |
| 14 |
| Stiffness to Weight: Bending, points | 50 | |
| 50 |
| Strength to Weight: Axial, points | 13 to 42 | |
| 14 to 32 |
| Strength to Weight: Bending, points | 21 to 45 | |
| 22 to 38 |
| Thermal Diffusivity, mm2/s | 68 | |
| 72 |
| Thermal Shock Resistance, points | 5.7 to 18 | |
| 6.1 to 14 |
Alloy Composition
| Aluminum (Al), % | 95.9 to 98.6 | |
| 96 to 98.5 |
| Chromium (Cr), % | 0.040 to 0.35 | |
| 0 |
| Copper (Cu), % | 0.15 to 0.4 | |
| 0 to 0.1 |
| Iron (Fe), % | 0 to 0.7 | |
| 0 to 0.5 |
| Magnesium (Mg), % | 0.8 to 1.2 | |
| 0.4 to 0.8 |
| Manganese (Mn), % | 0 to 0.15 | |
| 0.4 to 0.8 |
| Silicon (Si), % | 0.4 to 0.8 | |
| 0.7 to 1.3 |
| Titanium (Ti), % | 0 to 0.15 | |
| 0 to 0.2 |
| Zinc (Zn), % | 0 to 0.25 | |
| 0 to 0.2 |
| Residuals, % | 0 | |
| 0 to 0.15 |