6061-T4 Aluminum vs. 6063-T4 Aluminum
Both 6061-T4 aluminum and 6063-T4 aluminum are aluminum alloys. Both are furnished in the T4 temper. They have a very high 99% of their average alloy composition in common.
For each property being compared, the top bar is 6061-T4 aluminum and the bottom bar is 6063-T4 aluminum.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 63 | |
| 50 |
| Elastic (Young's, Tensile) Modulus, GPa | 69 | |
| 68 |
| Elongation at Break, % | 18 | |
| 17 |
| Fatigue Strength, MPa | 96 | |
| 65 |
| Poisson's Ratio | 0.33 | |
| 0.33 |
| Shear Modulus, GPa | 26 | |
| 26 |
| Shear Strength, MPa | 170 | |
| 110 |
| Tensile Strength: Ultimate (UTS), MPa | 230 | |
| 160 |
| Tensile Strength: Yield (Proof), MPa | 130 | |
| 82 |
Thermal Properties
| Latent Heat of Fusion, J/g | 400 | |
| 400 |
| Maximum Temperature: Mechanical, °C | 170 | |
| 160 |
| Melting Completion (Liquidus), °C | 650 | |
| 650 |
| Melting Onset (Solidus), °C | 580 | |
| 620 |
| Specific Heat Capacity, J/kg-K | 900 | |
| 900 |
| Thermal Conductivity, W/m-K | 170 | |
| 200 |
| Thermal Expansion, µm/m-K | 24 | |
| 23 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 43 | |
| 49 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 140 | |
| 160 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 9.5 | |
| 9.5 |
| Calomel Potential, mV | -740 | |
| -740 |
| 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 | |
| 1190 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 36 | |
| 23 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 120 | |
| 49 |
| Stiffness to Weight: Axial, points | 14 | |
| 14 |
| Stiffness to Weight: Bending, points | 50 | |
| 50 |
| Strength to Weight: Axial, points | 23 | |
| 17 |
| Strength to Weight: Bending, points | 30 | |
| 24 |
| Thermal Diffusivity, mm2/s | 68 | |
| 81 |
| Thermal Shock Resistance, points | 10 | |
| 7.2 |
Alloy Composition
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| Aluminum (Al), % | 95.9 to 98.6 | |
| 97.5 to 99.4 |
| Chromium (Cr), % | 0.040 to 0.35 | |
| 0 to 0.1 |
| Copper (Cu), % | 0.15 to 0.4 | |
| 0 to 0.1 |
| Iron (Fe), % | 0 to 0.7 | |
| 0 to 0.35 |
| Magnesium (Mg), % | 0.8 to 1.2 | |
| 0.45 to 0.9 |
| Manganese (Mn), % | 0 to 0.15 | |
| 0 to 0.1 |
| Silicon (Si), % | 0.4 to 0.8 | |
| 0.2 to 0.6 |
| Titanium (Ti), % | 0 to 0.15 | |
| 0 to 0.1 |
| Zinc (Zn), % | 0 to 0.25 | |
| 0 to 0.1 |
| Residuals, % | 0 to 0.15 | |
| 0 to 0.15 |