4006-T4 Aluminum vs. 7020-T4 Aluminum
Both 4006-T4 aluminum and 7020-T4 aluminum are aluminum alloys. Both are furnished in the T4 temper. They have a moderately high 94% of their average alloy composition in common.
For each property being compared, the top bar is 4006-T4 aluminum and the bottom bar is 7020-T4 aluminum.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 35 | |
| 92 |
| Elastic (Young's, Tensile) Modulus, GPa | 69 | |
| 70 |
| Elongation at Break, % | 20 | |
| 14 |
| Fatigue Strength, MPa | 35 | |
| 120 |
| Poisson's Ratio | 0.33 | |
| 0.33 |
| Shear Modulus, GPa | 26 | |
| 26 |
| Shear Strength, MPa | 86 | |
| 220 |
| Tensile Strength: Ultimate (UTS), MPa | 140 | |
| 360 |
| Tensile Strength: Yield (Proof), MPa | 62 | |
| 240 |
Thermal Properties
| Latent Heat of Fusion, J/g | 410 | |
| 380 |
| Maximum Temperature: Mechanical, °C | 160 | |
| 210 |
| Melting Completion (Liquidus), °C | 640 | |
| 650 |
| Melting Onset (Solidus), °C | 620 | |
| 610 |
| Specific Heat Capacity, J/kg-K | 900 | |
| 880 |
| Thermal Conductivity, W/m-K | 220 | |
| 150 |
| Thermal Expansion, µm/m-K | 23 | |
| 23 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 56 | |
| 39 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 180 | |
| 120 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 9.0 | |
| 9.5 |
| Density, g/cm3 | 2.7 | |
| 2.9 |
| Embodied Carbon, kg CO2/kg material | 8.1 | |
| 8.3 |
| Embodied Energy, MJ/kg | 150 | |
| 150 |
| Embodied Water, L/kg | 1180 | |
| 1150 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 22 | |
| 45 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 28 | |
| 410 |
| Stiffness to Weight: Axial, points | 14 | |
| 13 |
| Stiffness to Weight: Bending, points | 50 | |
| 47 |
| Strength to Weight: Axial, points | 14 | |
| 34 |
| Strength to Weight: Bending, points | 22 | |
| 39 |
| Thermal Diffusivity, mm2/s | 89 | |
| 59 |
| Thermal Shock Resistance, points | 6.1 | |
| 16 |
Alloy Composition
| Aluminum (Al), % | 97.4 to 98.7 | |
| 91.2 to 94.8 |
| Chromium (Cr), % | 0 to 0.2 | |
| 0.1 to 0.35 |
| Copper (Cu), % | 0 to 0.1 | |
| 0 to 0.2 |
| Iron (Fe), % | 0.5 to 0.8 | |
| 0 to 0.4 |
| Magnesium (Mg), % | 0 to 0.010 | |
| 1.0 to 1.4 |
| Manganese (Mn), % | 0 to 0.050 | |
| 0.050 to 0.5 |
| Silicon (Si), % | 0.8 to 1.2 | |
| 0 to 0.35 |
| Titanium (Ti), % | 0 | |
| 0 to 0.25 |
| Zinc (Zn), % | 0 to 0.050 | |
| 4.0 to 5.0 |
| Zirconium (Zr), % | 0 | |
| 0.080 to 0.25 |
| Residuals, % | 0 | |
| 0 to 0.15 |