4104 Aluminum vs. 4004 Aluminum
Both 4104 aluminum and 4004 aluminum are aluminum alloys. Both are furnished in the as-fabricated (no temper or treatment) condition. Their average alloy composition is basically identical.
For each property being compared, the top bar is 4104 aluminum and the bottom bar is 4004 aluminum.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 71 | |
| 71 |
| Elongation at Break, % | 2.4 | |
| 2.4 |
| Fatigue Strength, MPa | 42 | |
| 42 |
| Poisson's Ratio | 0.33 | |
| 0.33 |
| Shear Modulus, GPa | 27 | |
| 27 |
| Shear Strength, MPa | 63 | |
| 63 |
| Tensile Strength: Ultimate (UTS), MPa | 110 | |
| 110 |
| Tensile Strength: Yield (Proof), MPa | 60 | |
| 60 |
Thermal Properties
| Brazing Temperature, °C | 590 to 600 | |
| 590 to 600 |
| Latent Heat of Fusion, J/g | 540 | |
| 540 |
| Maximum Temperature: Mechanical, °C | 160 | |
| 160 |
| Melting Completion (Liquidus), °C | 600 | |
| 600 |
| Melting Onset (Solidus), °C | 560 | |
| 560 |
| Specific Heat Capacity, J/kg-K | 900 | |
| 910 |
| Thermal Conductivity, W/m-K | 130 | |
| 130 |
| Thermal Expansion, µm/m-K | 22 | |
| 22 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 33 | |
| 33 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 120 | |
| 120 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 9.5 | |
| 9.5 |
| Density, g/cm3 | 2.6 | |
| 2.6 |
| Embodied Carbon, kg CO2/kg material | 8.0 | |
| 8.0 |
| Embodied Energy, MJ/kg | 150 | |
| 150 |
| Embodied Water, L/kg | 1080 | |
| 1070 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 2.3 | |
| 2.3 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 25 | |
| 25 |
| Stiffness to Weight: Axial, points | 15 | |
| 15 |
| Stiffness to Weight: Bending, points | 54 | |
| 54 |
| Strength to Weight: Axial, points | 12 | |
| 12 |
| Strength to Weight: Bending, points | 20 | |
| 20 |
| Thermal Diffusivity, mm2/s | 58 | |
| 58 |
| Thermal Shock Resistance, points | 5.1 | |
| 5.1 |
Alloy Composition
| Aluminum (Al), % | 85.8 to 90 | |
| 86 to 90 |
| Bismuth (Bi), % | 0.020 to 0.2 | |
| 0 |
| Copper (Cu), % | 0 to 0.25 | |
| 0 to 0.25 |
| Iron (Fe), % | 0 to 0.8 | |
| 0 to 0.8 |
| Magnesium (Mg), % | 1.0 to 2.0 | |
| 1.0 to 2.0 |
| Manganese (Mn), % | 0 to 0.1 | |
| 0 to 0.1 |
| Silicon (Si), % | 9.0 to 10.5 | |
| 9.0 to 10.5 |
| Zinc (Zn), % | 0 to 0.2 | |
| 0 to 0.2 |
| Residuals, % | 0 | |
| 0 to 0.15 |