EN AC-21100 Aluminum vs. 7204 Aluminum
Both EN AC-21100 aluminum and 7204 aluminum are aluminum alloys. They have a moderately high 93% of their average alloy composition in common. There are 29 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.
For each property being compared, the top bar is EN AC-21100 aluminum and the bottom bar is 7204 aluminum.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 71 | |
| 70 |
| Elongation at Break, % | 6.2 to 7.3 | |
| 11 to 13 |
| Fatigue Strength, MPa | 79 to 87 | |
| 110 to 130 |
| Poisson's Ratio | 0.33 | |
| 0.33 |
| Shear Modulus, GPa | 27 | |
| 26 |
| Tensile Strength: Ultimate (UTS), MPa | 340 to 350 | |
| 220 to 380 |
| Tensile Strength: Yield (Proof), MPa | 210 to 240 | |
| 120 to 310 |
Thermal Properties
| Latent Heat of Fusion, J/g | 390 | |
| 380 |
| Maximum Temperature: Mechanical, °C | 170 | |
| 210 |
| Melting Completion (Liquidus), °C | 670 | |
| 640 |
| Melting Onset (Solidus), °C | 550 | |
| 520 |
| Specific Heat Capacity, J/kg-K | 880 | |
| 880 |
| Thermal Conductivity, W/m-K | 130 | |
| 150 |
| Thermal Expansion, µm/m-K | 23 | |
| 24 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 34 | |
| 39 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 100 | |
| 120 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 11 | |
| 9.5 |
| Density, g/cm3 | 3.0 | |
| 2.9 |
| Embodied Carbon, kg CO2/kg material | 8.0 | |
| 8.4 |
| Embodied Energy, MJ/kg | 150 | |
| 150 |
| Embodied Water, L/kg | 1150 | |
| 1140 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 19 to 21 | |
| 25 to 40 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 300 to 400 | |
| 110 to 710 |
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 46 | |
| 47 |
| Strength to Weight: Axial, points | 31 to 33 | |
| 21 to 36 |
| Strength to Weight: Bending, points | 36 to 37 | |
| 28 to 40 |
| Thermal Diffusivity, mm2/s | 48 | |
| 58 |
| Thermal Shock Resistance, points | 15 | |
| 9.4 to 16 |
Alloy Composition
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| Aluminum (Al), % | 93.4 to 95.7 | |
| 90.5 to 94.8 |
| Chromium (Cr), % | 0 | |
| 0 to 0.3 |
| Copper (Cu), % | 4.2 to 5.2 | |
| 0 to 0.2 |
| Iron (Fe), % | 0 to 0.19 | |
| 0 to 0.35 |
| Magnesium (Mg), % | 0 | |
| 1.0 to 2.0 |
| Manganese (Mn), % | 0 to 0.55 | |
| 0.2 to 0.7 |
| Silicon (Si), % | 0 to 0.18 | |
| 0 to 0.3 |
| Titanium (Ti), % | 0.15 to 0.3 | |
| 0 to 0.2 |
| Vanadium (V), % | 0 | |
| 0 to 0.1 |
| Zinc (Zn), % | 0 to 0.070 | |
| 4.0 to 5.0 |
| Zirconium (Zr), % | 0 | |
| 0 to 0.25 |
| Residuals, % | 0 to 0.1 | |
| 0 to 0.15 |