EN AC-21100 Aluminum vs. EN AC-51200 Aluminum
Both EN AC-21100 aluminum and EN AC-51200 aluminum are aluminum alloys. They have 89% of their average alloy composition in common.
For each property being compared, the top bar is EN AC-21100 aluminum and the bottom bar is EN AC-51200 aluminum.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 100 to 110 | |
| 80 |
| Elastic (Young's, Tensile) Modulus, GPa | 71 | |
| 67 |
| Elongation at Break, % | 6.2 to 7.3 | |
| 1.1 |
| Fatigue Strength, MPa | 79 to 87 | |
| 100 |
| Poisson's Ratio | 0.33 | |
| 0.33 |
| Shear Modulus, GPa | 27 | |
| 25 |
| Tensile Strength: Ultimate (UTS), MPa | 340 to 350 | |
| 220 |
| Tensile Strength: Yield (Proof), MPa | 210 to 240 | |
| 150 |
Thermal Properties
| Latent Heat of Fusion, J/g | 390 | |
| 410 |
| Maximum Temperature: Mechanical, °C | 170 | |
| 170 |
| Melting Completion (Liquidus), °C | 670 | |
| 640 |
| Melting Onset (Solidus), °C | 550 | |
| 570 |
| Specific Heat Capacity, J/kg-K | 880 | |
| 910 |
| Thermal Conductivity, W/m-K | 130 | |
| 92 |
| Thermal Expansion, µm/m-K | 23 | |
| 23 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 34 | |
| 22 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 100 | |
| 74 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 11 | |
| 9.5 |
| Density, g/cm3 | 3.0 | |
| 2.6 |
| Embodied Carbon, kg CO2/kg material | 8.0 | |
| 9.6 |
| Embodied Energy, MJ/kg | 150 | |
| 150 |
| Embodied Water, L/kg | 1150 | |
| 1150 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 19 to 21 | |
| 2.2 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 300 to 400 | |
| 160 |
| Stiffness to Weight: Axial, points | 13 | |
| 14 |
| Stiffness to Weight: Bending, points | 46 | |
| 51 |
| Strength to Weight: Axial, points | 31 to 33 | |
| 24 |
| Strength to Weight: Bending, points | 36 to 37 | |
| 31 |
| Thermal Diffusivity, mm2/s | 48 | |
| 39 |
| Thermal Shock Resistance, points | 15 | |
| 10 |
Alloy Composition
| Aluminum (Al), % | 93.4 to 95.7 | |
| 84.5 to 92 |
| Copper (Cu), % | 4.2 to 5.2 | |
| 0 to 0.1 |
| Iron (Fe), % | 0 to 0.19 | |
| 0 to 1.0 |
| Lead (Pb), % | 0 | |
| 0 to 0.1 |
| Magnesium (Mg), % | 0 | |
| 8.0 to 10.5 |
| Manganese (Mn), % | 0 to 0.55 | |
| 0 to 0.55 |
| Nickel (Ni), % | 0 | |
| 0 to 0.1 |
| Silicon (Si), % | 0 to 0.18 | |
| 0 to 2.5 |
| Tin (Sn), % | 0 | |
| 0 to 0.1 |
| Titanium (Ti), % | 0.15 to 0.3 | |
| 0 to 0.2 |
| Zinc (Zn), % | 0 to 0.070 | |
| 0 to 0.25 |
| Residuals, % | 0 | |
| 0 to 0.15 |