EN AC-51200 Aluminum vs. EN AC-21200 Aluminum
Both EN AC-51200 aluminum and EN AC-21200 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-51200 aluminum and the bottom bar is EN AC-21200 aluminum.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 80 | |
| 120 to 130 |
| Elastic (Young's, Tensile) Modulus, GPa | 67 | |
| 71 |
| Elongation at Break, % | 1.1 | |
| 3.9 to 6.2 |
| Fatigue Strength, MPa | 100 | |
| 110 to 130 |
| Poisson's Ratio | 0.33 | |
| 0.33 |
| Shear Modulus, GPa | 25 | |
| 27 |
| Tensile Strength: Ultimate (UTS), MPa | 220 | |
| 410 to 440 |
| Tensile Strength: Yield (Proof), MPa | 150 | |
| 270 to 360 |
Thermal Properties
| Latent Heat of Fusion, J/g | 410 | |
| 390 |
| Maximum Temperature: Mechanical, °C | 170 | |
| 170 |
| Melting Completion (Liquidus), °C | 640 | |
| 660 |
| Melting Onset (Solidus), °C | 570 | |
| 550 |
| Specific Heat Capacity, J/kg-K | 910 | |
| 880 |
| Thermal Conductivity, W/m-K | 92 | |
| 130 |
| Thermal Expansion, µm/m-K | 23 | |
| 23 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 22 | |
| 34 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 74 | |
| 100 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 9.5 | |
| 10 |
| Density, g/cm3 | 2.6 | |
| 3.0 |
| Embodied Carbon, kg CO2/kg material | 9.6 | |
| 8.0 |
| Embodied Energy, MJ/kg | 150 | |
| 150 |
| Embodied Water, L/kg | 1150 | |
| 1150 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 2.2 | |
| 16 to 22 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 160 | |
| 500 to 930 |
| Stiffness to Weight: Axial, points | 14 | |
| 13 |
| Stiffness to Weight: Bending, points | 51 | |
| 46 |
| Strength to Weight: Axial, points | 24 | |
| 38 to 40 |
| Strength to Weight: Bending, points | 31 | |
| 41 to 43 |
| Thermal Diffusivity, mm2/s | 39 | |
| 49 |
| Thermal Shock Resistance, points | 10 | |
| 18 to 19 |
Alloy Composition
| Aluminum (Al), % | 84.5 to 92 | |
| 93.3 to 95.7 |
| Copper (Cu), % | 0 to 0.1 | |
| 4.0 to 5.0 |
| Iron (Fe), % | 0 to 1.0 | |
| 0 to 0.2 |
| Lead (Pb), % | 0 to 0.1 | |
| 0 to 0.030 |
| Magnesium (Mg), % | 8.0 to 10.5 | |
| 0.15 to 0.5 |
| Manganese (Mn), % | 0 to 0.55 | |
| 0.2 to 0.5 |
| Nickel (Ni), % | 0 to 0.1 | |
| 0 to 0.050 |
| Silicon (Si), % | 0 to 2.5 | |
| 0 to 0.1 |
| Tin (Sn), % | 0 to 0.1 | |
| 0 to 0.030 |
| Titanium (Ti), % | 0 to 0.2 | |
| 0 to 0.1 |
| Zinc (Zn), % | 0 to 0.25 | |
| 0 to 0.1 |
| Residuals, % | 0 | |
| 0 to 0.1 |