8021 Aluminum vs. EN 1.4110 Stainless Steel
8021 aluminum belongs to the aluminum alloys classification, while EN 1.4110 stainless steel belongs to the iron alloys. There are 29 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown. Please note that the two materials have significantly dissimilar densities. This means that additional care is required when interpreting the data, because some material properties are based on units of mass, while others are based on units of area or volume.
For each property being compared, the top bar is 8021 aluminum and the bottom bar is EN 1.4110 stainless steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 70 | |
| 190 |
| Elongation at Break, % | 2.3 | |
| 11 to 14 |
| Fatigue Strength, MPa | 61 | |
| 250 to 730 |
| Poisson's Ratio | 0.33 | |
| 0.28 |
| Shear Modulus, GPa | 26 | |
| 76 |
| Tensile Strength: Ultimate (UTS), MPa | 160 | |
| 770 to 1720 |
| Tensile Strength: Yield (Proof), MPa | 130 | |
| 430 to 1330 |
Thermal Properties
| Latent Heat of Fusion, J/g | 400 | |
| 280 |
| Maximum Temperature: Mechanical, °C | 170 | |
| 790 |
| Melting Completion (Liquidus), °C | 650 | |
| 1440 |
| Melting Onset (Solidus), °C | 640 | |
| 1400 |
| Specific Heat Capacity, J/kg-K | 900 | |
| 480 |
| Thermal Conductivity, W/m-K | 220 | |
| 30 |
| Thermal Expansion, µm/m-K | 23 | |
| 11 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 56 | |
| 2.8 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 180 | |
| 3.2 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 9.0 | |
| 8.0 |
| Density, g/cm3 | 2.8 | |
| 7.7 |
| Embodied Carbon, kg CO2/kg material | 8.1 | |
| 2.3 |
| Embodied Energy, MJ/kg | 150 | |
| 33 |
| Embodied Water, L/kg | 1180 | |
| 110 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 3.4 | |
| 90 to 180 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 130 | |
| 480 to 4550 |
| Stiffness to Weight: Axial, points | 14 | |
| 14 |
| Stiffness to Weight: Bending, points | 49 | |
| 25 |
| Strength to Weight: Axial, points | 16 | |
| 28 to 62 |
| Strength to Weight: Bending, points | 23 | |
| 24 to 41 |
| Thermal Diffusivity, mm2/s | 88 | |
| 8.1 |
| Thermal Shock Resistance, points | 7.0 | |
| 27 to 60 |
Alloy Composition
| Aluminum (Al), % | 98 to 98.8 | |
| 0 |
| Carbon (C), % | 0 | |
| 0.48 to 0.6 |
| Chromium (Cr), % | 0 | |
| 13 to 15 |
| Copper (Cu), % | 0 to 0.050 | |
| 0 |
| Iron (Fe), % | 1.2 to 1.7 | |
| 81.4 to 86 |
| Manganese (Mn), % | 0 | |
| 0 to 1.0 |
| Molybdenum (Mo), % | 0 | |
| 0.5 to 0.8 |
| Phosphorus (P), % | 0 | |
| 0 to 0.040 |
| Silicon (Si), % | 0 to 0.15 | |
| 0 to 1.0 |
| Sulfur (S), % | 0 | |
| 0 to 0.015 |
| Vanadium (V), % | 0 | |
| 0 to 0.15 |
| Residuals, % | 0 to 0.15 | |
| 0 |