AISI 410 Stainless Steel vs. 7021 Aluminum
AISI 410 stainless steel belongs to the iron alloys classification, while 7021 aluminum belongs to the aluminum alloys. There are 30 material properties with values for both materials. Properties with values for just one material (5, 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 AISI 410 stainless steel and the bottom bar is 7021 aluminum.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 69 |
| Elongation at Break, % | 16 to 22 | |
| 9.4 |
| Fatigue Strength, MPa | 190 to 350 | |
| 150 |
| Poisson's Ratio | 0.28 | |
| 0.32 |
| Shear Modulus, GPa | 76 | |
| 26 |
| Shear Strength, MPa | 330 to 470 | |
| 270 |
| Tensile Strength: Ultimate (UTS), MPa | 520 to 770 | |
| 460 |
| Tensile Strength: Yield (Proof), MPa | 290 to 580 | |
| 390 |
Thermal Properties
| Latent Heat of Fusion, J/g | 270 | |
| 380 |
| Maximum Temperature: Mechanical, °C | 710 | |
| 200 |
| Melting Completion (Liquidus), °C | 1530 | |
| 630 |
| Melting Onset (Solidus), °C | 1480 | |
| 510 |
| Specific Heat Capacity, J/kg-K | 480 | |
| 870 |
| Thermal Conductivity, W/m-K | 30 | |
| 150 |
| Thermal Expansion, µm/m-K | 11 | |
| 24 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 2.9 | |
| 38 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 3.3 | |
| 120 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 7.0 | |
| 9.5 |
| Density, g/cm3 | 7.7 | |
| 2.9 |
| Embodied Carbon, kg CO2/kg material | 1.9 | |
| 8.3 |
| Embodied Energy, MJ/kg | 27 | |
| 150 |
| Embodied Water, L/kg | 100 | |
| 1140 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 97 to 110 | |
| 41 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 210 to 860 | |
| 1110 |
| Stiffness to Weight: Axial, points | 14 | |
| 13 |
| Stiffness to Weight: Bending, points | 25 | |
| 47 |
| Strength to Weight: Axial, points | 19 to 28 | |
| 44 |
| Strength to Weight: Bending, points | 19 to 24 | |
| 45 |
| Thermal Diffusivity, mm2/s | 8.1 | |
| 59 |
| Thermal Shock Resistance, points | 18 to 26 | |
| 20 |
Alloy Composition
| Aluminum (Al), % | 0 | |
| 90.7 to 93.7 |
| Carbon (C), % | 0.080 to 0.15 | |
| 0 |
| Chromium (Cr), % | 11.5 to 13.5 | |
| 0 to 0.050 |
| Copper (Cu), % | 0 | |
| 0 to 0.25 |
| Iron (Fe), % | 83.5 to 88.4 | |
| 0 to 0.4 |
| Magnesium (Mg), % | 0 | |
| 1.2 to 1.8 |
| Manganese (Mn), % | 0 to 1.0 | |
| 0 to 0.1 |
| Nickel (Ni), % | 0 to 0.75 | |
| 0 |
| Phosphorus (P), % | 0 to 0.040 | |
| 0 |
| Silicon (Si), % | 0 to 1.0 | |
| 0 to 0.25 |
| Sulfur (S), % | 0 to 0.030 | |
| 0 |
| Titanium (Ti), % | 0 | |
| 0 to 0.1 |
| Zinc (Zn), % | 0 | |
| 5.0 to 6.0 |
| Zirconium (Zr), % | 0 | |
| 0.080 to 0.18 |
| Residuals, % | 0 | |
| 0 to 0.15 |