7021 Aluminum vs. N07041 Nickel
7021 aluminum belongs to the aluminum alloys classification, while N07041 nickel belongs to the nickel alloys. There are 19 material properties with values for both materials. Properties with values for just one material (11, 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 7021 aluminum and the bottom bar is N07041 nickel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 69 | |
| 220 |
| Elongation at Break, % | 9.4 | |
| 14 |
| Fatigue Strength, MPa | 150 | |
| 540 |
| Shear Strength, MPa | 270 | |
| 850 |
| Tensile Strength: Ultimate (UTS), MPa | 460 | |
| 1400 |
| Tensile Strength: Yield (Proof), MPa | 390 | |
| 1050 |
Thermal Properties
| Melting Onset (Solidus), °C | 510 | |
| 1320 |
| Specific Heat Capacity, J/kg-K | 870 | |
| 450 |
| Thermal Conductivity, W/m-K | 150 | |
| 11 |
| Thermal Expansion, µm/m-K | 24 | |
| 12 |
Otherwise Unclassified Properties
| Density, g/cm3 | 2.9 | |
| 8.2 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 41 | |
| 180 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 1110 | |
| 2510 |
| Stiffness to Weight: Axial, points | 13 | |
| 15 |
| Stiffness to Weight: Bending, points | 47 | |
| 25 |
| Strength to Weight: Axial, points | 44 | |
| 47 |
| Strength to Weight: Bending, points | 45 | |
| 34 |
| Thermal Diffusivity, mm2/s | 59 | |
| 3.0 |
| Thermal Shock Resistance, points | 20 | |
| 38 |