7021 Aluminum vs. Nickel Beryllium 360
7021 aluminum belongs to the aluminum alloys classification, while nickel beryllium 360 belongs to the nickel alloys. There are 24 material properties with values for both materials. Properties with values for just one material (6, 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 nickel beryllium 360.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 69 | |
| 200 |
| Elongation at Break, % | 9.4 | |
| 1.0 to 30 |
| Fatigue Strength, MPa | 150 | |
| 260 to 710 |
| Poisson's Ratio | 0.32 | |
| 0.3 |
| Shear Modulus, GPa | 26 | |
| 77 |
| Shear Strength, MPa | 270 | |
| 510 to 1100 |
| Tensile Strength: Ultimate (UTS), MPa | 460 | |
| 780 to 1860 |
| Tensile Strength: Yield (Proof), MPa | 390 | |
| 380 to 1590 |
Thermal Properties
| Melting Completion (Liquidus), °C | 630 | |
| 1330 |
| Melting Onset (Solidus), °C | 510 | |
| 1200 |
| Specific Heat Capacity, J/kg-K | 870 | |
| 460 |
| Thermal Conductivity, W/m-K | 150 | |
| 48 |
| Thermal Expansion, µm/m-K | 24 | |
| 14 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 38 | |
| 5.0 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 120 | |
| 5.4 |
Otherwise Unclassified Properties
| Density, g/cm3 | 2.9 | |
| 8.3 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 41 | |
| 12 to 190 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 1110 | |
| 360 to 3440 |
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 47 | |
| 24 |
| Strength to Weight: Axial, points | 44 | |
| 26 to 62 |
| Strength to Weight: Bending, points | 45 | |
| 23 to 41 |
| Thermal Diffusivity, mm2/s | 59 | |
| 13 |
| Thermal Shock Resistance, points | 20 | |
| 19 to 46 |