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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