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7020 Aluminum vs. Nickel 908

7020 aluminum belongs to the aluminum alloys classification, while nickel 908 belongs to the nickel alloys. There are 28 material properties with values for both materials. Properties with values for just one material (4, 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 7020 aluminum and the bottom bar is nickel 908.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
180
Elongation at Break, % 8.4 to 14
11
Fatigue Strength, MPa 110 to 130
450
Poisson's Ratio 0.33
0.3
Shear Modulus, GPa 26
70
Shear Strength, MPa 110 to 230
800
Tensile Strength: Ultimate (UTS), MPa 190 to 390
1340
Tensile Strength: Yield (Proof), MPa 120 to 310
930

Thermal Properties

Latent Heat of Fusion, J/g 380
290
Maximum Temperature: Mechanical, °C 210
920
Melting Completion (Liquidus), °C 650
1430
Melting Onset (Solidus), °C 610
1380
Specific Heat Capacity, J/kg-K 880
460
Thermal Conductivity, W/m-K 150
11
Thermal Expansion, µm/m-K 23
8.6

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
50
Density, g/cm3 2.9
8.3
Embodied Carbon, kg CO2/kg material 8.3
9.3
Embodied Energy, MJ/kg 150
140
Embodied Water, L/kg 1150
170

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 23 to 46
140
Resilience: Unit (Modulus of Resilience), kJ/m3 110 to 690
2340
Stiffness to Weight: Axial, points 13
12
Stiffness to Weight: Bending, points 47
23
Strength to Weight: Axial, points 18 to 37
45
Strength to Weight: Bending, points 25 to 41
33
Thermal Diffusivity, mm2/s 59
2.9
Thermal Shock Resistance, points 8.3 to 17
61

Alloy Composition

Aluminum (Al), % 91.2 to 94.8
0.75 to 1.3
Boron (B), % 0
0 to 0.012
Carbon (C), % 0
0 to 0.030
Chromium (Cr), % 0.1 to 0.35
3.8 to 4.5
Cobalt (Co), % 0
0 to 0.5
Copper (Cu), % 0 to 0.2
0 to 0.5
Iron (Fe), % 0 to 0.4
35.6 to 44.6
Magnesium (Mg), % 1.0 to 1.4
0
Manganese (Mn), % 0.050 to 0.5
0 to 1.0
Nickel (Ni), % 0
47 to 51
Niobium (Nb), % 0
2.7 to 3.3
Phosphorus (P), % 0
0 to 0.015
Silicon (Si), % 0 to 0.35
0 to 0.5
Sulfur (S), % 0
0 to 0.0050
Titanium (Ti), % 0 to 0.25
1.2 to 1.8
Zinc (Zn), % 4.0 to 5.0
0
Zirconium (Zr), % 0.080 to 0.25
0
Residuals, % 0 to 0.15
0