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7020 Aluminum vs. AWS BNi-10

7020 aluminum belongs to the aluminum alloys classification, while AWS BNi-10 belongs to the nickel alloys. There are 19 material properties with values for both materials. Properties with values for just one material (13, 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 AWS BNi-10.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
200
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 26
76
Tensile Strength: Ultimate (UTS), MPa 190 to 390
600

Thermal Properties

Latent Heat of Fusion, J/g 380
330
Melting Completion (Liquidus), °C 650
1110
Melting Onset (Solidus), °C 610
970
Specific Heat Capacity, J/kg-K 880
440
Thermal Expansion, µm/m-K 23
11

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
80
Density, g/cm3 2.9
9.4
Embodied Carbon, kg CO2/kg material 8.3
11
Embodied Energy, MJ/kg 150
160
Embodied Water, L/kg 1150
230

Common Calculations

Stiffness to Weight: Axial, points 13
12
Stiffness to Weight: Bending, points 47
21
Strength to Weight: Axial, points 18 to 37
18
Strength to Weight: Bending, points 25 to 41
17
Thermal Shock Resistance, points 8.3 to 17
19

Alloy Composition

Aluminum (Al), % 91.2 to 94.8
0 to 0.050
Boron (B), % 0
2.0 to 3.0
Carbon (C), % 0
0.4 to 0.55
Chromium (Cr), % 0.1 to 0.35
10 to 13
Cobalt (Co), % 0
0 to 0.1
Copper (Cu), % 0 to 0.2
0
Iron (Fe), % 0 to 0.4
2.5 to 4.5
Magnesium (Mg), % 1.0 to 1.4
0
Manganese (Mn), % 0.050 to 0.5
0
Nickel (Ni), % 0
57.2 to 67.1
Phosphorus (P), % 0
0 to 0.020
Selenium (Se), % 0
0 to 0.0050
Silicon (Si), % 0 to 0.35
3.0 to 4.0
Sulfur (S), % 0
0 to 0.020
Titanium (Ti), % 0 to 0.25
0 to 0.050
Tungsten (W), % 0
15 to 17
Zinc (Zn), % 4.0 to 5.0
0
Zirconium (Zr), % 0.080 to 0.25
0 to 0.050
Residuals, % 0
0 to 0.5