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7075 Aluminum vs. AWS BNi-1

7075 aluminum belongs to the aluminum alloys classification, while AWS BNi-1 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 7075 aluminum and the bottom bar is AWS BNi-1.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
180
Poisson's Ratio 0.32
0.3
Shear Modulus, GPa 26
70
Tensile Strength: Ultimate (UTS), MPa 240 to 590
450

Thermal Properties

Latent Heat of Fusion, J/g 380
360
Melting Completion (Liquidus), °C 640
1040
Melting Onset (Solidus), °C 480
980
Specific Heat Capacity, J/kg-K 870
500
Thermal Expansion, µm/m-K 23
12

Otherwise Unclassified Properties

Base Metal Price, % relative 10
55
Density, g/cm3 3.0
8.0
Embodied Carbon, kg CO2/kg material 8.3
8.8
Embodied Energy, MJ/kg 150
120
Embodied Water, L/kg 1120
240

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 46
24
Strength to Weight: Axial, points 22 to 54
16
Strength to Weight: Bending, points 28 to 52
16
Thermal Shock Resistance, points 10 to 25
15

Alloy Composition

Aluminum (Al), % 86.9 to 91.4
0 to 0.050
Boron (B), % 0
2.8 to 3.5
Carbon (C), % 0
0.6 to 0.9
Chromium (Cr), % 0.18 to 0.28
13 to 15
Cobalt (Co), % 0
0 to 0.1
Copper (Cu), % 1.2 to 2.0
0
Iron (Fe), % 0 to 0.5
4.0 to 5.0
Magnesium (Mg), % 2.1 to 2.9
0
Manganese (Mn), % 0 to 0.3
0
Nickel (Ni), % 0
69.8 to 75.7
Phosphorus (P), % 0
0 to 0.020
Selenium (Se), % 0
0 to 0.0050
Silicon (Si), % 0 to 0.4
4.0 to 5.0
Sulfur (S), % 0
0 to 0.020
Titanium (Ti), % 0 to 0.2
0 to 0.050
Zinc (Zn), % 5.1 to 6.1
0
Zirconium (Zr), % 0 to 0.25
0 to 0.050
Residuals, % 0
0 to 0.5