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AWS BNi-6 vs. 7175 Aluminum

AWS BNi-6 belongs to the nickel alloys classification, while 7175 aluminum belongs to the aluminum alloys. There are 19 material properties with values for both materials. Properties with values for just one material (12, 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 AWS BNi-6 and the bottom bar is 7175 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 160
70
Poisson's Ratio 0.31
0.32
Shear Modulus, GPa 62
26
Tensile Strength: Ultimate (UTS), MPa 450
520 to 570

Thermal Properties

Latent Heat of Fusion, J/g 260
380
Melting Completion (Liquidus), °C 880
640
Melting Onset (Solidus), °C 880
480
Specific Heat Capacity, J/kg-K 480
870
Thermal Expansion, µm/m-K 9.8
23

Otherwise Unclassified Properties

Base Metal Price, % relative 55
10
Density, g/cm3 8.2
3.0
Embodied Carbon, kg CO2/kg material 9.4
8.2
Embodied Energy, MJ/kg 130
150
Embodied Water, L/kg 210
1130

Common Calculations

Stiffness to Weight: Axial, points 11
13
Stiffness to Weight: Bending, points 22
46
Strength to Weight: Axial, points 15
48 to 52
Strength to Weight: Bending, points 16
48 to 51
Thermal Shock Resistance, points 20
23 to 25

Alloy Composition

Aluminum (Al), % 0 to 0.050
88 to 91.4
Carbon (C), % 0 to 0.060
0
Chromium (Cr), % 0
0.18 to 0.28
Cobalt (Co), % 0 to 0.1
0
Copper (Cu), % 0
1.2 to 2.0
Iron (Fe), % 0
0 to 0.2
Magnesium (Mg), % 0
2.1 to 2.9
Manganese (Mn), % 0
0 to 0.1
Nickel (Ni), % 87.2 to 90
0
Phosphorus (P), % 10 to 12
0
Selenium (Se), % 0 to 0.0050
0
Silicon (Si), % 0
0 to 0.15
Sulfur (S), % 0 to 0.020
0
Titanium (Ti), % 0 to 0.050
0 to 0.1
Zinc (Zn), % 0
5.1 to 6.1
Zirconium (Zr), % 0 to 0.050
0
Residuals, % 0
0 to 0.15