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7175 Aluminum vs. Solder Alloy 117

7175 aluminum belongs to the aluminum alloys classification, while solder alloy 117 belongs to the otherwise unclassified metals. There are 24 material properties with values for both materials. Properties with values for just one material (7, 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 7175 aluminum and the bottom bar is solder alloy 117.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
23
Elongation at Break, % 3.8 to 5.9
20
Poisson's Ratio 0.32
0.42
Shear Modulus, GPa 26
8.1
Tensile Strength: Ultimate (UTS), MPa 520 to 570
33

Thermal Properties

Latent Heat of Fusion, J/g 380
31
Melting Completion (Liquidus), °C 640
280
Melting Onset (Solidus), °C 480
180
Specific Heat Capacity, J/kg-K 870
150
Thermal Conductivity, W/m-K 140
37
Thermal Expansion, µm/m-K 23
28

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 33
8.7
Electrical Conductivity: Equal Weight (Specific), % IACS 99
7.5

Otherwise Unclassified Properties

Base Metal Price, % relative 10
85
Density, g/cm3 3.0
11
Embodied Carbon, kg CO2/kg material 8.2
6.1
Embodied Energy, MJ/kg 150
100
Embodied Water, L/kg 1130
610

Common Calculations

Stiffness to Weight: Axial, points 13
1.2
Stiffness to Weight: Bending, points 46
9.0
Strength to Weight: Axial, points 48 to 52
0.88
Strength to Weight: Bending, points 48 to 51
2.2
Thermal Diffusivity, mm2/s 53
24
Thermal Shock Resistance, points 23 to 25
3.7

Alloy Composition

Aluminum (Al), % 88 to 91.4
0 to 0.0010
Antimony (Sb), % 0
0 to 0.5
Arsenic (As), % 0
0 to 0.030
Bismuth (Bi), % 0
0 to 0.25
Cadmium (Cd), % 0
0 to 0.0050
Chromium (Cr), % 0.18 to 0.28
0
Copper (Cu), % 1.2 to 2.0
0 to 0.080
Gold (Au), % 0
0 to 0.050
Indium (In), % 0
0 to 0.1
Iron (Fe), % 0 to 0.2
0 to 0.020
Lead (Pb), % 0
78.4 to 80.5
Magnesium (Mg), % 2.1 to 2.9
0
Manganese (Mn), % 0 to 0.1
0
Nickel (Ni), % 0
0 to 0.010
Silicon (Si), % 0 to 0.15
0
Silver (Ag), % 0
0 to 0.1
Tin (Sn), % 0
19.5 to 20.5
Titanium (Ti), % 0 to 0.1
0
Zinc (Zn), % 5.1 to 6.1
0 to 0.0010
Residuals, % 0 to 0.15
0