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7475 Aluminum vs. Solder Alloy 137

7475 aluminum belongs to the aluminum alloys classification, while solder alloy 137 belongs to the otherwise unclassified metals. There are 24 material properties with values for both materials. Properties with values for just one material (6, 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 7475 aluminum and the bottom bar is solder alloy 137.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
24
Elongation at Break, % 10 to 12
19
Poisson's Ratio 0.32
0.42
Shear Modulus, GPa 26
8.3
Tensile Strength: Ultimate (UTS), MPa 530 to 590
34

Thermal Properties

Latent Heat of Fusion, J/g 380
33
Melting Completion (Liquidus), °C 640
270
Melting Onset (Solidus), °C 480
190
Specific Heat Capacity, J/kg-K 870
150
Thermal Conductivity, W/m-K 140 to 160
38
Thermal Expansion, µm/m-K 23
27

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 33 to 42
8.9
Electrical Conductivity: Equal Weight (Specific), % IACS 98 to 120
7.7

Otherwise Unclassified Properties

Base Metal Price, % relative 10
85
Density, g/cm3 3.0
10
Embodied Carbon, kg CO2/kg material 8.2
6.3
Embodied Energy, MJ/kg 150
100
Embodied Water, L/kg 1130
660

Common Calculations

Stiffness to Weight: Axial, points 13
1.3
Stiffness to Weight: Bending, points 46
9.2
Strength to Weight: Axial, points 49 to 55
0.9
Strength to Weight: Bending, points 48 to 52
2.2
Thermal Diffusivity, mm2/s 53 to 63
25
Thermal Shock Resistance, points 23 to 26
3.7

Alloy Composition

Aluminum (Al), % 88.6 to 91.6
0 to 0.0010
Antimony (Sb), % 0
0.5 to 3.0
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 0.25
0
Copper (Cu), % 1.2 to 1.9
0 to 0.080
Gold (Au), % 0
0 to 0.050
Indium (In), % 0
0 to 0.1
Iron (Fe), % 0 to 0.12
0 to 0.020
Lead (Pb), % 0
75.9 to 80
Magnesium (Mg), % 1.9 to 2.6
0
Manganese (Mn), % 0 to 0.060
0
Nickel (Ni), % 0
0 to 0.010
Silicon (Si), % 0 to 0.1
0
Silver (Ag), % 0
0 to 0.1
Tin (Sn), % 0
19.5 to 20.5
Titanium (Ti), % 0 to 0.060
0
Zinc (Zn), % 5.1 to 6.2
0 to 0.0010
Residuals, % 0 to 0.15
0