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6081 Aluminum vs. Solder Alloy 171

6081 aluminum belongs to the aluminum alloys classification, while solder alloy 171 belongs to the otherwise unclassified metals. There are 22 material properties with values for both materials. Properties with values for just one material (9, 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 6081 aluminum and the bottom bar is solder alloy 171.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
38
Elongation at Break, % 9.0
45
Poisson's Ratio 0.33
0.39
Shear Modulus, GPa 26
14
Tensile Strength: Ultimate (UTS), MPa 310
48

Thermal Properties

Latent Heat of Fusion, J/g 410
47
Melting Completion (Liquidus), °C 640
180
Melting Onset (Solidus), °C 610
180
Specific Heat Capacity, J/kg-K 900
190
Thermal Conductivity, W/m-K 180
50
Thermal Expansion, µm/m-K 23
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 47
12
Electrical Conductivity: Equal Weight (Specific), % IACS 160
12

Otherwise Unclassified Properties

Density, g/cm3 2.7
8.8
Embodied Carbon, kg CO2/kg material 8.3
13
Embodied Energy, MJ/kg 150
210

Common Calculations

Stiffness to Weight: Axial, points 14
2.4
Stiffness to Weight: Bending, points 50
13
Strength to Weight: Axial, points 32
1.5
Strength to Weight: Bending, points 37
3.3
Thermal Diffusivity, mm2/s 74
30
Thermal Shock Resistance, points 14
3.7

Alloy Composition

Aluminum (Al), % 96.3 to 98.6
0 to 0.0010
Antimony (Sb), % 0
0 to 0.2
Arsenic (As), % 0
0 to 0.030
Bismuth (Bi), % 0
0 to 0.1
Cadmium (Cd), % 0
0 to 0.0020
Chromium (Cr), % 0 to 0.1
0
Copper (Cu), % 0 to 0.1
0 to 0.080
Gold (Au), % 0
0 to 0.050
Indium (In), % 0
0 to 0.1
Iron (Fe), % 0 to 0.5
0 to 0.020
Lead (Pb), % 0
34.7 to 36.7
Magnesium (Mg), % 0.6 to 1.0
0
Manganese (Mn), % 0.1 to 0.45
0
Nickel (Ni), % 0
0 to 0.010
Silicon (Si), % 0.7 to 1.1
0
Silver (Ag), % 0
1.8 to 2.2
Tin (Sn), % 0
61.5 to 62.5
Titanium (Ti), % 0 to 0.15
0
Zinc (Zn), % 0 to 0.2
0 to 0.0010
Residuals, % 0 to 0.15
0