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5051A Aluminum vs. Solder Alloy 181

5051A aluminum belongs to the aluminum alloys classification, while solder alloy 181 belongs to the otherwise unclassified metals. There are 22 material properties with values for both materials. Properties with values for just one material (8, 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 5051A aluminum and the bottom bar is solder alloy 181.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 68
18
Elongation at Break, % 18 to 21
41
Poisson's Ratio 0.33
0.44
Shear Modulus, GPa 26
6.1
Tensile Strength: Ultimate (UTS), MPa 170
27

Thermal Properties

Latent Heat of Fusion, J/g 400
26
Melting Completion (Liquidus), °C 640
310
Melting Onset (Solidus), °C 610
300
Specific Heat Capacity, J/kg-K 900
130
Thermal Conductivity, W/m-K 150
24
Thermal Expansion, µm/m-K 23
29

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 39
9.3
Electrical Conductivity: Equal Weight (Specific), % IACS 130
7.4

Otherwise Unclassified Properties

Density, g/cm3 2.7
11
Embodied Carbon, kg CO2/kg material 8.5
6.2
Embodied Energy, MJ/kg 150
100

Common Calculations

Stiffness to Weight: Axial, points 14
0.86
Stiffness to Weight: Bending, points 50
7.7
Strength to Weight: Axial, points 17 to 18
0.66
Strength to Weight: Bending, points 25
1.8
Thermal Diffusivity, mm2/s 63
16
Thermal Shock Resistance, points 7.6
3.8

Alloy Composition

Aluminum (Al), % 96.1 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 0.3
0
Copper (Cu), % 0 to 0.050
0 to 0.080
Gold (Au), % 0
0 to 0.050
Indium (In), % 0
0 to 0.1
Iron (Fe), % 0 to 0.45
0 to 0.020
Lead (Pb), % 0
96.2 to 98
Magnesium (Mg), % 1.4 to 2.1
0
Manganese (Mn), % 0 to 0.25
0
Nickel (Ni), % 0
0 to 0.010
Silicon (Si), % 0 to 0.3
0
Silver (Ag), % 0
2.0 to 3.0
Tin (Sn), % 0
0 to 0.25
Titanium (Ti), % 0 to 0.1
0
Zinc (Zn), % 0 to 0.2
0 to 0.0010
Residuals, % 0 to 0.15
0