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Solder Alloy 131 vs. 3203 Aluminum

Solder alloy 131 belongs to the otherwise unclassified metals classification, while 3203 aluminum belongs to the aluminum alloys. There are 23 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 solder alloy 131 and the bottom bar is 3203 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 38
70
Elongation at Break, % 47
4.5 to 29
Poisson's Ratio 0.39
0.33
Shear Modulus, GPa 14
26
Tensile Strength: Ultimate (UTS), MPa 31
110 to 200

Thermal Properties

Latent Heat of Fusion, J/g 46
400
Melting Completion (Liquidus), °C 180
650
Melting Onset (Solidus), °C 180
620
Specific Heat Capacity, J/kg-K 190
900
Thermal Conductivity, W/m-K 55
170
Thermal Expansion, µm/m-K 25
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 11
43
Electrical Conductivity: Equal Weight (Specific), % IACS 12
140

Otherwise Unclassified Properties

Density, g/cm3 8.8
2.8
Embodied Carbon, kg CO2/kg material 11
8.1
Embodied Energy, MJ/kg 180
150
Embodied Water, L/kg 940
1180

Common Calculations

Stiffness to Weight: Axial, points 2.4
14
Stiffness to Weight: Bending, points 13
50
Strength to Weight: Axial, points 1.0
11 to 20
Strength to Weight: Bending, points 2.5
19 to 28
Thermal Diffusivity, mm2/s 33
70
Thermal Shock Resistance, points 2.4
4.9 to 8.8

Alloy Composition


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Aluminum (Al), % 0 to 0.0010
96.9 to 99
Antimony (Sb), % 0.2 to 0.5
0
Arsenic (As), % 0 to 0.030
0
Bismuth (Bi), % 0 to 0.1
0
Cadmium (Cd), % 0 to 0.0020
0
Copper (Cu), % 0 to 0.080
0 to 0.050
Gold (Au), % 0 to 0.050
0
Indium (In), % 0 to 0.1
0
Iron (Fe), % 0 to 0.020
0 to 0.7
Lead (Pb), % 35.5 to 37.3
0
Manganese (Mn), % 0
1.0 to 1.5
Nickel (Ni), % 0 to 0.010
0
Silicon (Si), % 0
0 to 0.6
Silver (Ag), % 0 to 0.1
0
Tin (Sn), % 62.5 to 63.5
0
Zinc (Zn), % 0 to 0.0010
0 to 0.1
Residuals, % 0
0 to 0.15