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2124 Aluminum vs. Solder Alloy 151

2124 aluminum belongs to the aluminum alloys classification, while solder alloy 151 belongs to the otherwise unclassified metals. 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 2124 aluminum and the bottom bar is solder alloy 151.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 71
39
Elongation at Break, % 5.7
37
Poisson's Ratio 0.33
0.37
Shear Modulus, GPa 27
14
Tensile Strength: Ultimate (UTS), MPa 490
46

Thermal Properties

Latent Heat of Fusion, J/g 390
47
Melting Completion (Liquidus), °C 640
150
Melting Onset (Solidus), °C 500
150
Specific Heat Capacity, J/kg-K 880
190
Thermal Conductivity, W/m-K 150
44
Thermal Expansion, µm/m-K 23
26

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 38
10
Electrical Conductivity: Equal Weight (Specific), % IACS 110
10

Otherwise Unclassified Properties

Density, g/cm3 3.0
8.8
Embodied Carbon, kg CO2/kg material 8.2
9.2
Embodied Energy, MJ/kg 150
160
Embodied Water, L/kg 1150
920

Common Calculations

Stiffness to Weight: Axial, points 13
2.5
Stiffness to Weight: Bending, points 46
13
Strength to Weight: Axial, points 45
1.4
Strength to Weight: Bending, points 46
3.2
Thermal Diffusivity, mm2/s 58
26
Thermal Shock Resistance, points 21
3.2

Alloy Composition

Aluminum (Al), % 91.3 to 94.7
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
17.5 to 18.5
Chromium (Cr), % 0 to 0.1
0
Copper (Cu), % 3.8 to 4.9
0 to 0.080
Gold (Au), % 0
0 to 0.050
Indium (In), % 0
0 to 0.1
Iron (Fe), % 0 to 0.3
0 to 0.020
Lead (Pb), % 0
30.3 to 33
Magnesium (Mg), % 1.2 to 1.8
0
Manganese (Mn), % 0.3 to 0.9
0
Nickel (Ni), % 0
0 to 0.010
Silicon (Si), % 0 to 0.2
0
Silver (Ag), % 0
0 to 0.1
Tin (Sn), % 0
49.5 to 50.5
Titanium (Ti), % 0 to 0.15
0
Zinc (Zn), % 0 to 0.25
0 to 0.0010
Residuals, % 0 to 0.15
0