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2014 Aluminum vs. Solder Alloy 121

2014 aluminum belongs to the aluminum alloys classification, while solder alloy 121 belongs to the otherwise unclassified metals. There are 24 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 2014 aluminum and the bottom bar is solder alloy 121.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 72
21
Elongation at Break, % 1.5 to 16
25
Poisson's Ratio 0.33
0.43
Shear Modulus, GPa 27
7.5
Tensile Strength: Ultimate (UTS), MPa 190 to 500
32

Thermal Properties

Latent Heat of Fusion, J/g 400
29
Melting Completion (Liquidus), °C 630
290
Melting Onset (Solidus), °C 510
230
Specific Heat Capacity, J/kg-K 870
140
Thermal Conductivity, W/m-K 150
31
Thermal Expansion, µm/m-K 23
28

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 40
8.8
Electrical Conductivity: Equal Weight (Specific), % IACS 120
7.4

Otherwise Unclassified Properties

Base Metal Price, % relative 11
80
Density, g/cm3 3.0
11
Embodied Carbon, kg CO2/kg material 8.1
5.6
Embodied Energy, MJ/kg 150
93
Embodied Water, L/kg 1130
580

Common Calculations

Stiffness to Weight: Axial, points 13
1.1
Stiffness to Weight: Bending, points 46
8.6
Strength to Weight: Axial, points 18 to 46
0.84
Strength to Weight: Bending, points 25 to 46
2.1
Thermal Diffusivity, mm2/s 58
20
Thermal Shock Resistance, points 8.4 to 22
3.9

Alloy Composition

Aluminum (Al), % 90.4 to 95
0 to 0.0010
Antimony (Sb), % 0
0 to 0.5
Arsenic (As), % 0
0 to 0.030
Bismuth (Bi), % 0
0 to 0.25
Cadmium (Cd), % 0
0 to 0.0050
Chromium (Cr), % 0 to 0.1
0
Copper (Cu), % 3.9 to 5.0
0 to 0.080
Gold (Au), % 0
0 to 0.050
Indium (In), % 0
0 to 0.1
Iron (Fe), % 0 to 0.7
0 to 0.020
Lead (Pb), % 0
83.4 to 85.5
Magnesium (Mg), % 0.2 to 0.8
0
Manganese (Mn), % 0.4 to 1.2
0
Nickel (Ni), % 0
0 to 0.010
Silicon (Si), % 0.5 to 1.2
0
Silver (Ag), % 0
0 to 0.1
Tin (Sn), % 0
14.5 to 15.5
Titanium (Ti), % 0 to 0.15
0
Zinc (Zn), % 0 to 0.25
0 to 0.0010
Zirconium (Zr), % 0 to 0.2
0
Residuals, % 0 to 0.15
0