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5454 Aluminum vs. Solder Alloy 121

5454 aluminum belongs to the aluminum alloys classification, while solder alloy 121 belongs to the otherwise unclassified metals. There are 25 material properties with values for both materials. Properties with values for just one material (6, 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 5454 aluminum and the bottom bar is solder alloy 121.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 61 to 93
11
Elastic (Young's, Tensile) Modulus, GPa 69
21
Elongation at Break, % 2.3 to 18
25
Poisson's Ratio 0.33
0.43
Shear Modulus, GPa 26
7.5
Tensile Strength: Ultimate (UTS), MPa 230 to 350
32

Thermal Properties

Latent Heat of Fusion, J/g 400
29
Melting Completion (Liquidus), °C 650
290
Melting Onset (Solidus), °C 600
230
Specific Heat Capacity, J/kg-K 900
140
Thermal Conductivity, W/m-K 130
31
Thermal Expansion, µm/m-K 24
28

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 34
8.8
Electrical Conductivity: Equal Weight (Specific), % IACS 110
7.4

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
80
Density, g/cm3 2.7
11
Embodied Carbon, kg CO2/kg material 8.6
5.6
Embodied Energy, MJ/kg 150
93
Embodied Water, L/kg 1180
580

Common Calculations

Stiffness to Weight: Axial, points 14
1.1
Stiffness to Weight: Bending, points 50
8.6
Strength to Weight: Axial, points 23 to 36
0.84
Strength to Weight: Bending, points 30 to 41
2.1
Thermal Diffusivity, mm2/s 55
20
Thermal Shock Resistance, points 10 to 16
3.9

Alloy Composition

Aluminum (Al), % 94.5 to 97.1
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), % 0.050 to 0.2
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 0.4
0 to 0.020
Lead (Pb), % 0
83.4 to 85.5
Magnesium (Mg), % 2.4 to 3.0
0
Manganese (Mn), % 0.5 to 1.0
0
Nickel (Ni), % 0
0 to 0.010
Silicon (Si), % 0 to 0.25
0
Silver (Ag), % 0
0 to 0.1
Tin (Sn), % 0
14.5 to 15.5
Titanium (Ti), % 0 to 0.2
0
Zinc (Zn), % 0 to 0.25
0 to 0.0010
Residuals, % 0 to 0.15
0