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Solder Alloy 124 vs. 6105 Aluminum

Solder alloy 124 belongs to the otherwise unclassified metals classification, while 6105 aluminum belongs to the aluminum alloys. There are 24 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 solder alloy 124 and the bottom bar is 6105 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 17
68
Elongation at Break, % 46
9.0 to 16
Poisson's Ratio 0.44
0.33
Shear Modulus, GPa 5.8
26
Tensile Strength: Ultimate (UTS), MPa 27
190 to 280

Thermal Properties

Latent Heat of Fusion, J/g 24
410
Melting Completion (Liquidus), °C 330
650
Melting Onset (Solidus), °C 320
600
Specific Heat Capacity, J/kg-K 130
900
Thermal Conductivity, W/m-K 22
180 to 190
Thermal Expansion, µm/m-K 29
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 9.6
46 to 50
Electrical Conductivity: Equal Weight (Specific), % IACS 7.7
150 to 170

Otherwise Unclassified Properties

Base Metal Price, % relative 70
9.5
Density, g/cm3 11
2.7
Embodied Carbon, kg CO2/kg material 4.1
8.3
Embodied Energy, MJ/kg 68
150
Embodied Water, L/kg 470
1180

Common Calculations

Stiffness to Weight: Axial, points 0.83
14
Stiffness to Weight: Bending, points 7.6
51
Strength to Weight: Axial, points 0.65
20 to 29
Strength to Weight: Bending, points 1.8
28 to 35
Thermal Diffusivity, mm2/s 15
72 to 79
Thermal Shock Resistance, points 3.9
8.6 to 12

Alloy Composition

Aluminum (Al), % 0 to 0.0010
97.2 to 99
Antimony (Sb), % 0 to 0.12
0
Arsenic (As), % 0 to 0.030
0
Bismuth (Bi), % 0 to 0.1
0
Cadmium (Cd), % 0 to 0.0020
0
Chromium (Cr), % 0
0 to 0.1
Copper (Cu), % 0 to 0.080
0 to 0.1
Gold (Au), % 0 to 0.050
0
Indium (In), % 0 to 0.1
0
Iron (Fe), % 0 to 0.020
0 to 0.35
Lead (Pb), % 97.2 to 98.2
0
Magnesium (Mg), % 0
0.45 to 0.8
Manganese (Mn), % 0
0 to 0.1
Nickel (Ni), % 0 to 0.010
0
Silicon (Si), % 0
0.6 to 1.0
Silver (Ag), % 0 to 0.1
0
Tin (Sn), % 1.8 to 2.2
0
Titanium (Ti), % 0
0 to 0.1
Zinc (Zn), % 0 to 0.0010
0 to 0.1
Residuals, % 0
0 to 0.15