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Solder Alloy 117 vs. 4145 Aluminum

Solder alloy 117 belongs to the otherwise unclassified metals classification, while 4145 aluminum belongs to the aluminum alloys. There are 24 material properties with values for both materials. Properties with values for just one material (8, 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 117 and the bottom bar is 4145 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 23
73
Elongation at Break, % 20
2.2
Poisson's Ratio 0.42
0.33
Shear Modulus, GPa 8.1
28
Tensile Strength: Ultimate (UTS), MPa 33
120

Thermal Properties

Latent Heat of Fusion, J/g 31
540
Melting Completion (Liquidus), °C 280
590
Melting Onset (Solidus), °C 180
520
Specific Heat Capacity, J/kg-K 150
880
Thermal Conductivity, W/m-K 37
100
Thermal Expansion, µm/m-K 28
21

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 8.7
26
Electrical Conductivity: Equal Weight (Specific), % IACS 7.5
84

Otherwise Unclassified Properties

Base Metal Price, % relative 85
10
Density, g/cm3 11
2.8
Embodied Carbon, kg CO2/kg material 6.1
7.6
Embodied Energy, MJ/kg 100
140
Embodied Water, L/kg 610
1040

Common Calculations

Stiffness to Weight: Axial, points 1.2
14
Stiffness to Weight: Bending, points 9.0
50
Strength to Weight: Axial, points 0.88
12
Strength to Weight: Bending, points 2.2
19
Thermal Diffusivity, mm2/s 24
42
Thermal Shock Resistance, points 3.7
5.5

Alloy Composition

Aluminum (Al), % 0 to 0.0010
83 to 87.4
Antimony (Sb), % 0 to 0.5
0
Arsenic (As), % 0 to 0.030
0
Bismuth (Bi), % 0 to 0.25
0
Cadmium (Cd), % 0 to 0.0050
0
Chromium (Cr), % 0
0 to 0.15
Copper (Cu), % 0 to 0.080
3.3 to 4.7
Gold (Au), % 0 to 0.050
0
Indium (In), % 0 to 0.1
0
Iron (Fe), % 0 to 0.020
0 to 0.8
Lead (Pb), % 78.4 to 80.5
0
Magnesium (Mg), % 0
0 to 0.15
Manganese (Mn), % 0
0 to 0.15
Nickel (Ni), % 0 to 0.010
0
Silicon (Si), % 0
9.3 to 10.7
Silver (Ag), % 0 to 0.1
0
Tin (Sn), % 19.5 to 20.5
0
Zinc (Zn), % 0 to 0.0010
0 to 0.2
Residuals, % 0
0 to 0.15