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4045 Aluminum vs. Solder Alloy 402

4045 aluminum belongs to the aluminum alloys classification, while solder alloy 402 belongs to the otherwise unclassified metals. There are 23 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 4045 aluminum and the bottom bar is solder alloy 402.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 71
52
Elongation at Break, % 2.3
20
Poisson's Ratio 0.33
0.36
Shear Modulus, GPa 27
19
Tensile Strength: Ultimate (UTS), MPa 120
57

Thermal Properties

Latent Heat of Fusion, J/g 540
64
Melting Completion (Liquidus), °C 600
310
Melting Onset (Solidus), °C 580
230
Specific Heat Capacity, J/kg-K 900
230
Thermal Conductivity, W/m-K 170
61
Thermal Expansion, µm/m-K 21
22

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 45
15
Electrical Conductivity: Equal Weight (Specific), % IACS 160
18

Otherwise Unclassified Properties

Density, g/cm3 2.6
7.3
Embodied Carbon, kg CO2/kg material 7.8
15
Embodied Energy, MJ/kg 150
250
Embodied Water, L/kg 1070
1180

Common Calculations

Stiffness to Weight: Axial, points 15
3.9
Stiffness to Weight: Bending, points 54
17
Strength to Weight: Axial, points 13
2.2
Strength to Weight: Bending, points 21
4.5
Thermal Diffusivity, mm2/s 74
37
Thermal Shock Resistance, points 5.7
3.6

Alloy Composition

Aluminum (Al), % 87.4 to 91
0 to 0.0010
Antimony (Sb), % 0
0 to 0.1
Arsenic (As), % 0
0 to 0.030
Bismuth (Bi), % 0
0 to 0.1
Cadmium (Cd), % 0
0 to 0.0020
Copper (Cu), % 0 to 0.3
2.5 to 3.5
Gold (Au), % 0
0 to 0.050
Indium (In), % 0
0 to 0.1
Iron (Fe), % 0 to 0.8
0 to 0.020
Lead (Pb), % 0
0 to 0.070
Magnesium (Mg), % 0 to 0.050
0
Manganese (Mn), % 0 to 0.050
0
Nickel (Ni), % 0
0 to 0.010
Silicon (Si), % 9.0 to 11
0
Silver (Ag), % 0
0 to 0.1
Tin (Sn), % 0
95.9 to 97.5
Titanium (Ti), % 0 to 0.2
0
Zinc (Zn), % 0 to 0.1
0 to 0.0010
Residuals, % 0 to 0.15
0