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Solder Alloy 201 vs. 238.0 Aluminum

Solder alloy 201 belongs to the otherwise unclassified metals classification, while 238.0 aluminum belongs to the aluminum alloys. There are 23 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 solder alloy 201 and the bottom bar is 238.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 50
76
Elongation at Break, % 38
1.5
Poisson's Ratio 0.35
0.33
Shear Modulus, GPa 19
28
Tensile Strength: Ultimate (UTS), MPa 41
210

Thermal Properties

Latent Heat of Fusion, J/g 64
430
Melting Completion (Liquidus), °C 240
600
Melting Onset (Solidus), °C 240
510
Specific Heat Capacity, J/kg-K 220
840
Thermal Conductivity, W/m-K 28
100
Thermal Expansion, µm/m-K 21
21

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 12
25
Electrical Conductivity: Equal Weight (Specific), % IACS 15
67

Otherwise Unclassified Properties

Density, g/cm3 7.3
3.4
Embodied Carbon, kg CO2/kg material 15
7.4
Embodied Energy, MJ/kg 250
140
Embodied Water, L/kg 1320
1040

Common Calculations

Stiffness to Weight: Axial, points 3.8
12
Stiffness to Weight: Bending, points 17
42
Strength to Weight: Axial, points 1.6
17
Strength to Weight: Bending, points 3.6
23
Thermal Diffusivity, mm2/s 17
37
Thermal Shock Resistance, points 2.7
9.1

Alloy Composition

Aluminum (Al), % 0 to 0.0010
81.9 to 84.9
Antimony (Sb), % 4.5 to 5.5
0
Arsenic (As), % 0 to 0.030
0
Bismuth (Bi), % 0 to 0.1
0
Cadmium (Cd), % 0 to 0.0020
0
Copper (Cu), % 0 to 0.050
9.5 to 10.5
Gold (Au), % 0 to 0.050
0
Indium (In), % 0 to 0.1
0
Iron (Fe), % 0 to 0.020
1.0 to 1.5
Lead (Pb), % 0 to 0.070
0
Magnesium (Mg), % 0
0 to 0.25
Nickel (Ni), % 0 to 0.010
0
Silicon (Si), % 0
3.6 to 4.4
Silver (Ag), % 0 to 0.1
0
Tin (Sn), % 94 to 95.5
0
Zinc (Zn), % 0 to 0.0010
1.0 to 1.5