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Solder Alloy 131 vs. Z21721 Zinc

Solder alloy 131 belongs to the otherwise unclassified metals classification, while Z21721 zinc belongs to the zinc alloys. There are 23 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is solder alloy 131 and the bottom bar is Z21721 zinc.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 38
87
Elongation at Break, % 47
40
Poisson's Ratio 0.39
0.25
Shear Modulus, GPa 14
35
Tensile Strength: Ultimate (UTS), MPa 31
150

Thermal Properties

Latent Heat of Fusion, J/g 46
110
Melting Completion (Liquidus), °C 180
410
Melting Onset (Solidus), °C 180
390
Specific Heat Capacity, J/kg-K 190
390
Thermal Conductivity, W/m-K 55
110
Thermal Expansion, µm/m-K 25
26

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 11
27
Electrical Conductivity: Equal Weight (Specific), % IACS 12
37

Otherwise Unclassified Properties

Density, g/cm3 8.8
6.6
Embodied Carbon, kg CO2/kg material 11
2.8
Embodied Energy, MJ/kg 180
53
Embodied Water, L/kg 940
340

Common Calculations

Stiffness to Weight: Axial, points 2.4
7.3
Stiffness to Weight: Bending, points 13
22
Strength to Weight: Axial, points 1.0
6.4
Strength to Weight: Bending, points 2.5
9.6
Thermal Diffusivity, mm2/s 33
44
Thermal Shock Resistance, points 2.4
4.8

Alloy Composition

Aluminum (Al), % 0 to 0.0010
0 to 0.0020
Antimony (Sb), % 0.2 to 0.5
0
Arsenic (As), % 0 to 0.030
0
Bismuth (Bi), % 0 to 0.1
0
Cadmium (Cd), % 0 to 0.0020
0 to 0.070
Copper (Cu), % 0 to 0.080
0 to 0.0050
Gold (Au), % 0 to 0.050
0
Indium (In), % 0 to 0.1
0
Iron (Fe), % 0 to 0.020
0 to 0.010
Lead (Pb), % 35.5 to 37.3
0 to 1.0
Nickel (Ni), % 0 to 0.010
0
Silver (Ag), % 0 to 0.1
0
Tin (Sn), % 62.5 to 63.5
0
Titanium (Ti), % 0
0 to 0.020
Zinc (Zn), % 0 to 0.0010
98.9 to 100