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Solder Alloy 191 vs. Z21721 Zinc

Solder alloy 191 belongs to the otherwise unclassified metals classification, while Z21721 zinc belongs to the zinc alloys. There are 22 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is solder alloy 191 and the bottom bar is Z21721 zinc.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 19
87
Elongation at Break, % 32
40
Poisson's Ratio 0.43
0.25
Shear Modulus, GPa 6.5
35
Tensile Strength: Ultimate (UTS), MPa 29
150

Thermal Properties

Latent Heat of Fusion, J/g 27
110
Melting Completion (Liquidus), °C 300
410
Melting Onset (Solidus), °C 300
390
Specific Heat Capacity, J/kg-K 130
390
Thermal Conductivity, W/m-K 24
110
Thermal Expansion, µm/m-K 29
26

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 8.8
27
Electrical Conductivity: Equal Weight (Specific), % IACS 7.2
37

Otherwise Unclassified Properties

Density, g/cm3 11
6.6
Embodied Carbon, kg CO2/kg material 5.8
2.8
Embodied Energy, MJ/kg 95
53

Common Calculations

Stiffness to Weight: Axial, points 0.93
7.3
Stiffness to Weight: Bending, points 8.0
22
Strength to Weight: Axial, points 0.72
6.4
Strength to Weight: Bending, points 1.9
9.6
Thermal Diffusivity, mm2/s 16
44
Thermal Shock Resistance, points 3.9
4.8

Alloy Composition

Aluminum (Al), % 0 to 0.0010
0 to 0.0020
Antimony (Sb), % 0 to 0.2
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), % 92.4 to 94
0 to 1.0
Nickel (Ni), % 0 to 0.010
0
Silver (Ag), % 1.2 to 1.8
0
Tin (Sn), % 4.8 to 5.2
0
Titanium (Ti), % 0
0 to 0.020
Zinc (Zn), % 0 to 0.0010
98.9 to 100