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Solder Alloy 131 vs. ZA-12

Solder alloy 131 belongs to the otherwise unclassified metals classification, while ZA-12 belongs to the zinc alloys. There are 23 material properties with values for both materials. Properties with values for just one material (13, in this case) are not shown.

For each property being compared, the top bar is solder alloy 131 and the bottom bar is ZA-12.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 38
83
Elongation at Break, % 47
1.6 to 5.3
Poisson's Ratio 0.39
0.26
Shear Modulus, GPa 14
33
Tensile Strength: Ultimate (UTS), MPa 31
260 to 400

Thermal Properties

Latent Heat of Fusion, J/g 46
120
Melting Completion (Liquidus), °C 180
430
Melting Onset (Solidus), °C 180
380
Specific Heat Capacity, J/kg-K 190
450
Thermal Conductivity, W/m-K 55
120
Thermal Expansion, µm/m-K 25
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 11
28
Electrical Conductivity: Equal Weight (Specific), % IACS 12
42

Otherwise Unclassified Properties

Density, g/cm3 8.8
6.0
Embodied Carbon, kg CO2/kg material 11
3.4
Embodied Energy, MJ/kg 180
64
Embodied Water, L/kg 940
440

Common Calculations

Stiffness to Weight: Axial, points 2.4
7.6
Stiffness to Weight: Bending, points 13
24
Strength to Weight: Axial, points 1.0
12 to 19
Strength to Weight: Bending, points 2.5
15 to 20
Thermal Diffusivity, mm2/s 33
43
Thermal Shock Resistance, points 2.4
9.4 to 14

Alloy Composition

Aluminum (Al), % 0 to 0.0010
10.5 to 11.5
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 0.0060
Copper (Cu), % 0 to 0.080
0.5 to 1.2
Gold (Au), % 0 to 0.050
0
Indium (In), % 0 to 0.1
0
Iron (Fe), % 0 to 0.020
0 to 0.075
Lead (Pb), % 35.5 to 37.3
0 to 0.0060
Magnesium (Mg), % 0
0.015 to 0.030
Nickel (Ni), % 0 to 0.010
0 to 0.020
Silicon (Si), % 0
0 to 0.060
Silver (Ag), % 0 to 0.1
0
Tin (Sn), % 62.5 to 63.5
0 to 0.0030
Zinc (Zn), % 0 to 0.0010
87.1 to 89