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Solder Alloy 502 vs. ZA-8

Solder alloy 502 belongs to the otherwise unclassified metals classification, while ZA-8 belongs to the zinc alloys. There are 22 material properties with values for both materials. Properties with values for just one material (14, in this case) are not shown.

For each property being compared, the top bar is solder alloy 502 and the bottom bar is ZA-8.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 53
85 to 86
Elongation at Break, % 34
1.3 to 8.0
Poisson's Ratio 0.36
0.26
Shear Modulus, GPa 19
34
Tensile Strength: Ultimate (UTS), MPa 58
210 to 370

Thermal Properties

Latent Heat of Fusion, J/g 66
110
Melting Completion (Liquidus), °C 350
400
Melting Onset (Solidus), °C 220
380
Specific Heat Capacity, J/kg-K 230
440
Thermal Conductivity, W/m-K 47
120
Thermal Expansion, µm/m-K 22
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 12
28
Electrical Conductivity: Equal Weight (Specific), % IACS 15
40

Otherwise Unclassified Properties

Density, g/cm3 7.4
6.3
Embodied Carbon, kg CO2/kg material 15
3.3
Embodied Energy, MJ/kg 260
62

Common Calculations

Stiffness to Weight: Axial, points 4.0
7.5
Stiffness to Weight: Bending, points 17
23
Strength to Weight: Axial, points 2.2
9.3 to 17
Strength to Weight: Bending, points 4.5
12 to 18
Thermal Diffusivity, mm2/s 28
42
Thermal Shock Resistance, points 3.6
7.6 to 13

Alloy Composition

Aluminum (Al), % 0 to 0.0010
8.0 to 8.8
Antimony (Sb), % 0 to 0.1
0
Arsenic (As), % 0 to 0.030
0
Bismuth (Bi), % 0 to 0.080
0
Cadmium (Cd), % 0 to 0.0020
0 to 0.0060
Copper (Cu), % 3.5 to 4.5
0.8 to 1.3
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), % 0 to 0.070
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 0.045
Silver (Ag), % 0.8 to 1.2
0
Tin (Sn), % 93.8 to 95.7
0 to 0.0030
Zinc (Zn), % 0 to 0.0010
89.7 to 91.2