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Solder Alloy 715 vs. ZA-8

Solder alloy 715 belongs to the otherwise unclassified metals classification, while ZA-8 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 715 and the bottom bar is ZA-8.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 16
87 to 100
Elastic (Young's, Tensile) Modulus, GPa 51
85 to 86
Elongation at Break, % 21
1.3 to 8.0
Poisson's Ratio 0.36
0.26
Shear Modulus, GPa 19
34
Tensile Strength: Ultimate (UTS), MPa 30
210 to 370

Thermal Properties

Latent Heat of Fusion, J/g 61
110
Melting Completion (Liquidus), °C 220
400
Melting Onset (Solidus), °C 220
380
Specific Heat Capacity, J/kg-K 220
440
Thermal Conductivity, W/m-K 60
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 7.3
6.3
Embodied Carbon, kg CO2/kg material 16
3.3
Embodied Energy, MJ/kg 270
62

Common Calculations

Stiffness to Weight: Axial, points 3.8
7.5
Stiffness to Weight: Bending, points 17
23
Strength to Weight: Axial, points 1.1
9.3 to 17
Strength to Weight: Bending, points 2.9
12 to 18
Thermal Diffusivity, mm2/s 37
42
Thermal Shock Resistance, points 1.9
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 0.1
0
Cadmium (Cd), % 0 to 0.0020
0 to 0.0060
Copper (Cu), % 0.5 to 0.9
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), % 97.4 to 98.7
0 to 0.0030
Zinc (Zn), % 0 to 0.0010
89.7 to 91.2