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Solder Alloy 703 vs. ZA-27

Solder alloy 703 belongs to the otherwise unclassified metals classification, while ZA-27 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 703 and the bottom bar is ZA-27.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 15
100 to 120
Elastic (Young's, Tensile) Modulus, GPa 51
78
Elongation at Break, % 35
2.0 to 4.5
Poisson's Ratio 0.36
0.27
Shear Modulus, GPa 19
31
Tensile Strength: Ultimate (UTS), MPa 57
400 to 430

Thermal Properties

Latent Heat of Fusion, J/g 61
130
Melting Completion (Liquidus), °C 220
480
Melting Onset (Solidus), °C 220
380
Specific Heat Capacity, J/kg-K 220
530
Thermal Conductivity, W/m-K 55
130
Thermal Expansion, µm/m-K 22
26

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 14
30
Electrical Conductivity: Equal Weight (Specific), % IACS 17
53

Otherwise Unclassified Properties

Density, g/cm3 7.4
5.0
Embodied Carbon, kg CO2/kg material 18
4.2
Embodied Energy, MJ/kg 300
80

Common Calculations

Stiffness to Weight: Axial, points 3.8
8.6
Stiffness to Weight: Bending, points 17
28
Strength to Weight: Axial, points 2.1
22 to 24
Strength to Weight: Bending, points 4.4
24 to 25
Thermal Diffusivity, mm2/s 33
47
Thermal Shock Resistance, points 3.7
14 to 15

Alloy Composition

Aluminum (Al), % 0 to 0.0010
25 to 28
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 to 0.050
2.0 to 2.5
Gold (Au), % 0 to 0.050
0
Indium (In), % 0 to 0.1
0
Iron (Fe), % 0 to 0.020
0 to 0.1
Lead (Pb), % 0 to 0.070
0 to 0.0060
Magnesium (Mg), % 0
0.010 to 0.020
Nickel (Ni), % 0 to 0.010
0 to 0.020
Silicon (Si), % 0
0 to 0.080
Silver (Ag), % 3.3 to 3.7
0
Tin (Sn), % 95.8 to 96.7
0 to 0.0030
Zinc (Zn), % 0 to 0.0010
69.3 to 73