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Solder Alloy 702 vs. ZC63A Magnesium

Solder alloy 702 belongs to the otherwise unclassified metals classification, while ZC63A magnesium belongs to the magnesium alloys. There are 22 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown. Please note that the two materials have significantly dissimilar densities. This means that additional care is required when interpreting the data, because some material properties are based on units of mass, while others are based on units of area or volume.

For each property being compared, the top bar is solder alloy 702 and the bottom bar is ZC63A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 51
48
Elongation at Break, % 21
3.3
Poisson's Ratio 0.36
0.29
Shear Modulus, GPa 19
19
Tensile Strength: Ultimate (UTS), MPa 53
220

Thermal Properties

Latent Heat of Fusion, J/g 61
330
Melting Completion (Liquidus), °C 220
550
Melting Onset (Solidus), °C 220
470
Specific Heat Capacity, J/kg-K 220
950
Thermal Conductivity, W/m-K 62
120
Thermal Expansion, µm/m-K 22
26

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 15
32
Electrical Conductivity: Equal Weight (Specific), % IACS 18
140

Otherwise Unclassified Properties

Density, g/cm3 7.4
2.1
Embodied Carbon, kg CO2/kg material 17
22
Embodied Energy, MJ/kg 290
150

Common Calculations

Stiffness to Weight: Axial, points 3.8
13
Stiffness to Weight: Bending, points 17
58
Strength to Weight: Axial, points 2.0
29
Strength to Weight: Bending, points 4.2
38
Thermal Diffusivity, mm2/s 38
58
Thermal Shock Resistance, points 3.4
12

Alloy Composition

Aluminum (Al), % 0 to 0.0010
0
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
Copper (Cu), % 0 to 0.050
2.4 to 3.0
Gold (Au), % 0 to 0.050
0
Indium (In), % 0 to 0.1
0
Iron (Fe), % 0 to 0.020
0
Lead (Pb), % 0 to 0.070
0
Magnesium (Mg), % 0
89.2 to 91.9
Manganese (Mn), % 0
0.25 to 0.75
Nickel (Ni), % 0 to 0.010
0 to 0.010
Silicon (Si), % 0
0 to 0.2
Silver (Ag), % 2.8 to 3.2
0
Tin (Sn), % 96.3 to 97.2
0
Zinc (Zn), % 0 to 0.0010
5.5 to 6.5
Residuals, % 0
0 to 0.3