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Solder Alloy 171 vs. ISO-WD32250 Magnesium

Solder alloy 171 belongs to the otherwise unclassified metals classification, while ISO-WD32250 magnesium belongs to the magnesium alloys. There are 22 material properties with values for both materials. Properties with values for just one material (9, 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 171 and the bottom bar is ISO-WD32250 magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 38
45
Elongation at Break, % 45
4.5 to 8.6
Poisson's Ratio 0.39
0.29
Shear Modulus, GPa 14
17
Tensile Strength: Ultimate (UTS), MPa 48
310 to 330

Thermal Properties

Latent Heat of Fusion, J/g 47
340
Melting Completion (Liquidus), °C 180
600
Melting Onset (Solidus), °C 180
550
Specific Heat Capacity, J/kg-K 190
980
Thermal Conductivity, W/m-K 50
130
Thermal Expansion, µm/m-K 24
26

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 12
25
Electrical Conductivity: Equal Weight (Specific), % IACS 12
130

Otherwise Unclassified Properties

Density, g/cm3 8.8
1.8
Embodied Carbon, kg CO2/kg material 13
24
Embodied Energy, MJ/kg 210
160

Common Calculations

Stiffness to Weight: Axial, points 2.4
14
Stiffness to Weight: Bending, points 13
67
Strength to Weight: Axial, points 1.5
49 to 51
Strength to Weight: Bending, points 3.3
58 to 60
Thermal Diffusivity, mm2/s 30
72
Thermal Shock Resistance, points 3.7
19 to 20

Alloy Composition

Aluminum (Al), % 0 to 0.0010
0
Antimony (Sb), % 0 to 0.2
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 0.080
0
Gold (Au), % 0 to 0.050
0
Indium (In), % 0 to 0.1
0
Iron (Fe), % 0 to 0.020
0
Lead (Pb), % 34.7 to 36.7
0
Magnesium (Mg), % 0
94.9 to 97.1
Nickel (Ni), % 0 to 0.010
0
Silver (Ag), % 1.8 to 2.2
0
Tin (Sn), % 61.5 to 62.5
0
Zinc (Zn), % 0 to 0.0010
2.5 to 4.0
Zirconium (Zr), % 0
0.45 to 0.8
Residuals, % 0
0 to 0.3