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Solder Alloy 135 vs. ISO-WD21150 Magnesium

Solder alloy 135 belongs to the otherwise unclassified metals classification, while ISO-WD21150 magnesium belongs to the magnesium alloys. There are 24 material properties with values for both materials. Properties with values for just one material (5, 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 135 and the bottom bar is ISO-WD21150 magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 27
45
Elongation at Break, % 20
5.7 to 11
Poisson's Ratio 0.41
0.29
Shear Modulus, GPa 9.5
17
Tensile Strength: Ultimate (UTS), MPa 35
240 to 290

Thermal Properties

Latent Heat of Fusion, J/g 36
350
Melting Completion (Liquidus), °C 250
600
Melting Onset (Solidus), °C 190
550
Specific Heat Capacity, J/kg-K 160
990
Thermal Conductivity, W/m-K 42
100
Thermal Expansion, µm/m-K 27
27

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 9.5
19
Electrical Conductivity: Equal Weight (Specific), % IACS 8.5
100

Otherwise Unclassified Properties

Base Metal Price, % relative 90
12
Density, g/cm3 10
1.7
Embodied Carbon, kg CO2/kg material 7.3
23
Embodied Energy, MJ/kg 120
160
Embodied Water, L/kg 720
980

Common Calculations

Stiffness to Weight: Axial, points 1.5
15
Stiffness to Weight: Bending, points 9.9
70
Strength to Weight: Axial, points 1.0
40 to 48
Strength to Weight: Bending, points 2.4
52 to 58
Thermal Diffusivity, mm2/s 27
60
Thermal Shock Resistance, points 3.5
15 to 17

Alloy Composition

Aluminum (Al), % 0 to 0.0010
2.4 to 3.6
Antimony (Sb), % 0.5 to 1.8
0
Arsenic (As), % 0 to 0.030
0
Bismuth (Bi), % 0 to 0.25
0
Cadmium (Cd), % 0 to 0.0050
0
Copper (Cu), % 0 to 0.080
0 to 0.050
Gold (Au), % 0 to 0.050
0
Indium (In), % 0 to 0.1
0
Iron (Fe), % 0 to 0.020
0 to 0.0050
Lead (Pb), % 67.1 to 70
0
Magnesium (Mg), % 0
94 to 97
Manganese (Mn), % 0
0.15 to 0.4
Nickel (Ni), % 0 to 0.010
0 to 0.0050
Silicon (Si), % 0
0 to 0.1
Silver (Ag), % 0 to 0.1
0
Tin (Sn), % 29.5 to 30.5
0
Zinc (Zn), % 0 to 0.0010
0.5 to 1.5
Residuals, % 0
0 to 0.3