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EN-MC65220 Magnesium vs. Solder Alloy 123

EN-MC65220 magnesium belongs to the magnesium alloys classification, while solder alloy 123 belongs to the otherwise unclassified metals. There are 24 material properties with values for both materials. Properties with values for just one material (7, 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 EN-MC65220 magnesium and the bottom bar is solder alloy 123.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 80
8.0
Elastic (Young's, Tensile) Modulus, GPa 44
18
Elongation at Break, % 2.2
45
Poisson's Ratio 0.29
0.44
Shear Modulus, GPa 17
6.2
Tensile Strength: Ultimate (UTS), MPa 270
28

Thermal Properties

Latent Heat of Fusion, J/g 340
26
Melting Completion (Liquidus), °C 610
310
Melting Onset (Solidus), °C 550
300
Specific Heat Capacity, J/kg-K 980
130
Thermal Conductivity, W/m-K 110
23
Thermal Expansion, µm/m-K 26
29

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 25
8.8
Electrical Conductivity: Equal Weight (Specific), % IACS 120
7.1

Otherwise Unclassified Properties

Base Metal Price, % relative 80
75
Density, g/cm3 1.9
11
Embodied Carbon, kg CO2/kg material 27
4.5
Embodied Energy, MJ/kg 210
74

Common Calculations

Stiffness to Weight: Axial, points 13
0.9
Stiffness to Weight: Bending, points 62
7.8
Strength to Weight: Axial, points 40
0.69
Strength to Weight: Bending, points 49
1.8
Thermal Diffusivity, mm2/s 61
16
Thermal Shock Resistance, points 17
3.8

Alloy Composition


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Aluminum (Al), % 0
0 to 0.0010
Antimony (Sb), % 0
0 to 0.5
Arsenic (As), % 0
0 to 0.030
Bismuth (Bi), % 0
0 to 0.1
Cadmium (Cd), % 0
0 to 0.0050
Copper (Cu), % 0.050 to 0.1
0 to 0.080
Gold (Au), % 0
0 to 0.050
Indium (In), % 0
0 to 0.1
Iron (Fe), % 0 to 0.010
0 to 0.020
Lead (Pb), % 0
93.5 to 95.5
Magnesium (Mg), % 93.8 to 96.8
0
Manganese (Mn), % 0 to 0.15
0
Nickel (Ni), % 0 to 0.0050
0 to 0.010
Silicon (Si), % 0 to 0.010
0
Silver (Ag), % 1.3 to 1.7
0 to 0.1
Tin (Sn), % 0
4.5 to 5.5
Unspecified Rare Earths, % 1.5 to 3.0
0
Zinc (Zn), % 0 to 0.2
0 to 0.0010
Zirconium (Zr), % 0.4 to 1.0
0
Residuals, % 0 to 0.010
0