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EN-MC21320 Magnesium vs. Solder Alloy 122

EN-MC21320 magnesium belongs to the magnesium alloys classification, while solder alloy 122 belongs to the otherwise unclassified metals. There are 25 material properties with values for both materials. Properties with values for just one material (6, 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-MC21320 magnesium and the bottom bar is solder alloy 122.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 68
10
Elastic (Young's, Tensile) Modulus, GPa 45
20
Elongation at Break, % 7.5
30
Poisson's Ratio 0.29
0.43
Shear Modulus, GPa 18
6.9
Tensile Strength: Ultimate (UTS), MPa 230
30

Thermal Properties

Latent Heat of Fusion, J/g 370
27
Melting Completion (Liquidus), °C 600
300
Melting Onset (Solidus), °C 530
270
Specific Heat Capacity, J/kg-K 1000
140
Thermal Conductivity, W/m-K 66
25
Thermal Expansion, µm/m-K 26
28

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 17
8.9
Electrical Conductivity: Equal Weight (Specific), % IACS 91
7.3

Otherwise Unclassified Properties

Base Metal Price, % relative 12
75
Density, g/cm3 1.6
11
Embodied Carbon, kg CO2/kg material 23
5.0
Embodied Energy, MJ/kg 160
84
Embodied Water, L/kg 980
540

Common Calculations

Stiffness to Weight: Axial, points 15
1.0
Stiffness to Weight: Bending, points 72
8.2
Strength to Weight: Axial, points 38
0.77
Strength to Weight: Bending, points 50
2.0
Thermal Diffusivity, mm2/s 40
17
Thermal Shock Resistance, points 13
3.9

Alloy Composition


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Aluminum (Al), % 3.5 to 5.0
0 to 0.0010
Antimony (Sb), % 0
0 to 0.5
Arsenic (As), % 0
0 to 0.030
Bismuth (Bi), % 0
0 to 0.25
Cadmium (Cd), % 0
0 to 0.0050
Copper (Cu), % 0 to 0.010
0 to 0.080
Gold (Au), % 0
0 to 0.050
Indium (In), % 0
0 to 0.1
Iron (Fe), % 0 to 0.0050
0 to 0.020
Lead (Pb), % 0
88.4 to 90.5
Magnesium (Mg), % 92.5 to 95.9
0
Manganese (Mn), % 0.1 to 0.7
0
Nickel (Ni), % 0 to 0.0020
0 to 0.010
Silicon (Si), % 0.5 to 1.5
0
Silver (Ag), % 0
0 to 0.1
Tin (Sn), % 0
9.5 to 10.5
Zinc (Zn), % 0 to 0.2
0 to 0.0010
Residuals, % 0 to 0.010
0