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EQ21A Magnesium vs. Solder Alloy 116

EQ21A magnesium belongs to the magnesium alloys classification, while solder alloy 116 belongs to the otherwise unclassified metals. There are 24 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 EQ21A magnesium and the bottom bar is solder alloy 116.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 80
12
Elastic (Young's, Tensile) Modulus, GPa 44
26
Elongation at Break, % 2.4
18
Poisson's Ratio 0.29
0.42
Shear Modulus, GPa 17
9.3
Tensile Strength: Ultimate (UTS), MPa 250
34

Thermal Properties

Latent Heat of Fusion, J/g 340
34
Melting Completion (Liquidus), °C 640
260
Melting Onset (Solidus), °C 560
180
Specific Heat Capacity, J/kg-K 980
160
Thermal Conductivity, W/m-K 110
41
Thermal Expansion, µm/m-K 27
27

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 25
9.3
Electrical Conductivity: Equal Weight (Specific), % IACS 120
8.3

Otherwise Unclassified Properties

Base Metal Price, % relative 80
90
Density, g/cm3 1.9
10
Embodied Carbon, kg CO2/kg material 27
7.2
Embodied Energy, MJ/kg 210
120

Common Calculations

Stiffness to Weight: Axial, points 13
1.5
Stiffness to Weight: Bending, points 63
9.8
Strength to Weight: Axial, points 37
0.94
Strength to Weight: Bending, points 47
2.3
Thermal Diffusivity, mm2/s 62
26
Thermal Shock Resistance, points 15
3.4

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 0.25
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
0 to 0.020
Lead (Pb), % 0
68.4 to 70.5
Magnesium (Mg), % 93.9 to 96.8
0
Nickel (Ni), % 0 to 0.010
0 to 0.010
Silver (Ag), % 1.3 to 1.7
0 to 0.1
Tin (Sn), % 0
29.5 to 30.5
Unspecified Rare Earths, % 1.5 to 3.0
0
Zinc (Zn), % 0
0 to 0.0010
Zirconium (Zr), % 0.4 to 1.0
0
Residuals, % 0 to 0.3
0