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Solder Alloy 811 vs. QE22A Magnesium

Solder alloy 811 belongs to the otherwise unclassified metals classification, while QE22A magnesium belongs to the magnesium alloys. There are 22 material properties with values for both materials. Properties with values for just one material (11, 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 811 and the bottom bar is QE22A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 52
44
Elongation at Break, % 38
2.4
Poisson's Ratio 0.35
0.29
Shear Modulus, GPa 19
17
Tensile Strength: Ultimate (UTS), MPa 53
250

Thermal Properties

Latent Heat of Fusion, J/g 63
340
Melting Completion (Liquidus), °C 200
640
Melting Onset (Solidus), °C 190
570
Specific Heat Capacity, J/kg-K 230
970
Thermal Conductivity, W/m-K 59
110
Thermal Expansion, µm/m-K 22
27

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 14
25
Electrical Conductivity: Equal Weight (Specific), % IACS 17
120

Otherwise Unclassified Properties

Density, g/cm3 7.3
2.0
Embodied Carbon, kg CO2/kg material 14
27
Embodied Energy, MJ/kg 240
220

Common Calculations

Stiffness to Weight: Axial, points 4.0
13
Stiffness to Weight: Bending, points 17
60
Strength to Weight: Axial, points 2.0
36
Strength to Weight: Bending, points 4.3
46
Thermal Diffusivity, mm2/s 35
59
Thermal Shock Resistance, points 3.3
15

Alloy Composition

Aluminum (Al), % 0 to 0.0010
0
Antimony (Sb), % 0 to 0.1
0
Arsenic (As), % 0 to 0.030
0
Bismuth (Bi), % 2.8 to 3.2
0
Cadmium (Cd), % 0 to 0.0020
0
Copper (Cu), % 0 to 0.050
0 to 0.1
Gold (Au), % 0 to 0.050
0
Indium (In), % 0 to 0.1
0
Iron (Fe), % 0 to 0.020
0
Lead (Pb), % 0 to 0.070
0
Magnesium (Mg), % 0
93.1 to 95.8
Nickel (Ni), % 0 to 0.010
0 to 0.010
Silver (Ag), % 0 to 0.1
2.0 to 3.0
Tin (Sn), % 87.8 to 89.7
0
Unspecified Rare Earths, % 0
1.8 to 2.5
Zinc (Zn), % 7.5 to 8.5
0
Zirconium (Zr), % 0
0.4 to 1.0
Residuals, % 0
0 to 0.3