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AWS BMg-1 vs. Solder Alloy 701

AWS BMg-1 belongs to the magnesium alloys classification, while solder alloy 701 belongs to the otherwise unclassified metals. There are 22 material properties with values for both materials. Properties with values for just one material (9, 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 AWS BMg-1 and the bottom bar is solder alloy 701.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 47
51
Elongation at Break, % 3.8
37
Poisson's Ratio 0.29
0.36
Shear Modulus, GPa 18
19
Tensile Strength: Ultimate (UTS), MPa 180
54

Thermal Properties

Latent Heat of Fusion, J/g 350
61
Melting Completion (Liquidus), °C 600
230
Melting Onset (Solidus), °C 440
220
Specific Heat Capacity, J/kg-K 980
220
Thermal Conductivity, W/m-K 76
52
Thermal Expansion, µm/m-K 26
22

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 11
14
Electrical Conductivity: Equal Weight (Specific), % IACS 55
17

Otherwise Unclassified Properties

Density, g/cm3 1.8
7.4
Embodied Carbon, kg CO2/kg material 22
18
Embodied Energy, MJ/kg 160
300

Common Calculations

Stiffness to Weight: Axial, points 14
3.8
Stiffness to Weight: Bending, points 66
17
Strength to Weight: Axial, points 27
2.0
Strength to Weight: Bending, points 39
4.3
Thermal Diffusivity, mm2/s 43
32
Thermal Shock Resistance, points 10
3.5

Alloy Composition


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Aluminum (Al), % 8.3 to 9.7
0 to 0.0010
Antimony (Sb), % 0
0 to 0.1
Arsenic (As), % 0
0 to 0.030
Beryllium (Be), % 0.00020 to 0.00080
0
Bismuth (Bi), % 0
0 to 0.1
Cadmium (Cd), % 0
0 to 0.0020
Copper (Cu), % 0 to 0.050
0 to 0.050
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
0 to 0.070
Magnesium (Mg), % 86.1 to 89.8
0
Manganese (Mn), % 0.15 to 1.5
0
Nickel (Ni), % 0 to 0.0050
0 to 0.010
Silicon (Si), % 0 to 0.050
0
Silver (Ag), % 0
3.5 to 3.9
Tin (Sn), % 0
95.6 to 96.5
Zinc (Zn), % 1.7 to 2.3
0 to 0.0010
Residuals, % 0 to 0.3
0