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AWS BAg-20 vs. Solder Alloy 121

Both AWS BAg-20 and solder alloy 121 are otherwise unclassified metals. Both are furnished in the as-fabricated (no temper or treatment) condition. There are 17 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

For each property being compared, the top bar is AWS BAg-20 and the bottom bar is solder alloy 121.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 93
21
Poisson's Ratio 0.32
0.43
Shear Modulus, GPa 35
7.5
Tensile Strength: Ultimate (UTS), MPa 160
32

Thermal Properties

Latent Heat of Fusion, J/g 150
29
Melting Completion (Liquidus), °C 770
290
Melting Onset (Solidus), °C 680
230
Specific Heat Capacity, J/kg-K 340
140
Thermal Expansion, µm/m-K 21
28

Otherwise Unclassified Properties

Density, g/cm3 8.6
11
Embodied Carbon, kg CO2/kg material 30
5.6
Embodied Energy, MJ/kg 480
93

Common Calculations

Stiffness to Weight: Axial, points 6.0
1.1
Stiffness to Weight: Bending, points 17
8.6
Strength to Weight: Axial, points 5.1
0.84
Strength to Weight: Bending, points 7.6
2.1
Thermal Shock Resistance, points 5.9
3.9

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), % 37 to 39
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
83.4 to 85.5
Nickel (Ni), % 0
0 to 0.010
Silver (Ag), % 29 to 31
0 to 0.1
Tin (Sn), % 0
14.5 to 15.5
Zinc (Zn), % 30 to 34
0 to 0.0010
Residuals, % 0 to 0.15
0