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AWS BAu-1 vs. Solder Alloy 123

Both AWS BAu-1 and solder alloy 123 are otherwise unclassified metals. Both are furnished in the as-fabricated (no temper or treatment) condition. There are 15 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown.

For each property being compared, the top bar is AWS BAu-1 and the bottom bar is solder alloy 123.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
18
Poisson's Ratio 0.37
0.44
Shear Modulus, GPa 40
6.2
Tensile Strength: Ultimate (UTS), MPa 210
28

Thermal Properties

Latent Heat of Fusion, J/g 150
26
Melting Completion (Liquidus), °C 1020
310
Melting Onset (Solidus), °C 990
300
Specific Heat Capacity, J/kg-K 290
130
Thermal Expansion, µm/m-K 16
29

Otherwise Unclassified Properties

Density, g/cm3 13
11

Common Calculations

Stiffness to Weight: Axial, points 4.7
0.9
Stiffness to Weight: Bending, points 12
7.8
Strength to Weight: Axial, points 4.5
0.69
Strength to Weight: Bending, points 6.1
1.8
Thermal Shock Resistance, points 8.5
3.8

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 0.1
Cadmium (Cd), % 0
0 to 0.0050
Copper (Cu), % 61.9 to 63
0 to 0.080
Gold (Au), % 37 to 38
0 to 0.050
Indium (In), % 0
0 to 0.1
Iron (Fe), % 0
0 to 0.020
Lead (Pb), % 0
93.5 to 95.5
Nickel (Ni), % 0
0 to 0.010
Silver (Ag), % 0
0 to 0.1
Tin (Sn), % 0
4.5 to 5.5
Zinc (Zn), % 0
0 to 0.0010
Residuals, % 0 to 0.15
0