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AWS BAu-3 vs. Solder Alloy 137

Both AWS BAu-3 and solder alloy 137 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 (10, in this case) are not shown.

For each property being compared, the top bar is AWS BAu-3 and the bottom bar is solder alloy 137.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
24
Poisson's Ratio 0.37
0.42
Shear Modulus, GPa 41
8.3
Tensile Strength: Ultimate (UTS), MPa 220
34

Thermal Properties

Latent Heat of Fusion, J/g 160
33
Melting Completion (Liquidus), °C 1030
270
Melting Onset (Solidus), °C 970
190
Specific Heat Capacity, J/kg-K 300
150
Thermal Expansion, µm/m-K 16
27

Otherwise Unclassified Properties

Density, g/cm3 13
10

Common Calculations

Stiffness to Weight: Axial, points 5.0
1.3
Stiffness to Weight: Bending, points 13
9.2
Strength to Weight: Axial, points 4.9
0.9
Strength to Weight: Bending, points 6.4
2.2
Thermal Shock Resistance, points 8.7
3.7

Alloy Composition


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Aluminum (Al), % 0
0 to 0.0010
Antimony (Sb), % 0
0.5 to 3.0
Arsenic (As), % 0
0 to 0.030
Bismuth (Bi), % 0
0 to 0.25
Cadmium (Cd), % 0
0 to 0.0050
Copper (Cu), % 60.9 to 63
0 to 0.080
Gold (Au), % 34.5 to 35.5
0 to 0.050
Indium (In), % 0
0 to 0.1
Iron (Fe), % 0
0 to 0.020
Lead (Pb), % 0
75.9 to 80
Nickel (Ni), % 2.5 to 3.5
0 to 0.010
Silver (Ag), % 0
0 to 0.1
Tin (Sn), % 0
19.5 to 20.5
Zinc (Zn), % 0
0 to 0.0010
Residuals, % 0 to 0.15
0