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Solder Alloy 181 vs. AWS BAu-5

Both solder alloy 181 and AWS BAu-5 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 (8, in this case) are not shown.

For each property being compared, the top bar is solder alloy 181 and the bottom bar is AWS BAu-5.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 18
140
Poisson's Ratio 0.44
0.37
Shear Modulus, GPa 6.1
50
Tensile Strength: Ultimate (UTS), MPa 27
210

Thermal Properties

Latent Heat of Fusion, J/g 26
180
Melting Completion (Liquidus), °C 310
1170
Melting Onset (Solidus), °C 300
1140
Specific Heat Capacity, J/kg-K 130
280
Thermal Expansion, µm/m-K 29
12

Otherwise Unclassified Properties

Density, g/cm3 11
13

Common Calculations

Stiffness to Weight: Axial, points 0.86
5.8
Stiffness to Weight: Bending, points 7.7
13
Strength to Weight: Axial, points 0.66
4.5
Strength to Weight: Bending, points 1.8
6.0
Thermal Shock Resistance, points 3.8
9.0

Alloy Composition

Aluminum (Al), % 0 to 0.0010
0
Antimony (Sb), % 0 to 0.2
0
Arsenic (As), % 0 to 0.030
0
Bismuth (Bi), % 0 to 0.1
0
Cadmium (Cd), % 0 to 0.0020
0
Copper (Cu), % 0 to 0.080
0
Gold (Au), % 0 to 0.050
29.5 to 30.5
Indium (In), % 0 to 0.1
0
Iron (Fe), % 0 to 0.020
0
Lead (Pb), % 96.2 to 98
0
Nickel (Ni), % 0 to 0.010
35.5 to 36.4
Palladium (Pd), % 0
33.5 to 34.5
Silver (Ag), % 2.0 to 3.0
0
Tin (Sn), % 0 to 0.25
0
Zinc (Zn), % 0 to 0.0010
0
Residuals, % 0
0 to 0.15