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Solder Alloy 181 vs. AWS BVAu-4

Both solder alloy 181 and AWS BVAu-4 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 BVAu-4.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 18
110
Poisson's Ratio 0.44
0.4
Shear Modulus, GPa 6.1
41
Tensile Strength: Ultimate (UTS), MPa 27
190

Thermal Properties

Latent Heat of Fusion, J/g 26
100
Melting Completion (Liquidus), °C 310
950
Melting Onset (Solidus), °C 300
950
Specific Heat Capacity, J/kg-K 130
190
Thermal Expansion, µm/m-K 29
14

Otherwise Unclassified Properties

Density, g/cm3 11
17

Common Calculations

Stiffness to Weight: Axial, points 0.86
3.6
Stiffness to Weight: Bending, points 7.7
9.3
Strength to Weight: Axial, points 0.66
3.0
Strength to Weight: Bending, points 1.8
4.2
Thermal Shock Resistance, points 3.8
8.7

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 to 0.0010
Carbon (C), % 0
0 to 0.0050
Copper (Cu), % 0 to 0.080
0
Gold (Au), % 0 to 0.050
81.5 to 82.5
Indium (In), % 0 to 0.1
0
Iron (Fe), % 0 to 0.020
0
Lead (Pb), % 96.2 to 98
0 to 0.0020
Nickel (Ni), % 0 to 0.010
17.5 to 18.5
Phosphorus (P), % 0
0 to 0.0020
Silver (Ag), % 2.0 to 3.0
0
Tin (Sn), % 0 to 0.25
0
Zinc (Zn), % 0 to 0.0010
0 to 0.0010