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AWS BVAg-31 vs. Solder Alloy 181

Both AWS BVAg-31 and solder alloy 181 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 AWS BVAg-31 and the bottom bar is solder alloy 181.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 90
18
Poisson's Ratio 0.36
0.44
Shear Modulus, GPa 33
6.1
Tensile Strength: Ultimate (UTS), MPa 180
27

Thermal Properties

Latent Heat of Fusion, J/g 150
26
Melting Completion (Liquidus), °C 850
310
Melting Onset (Solidus), °C 820
300
Specific Heat Capacity, J/kg-K 280
130
Thermal Expansion, µm/m-K 18
29

Otherwise Unclassified Properties

Density, g/cm3 10
11

Common Calculations

Stiffness to Weight: Axial, points 4.9
0.86
Stiffness to Weight: Bending, points 15
7.7
Strength to Weight: Axial, points 4.9
0.66
Strength to Weight: Bending, points 7.0
1.8
Thermal Shock Resistance, points 7.8
3.8

Alloy Composition

Aluminum (Al), % 0
0 to 0.0010
Antimony (Sb), % 0
0 to 0.2
Arsenic (As), % 0
0 to 0.030
Bismuth (Bi), % 0
0 to 0.1
Cadmium (Cd), % 0 to 0.0010
0 to 0.0020
Carbon (C), % 0 to 0.0050
0
Copper (Cu), % 31 to 33
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 to 0.0020
96.2 to 98
Nickel (Ni), % 0
0 to 0.010
Palladium (Pd), % 8.0 to 12
0
Phosphorus (P), % 0 to 0.0020
0
Silver (Ag), % 57 to 59
2.0 to 3.0
Tin (Sn), % 0
0 to 0.25
Zinc (Zn), % 0 to 0.0010
0 to 0.0010