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AWS BVAu-7 vs. Solder Alloy 402

Both AWS BVAu-7 and solder alloy 402 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 (9, in this case) are not shown. Please note that the two materials have significantly dissimilar densities. This means that additional care is required when interpreting the data, because some material properties are based on units of mass, while others are based on units of area or volume.

For each property being compared, the top bar is AWS BVAu-7 and the bottom bar is solder alloy 402.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 130
52
Poisson's Ratio 0.38
0.36
Shear Modulus, GPa 45
19
Tensile Strength: Ultimate (UTS), MPa 200
57

Thermal Properties

Latent Heat of Fusion, J/g 140
64
Melting Completion (Liquidus), °C 1120
310
Melting Onset (Solidus), °C 1100
230
Specific Heat Capacity, J/kg-K 240
230
Thermal Expansion, µm/m-K 13
22

Otherwise Unclassified Properties

Density, g/cm3 15
7.3

Common Calculations

Stiffness to Weight: Axial, points 4.7
3.9
Stiffness to Weight: Bending, points 11
17
Strength to Weight: Axial, points 3.7
2.2
Strength to Weight: Bending, points 5.1
4.5
Thermal Shock Resistance, points 8.9
3.6

Alloy Composition

Aluminum (Al), % 0
0 to 0.0010
Antimony (Sb), % 0
0 to 0.1
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
Cobalt (Co), % 0 to 0.060
0
Copper (Cu), % 0
2.5 to 3.5
Gold (Au), % 49.5 to 50.5
0 to 0.050
Indium (In), % 0
0 to 0.1
Iron (Fe), % 0
0 to 0.020
Lead (Pb), % 0 to 0.0020
0 to 0.070
Nickel (Ni), % 24.5 to 25.5
0 to 0.010
Palladium (Pd), % 23.9 to 26
0
Phosphorus (P), % 0 to 0.0020
0
Silver (Ag), % 0
0 to 0.1
Tin (Sn), % 0
95.9 to 97.5
Zinc (Zn), % 0 to 0.0010
0 to 0.0010