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Solder Alloy 502 vs. AWS BAu-4

Both solder alloy 502 and AWS BAu-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. 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 solder alloy 502 and the bottom bar is AWS BAu-4.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 53
110
Poisson's Ratio 0.36
0.4
Shear Modulus, GPa 19
41
Tensile Strength: Ultimate (UTS), MPa 58
200

Thermal Properties

Latent Heat of Fusion, J/g 66
100
Melting Completion (Liquidus), °C 350
950
Melting Onset (Solidus), °C 220
950
Specific Heat Capacity, J/kg-K 230
190
Thermal Expansion, µm/m-K 22
14

Otherwise Unclassified Properties

Density, g/cm3 7.4
17

Common Calculations

Stiffness to Weight: Axial, points 4.0
3.6
Stiffness to Weight: Bending, points 17
9.3
Strength to Weight: Axial, points 2.2
3.2
Strength to Weight: Bending, points 4.5
4.4
Thermal Shock Resistance, points 3.6
9.2

Alloy Composition

Aluminum (Al), % 0 to 0.0010
0
Antimony (Sb), % 0 to 0.1
0
Arsenic (As), % 0 to 0.030
0
Bismuth (Bi), % 0 to 0.080
0
Cadmium (Cd), % 0 to 0.0020
0
Copper (Cu), % 3.5 to 4.5
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), % 0 to 0.070
0
Nickel (Ni), % 0 to 0.010
17.4 to 18.5
Silver (Ag), % 0.8 to 1.2
0
Tin (Sn), % 93.8 to 95.7
0
Zinc (Zn), % 0 to 0.0010
0
Residuals, % 0
0 to 0.15