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Solder Alloy 801 vs. Solder Alloy 502

Both solder alloy 801 and solder alloy 502 are otherwise unclassified metals. Both are furnished in the as-fabricated (no temper or treatment) condition. They have a moderately high 91% of their average alloy composition in common. There are 22 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is solder alloy 801 and the bottom bar is solder alloy 502.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 53
53
Elongation at Break, % 33
34
Poisson's Ratio 0.35
0.36
Shear Modulus, GPa 20
19
Tensile Strength: Ultimate (UTS), MPa 55
58

Thermal Properties

Latent Heat of Fusion, J/g 64
66
Melting Completion (Liquidus), °C 200
350
Melting Onset (Solidus), °C 200
220
Specific Heat Capacity, J/kg-K 240
230
Thermal Conductivity, W/m-K 61
47
Thermal Expansion, µm/m-K 22
22

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 15
12
Electrical Conductivity: Equal Weight (Specific), % IACS 19
15

Otherwise Unclassified Properties

Density, g/cm3 7.2
7.4
Embodied Carbon, kg CO2/kg material 14
15
Embodied Energy, MJ/kg 240
260

Common Calculations

Stiffness to Weight: Axial, points 4.1
4.0
Stiffness to Weight: Bending, points 17
17
Strength to Weight: Axial, points 2.1
2.2
Strength to Weight: Bending, points 4.4
4.5
Thermal Diffusivity, mm2/s 36
28
Thermal Shock Resistance, points 3.3
3.6

Alloy Composition

Aluminum (Al), % 0 to 0.0010
0 to 0.0010
Antimony (Sb), % 0 to 0.1
0 to 0.1
Arsenic (As), % 0 to 0.030
0 to 0.030
Bismuth (Bi), % 0 to 0.1
0 to 0.080
Cadmium (Cd), % 0 to 0.0020
0 to 0.0020
Copper (Cu), % 0 to 0.050
3.5 to 4.5
Gold (Au), % 0 to 0.050
0 to 0.050
Indium (In), % 0 to 0.1
0 to 0.1
Iron (Fe), % 0 to 0.020
0 to 0.020
Lead (Pb), % 0 to 0.070
0 to 0.070
Nickel (Ni), % 0 to 0.010
0 to 0.010
Silver (Ag), % 0 to 0.1
0.8 to 1.2
Tin (Sn), % 89.9 to 91.5
93.8 to 95.7
Zinc (Zn), % 8.5 to 9.5
0 to 0.0010