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Solder Alloy 104 vs. Solder Alloy 503

Both solder alloy 104 and solder alloy 503 are otherwise unclassified metals. Both are furnished in the as-fabricated (no temper or treatment) condition. They have 60% of their average alloy composition in common. There are 22 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is solder alloy 104 and the bottom bar is solder alloy 503.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 37
54
Elongation at Break, % 46
30
Poisson's Ratio 0.39
0.36
Shear Modulus, GPa 13
20
Tensile Strength: Ultimate (UTS), MPa 51
57

Thermal Properties

Latent Heat of Fusion, J/g 45
69
Melting Completion (Liquidus), °C 190
380
Melting Onset (Solidus), °C 180
220
Specific Heat Capacity, J/kg-K 180
230
Thermal Conductivity, W/m-K 50
61
Thermal Expansion, µm/m-K 25
22

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 11
14
Electrical Conductivity: Equal Weight (Specific), % IACS 11
17

Otherwise Unclassified Properties

Density, g/cm3 8.9
7.5
Embodied Carbon, kg CO2/kg material 10
16
Embodied Energy, MJ/kg 180
270

Common Calculations

Stiffness to Weight: Axial, points 2.3
4.1
Stiffness to Weight: Bending, points 12
17
Strength to Weight: Axial, points 1.6
2.1
Strength to Weight: Bending, points 3.4
4.4
Thermal Diffusivity, mm2/s 30
35
Thermal Shock Resistance, points 4.0
3.5

Alloy Composition

Aluminum (Al), % 0 to 0.0010
0 to 0.0010
Antimony (Sb), % 0 to 0.050
0 to 0.1
Arsenic (As), % 0 to 0.030
0 to 0.030
Bismuth (Bi), % 0 to 0.050
0 to 0.080
Cadmium (Cd), % 0 to 0.0020
0 to 0.0020
Copper (Cu), % 0 to 0.080
5.5 to 6.5
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), % 39 to 40.5
0 to 0.070
Nickel (Ni), % 0 to 0.010
0 to 0.010
Silver (Ag), % 0 to 0.1
1.8 to 2.2
Tin (Sn), % 59.5 to 60.5
90.8 to 92.7
Zinc (Zn), % 0 to 0.0010
0 to 0.0010