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Solder Alloy 201 vs. Solder Alloy 124

Both solder alloy 201 and solder alloy 124 are otherwise unclassified metals. Both are furnished in the as-fabricated (no temper or treatment) condition. There are 23 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 201 and the bottom bar is solder alloy 124.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 50
17
Elongation at Break, % 38
46
Poisson's Ratio 0.35
0.44
Shear Modulus, GPa 19
5.8
Tensile Strength: Ultimate (UTS), MPa 41
27

Thermal Properties

Latent Heat of Fusion, J/g 64
24
Melting Completion (Liquidus), °C 240
330
Melting Onset (Solidus), °C 240
320
Specific Heat Capacity, J/kg-K 220
130
Thermal Conductivity, W/m-K 28
22
Thermal Expansion, µm/m-K 21
29

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 12
9.6
Electrical Conductivity: Equal Weight (Specific), % IACS 15
7.7

Otherwise Unclassified Properties

Density, g/cm3 7.3
11
Embodied Carbon, kg CO2/kg material 15
4.1
Embodied Energy, MJ/kg 250
68
Embodied Water, L/kg 1320
470

Common Calculations

Stiffness to Weight: Axial, points 3.8
0.83
Stiffness to Weight: Bending, points 17
7.6
Strength to Weight: Axial, points 1.6
0.65
Strength to Weight: Bending, points 3.6
1.8
Thermal Diffusivity, mm2/s 17
15
Thermal Shock Resistance, points 2.7
3.9

Alloy Composition

Aluminum (Al), % 0 to 0.0010
0 to 0.0010
Antimony (Sb), % 4.5 to 5.5
0 to 0.12
Arsenic (As), % 0 to 0.030
0 to 0.030
Bismuth (Bi), % 0 to 0.1
0 to 0.1
Cadmium (Cd), % 0 to 0.0020
0 to 0.0020
Copper (Cu), % 0 to 0.050
0 to 0.080
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
97.2 to 98.2
Nickel (Ni), % 0 to 0.010
0 to 0.010
Silver (Ag), % 0 to 0.1
0 to 0.1
Tin (Sn), % 94 to 95.5
1.8 to 2.2
Zinc (Zn), % 0 to 0.0010
0 to 0.0010