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Solder Alloy 142 vs. Solder Alloy 301

Both solder alloy 142 and solder alloy 301 are otherwise unclassified metals. Both are furnished in the as-fabricated (no temper or treatment) condition. They have 45% of their average alloy composition in common. There are 22 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is solder alloy 142 and the bottom bar is solder alloy 301.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 33
40
Elongation at Break, % 37
51
Poisson's Ratio 0.4
0.34
Shear Modulus, GPa 12
15
Tensile Strength: Ultimate (UTS), MPa 43
55

Thermal Properties

Latent Heat of Fusion, J/g 42
55
Melting Completion (Liquidus), °C 210
140
Melting Onset (Solidus), °C 180
140
Specific Heat Capacity, J/kg-K 170
160
Thermal Conductivity, W/m-K 45
19
Thermal Expansion, µm/m-K 25
14

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 11
4.7
Electrical Conductivity: Equal Weight (Specific), % IACS 11
4.9

Otherwise Unclassified Properties

Density, g/cm3 9.3
8.7
Embodied Carbon, kg CO2/kg material 9.4
13
Embodied Energy, MJ/kg 160
210

Common Calculations

Stiffness to Weight: Axial, points 2.0
2.5
Stiffness to Weight: Bending, points 11
13
Strength to Weight: Axial, points 1.3
1.8
Strength to Weight: Bending, points 2.9
3.7
Thermal Diffusivity, mm2/s 28
13
Thermal Shock Resistance, points 3.7
7.2

Alloy Composition

Aluminum (Al), % 0 to 0.0010
0 to 0.0010
Antimony (Sb), % 0 to 0.2
0 to 0.1
Arsenic (As), % 0 to 0.030
0 to 0.030
Bismuth (Bi), % 2.5 to 3.5
56.5 to 59
Cadmium (Cd), % 0 to 0.0020
0 to 0.0020
Copper (Cu), % 0 to 0.080
0 to 0.050
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), % 47.4 to 50
0 to 0.070
Nickel (Ni), % 0 to 0.010
0 to 0.010
Silver (Ag), % 0 to 0.1
0 to 0.1
Tin (Sn), % 47.5 to 48.5
41 to 43
Zinc (Zn), % 0 to 0.0010
0 to 0.0010