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Solder Alloy 161 vs. SAE-AISI P21 Steel

Solder alloy 161 belongs to the otherwise unclassified metals classification, while SAE-AISI P21 steel belongs to the iron alloys. There are 22 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is solder alloy 161 and the bottom bar is SAE-AISI P21 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 38
190
Poisson's Ratio 0.39
0.29
Shear Modulus, GPa 14
73
Tensile Strength: Ultimate (UTS), MPa 53
1130

Thermal Properties

Latent Heat of Fusion, J/g 48
250
Melting Completion (Liquidus), °C 190
1450
Melting Onset (Solidus), °C 180
1410
Specific Heat Capacity, J/kg-K 190
470
Thermal Conductivity, W/m-K 49
41
Thermal Expansion, µm/m-K 25
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 11
7.9
Electrical Conductivity: Equal Weight (Specific), % IACS 11
9.0

Otherwise Unclassified Properties

Density, g/cm3 8.9
7.9
Embodied Carbon, kg CO2/kg material 11
2.3
Embodied Energy, MJ/kg 180
32
Embodied Water, L/kg 910
62

Common Calculations

Stiffness to Weight: Axial, points 2.4
13
Stiffness to Weight: Bending, points 13
24
Strength to Weight: Axial, points 1.7
40
Strength to Weight: Bending, points 3.5
31
Thermal Diffusivity, mm2/s 29
11
Thermal Shock Resistance, points 4.1
37

Alloy Composition

Aluminum (Al), % 0 to 0.0010
0
Antimony (Sb), % 0 to 0.2
0
Arsenic (As), % 0 to 0.030
0
Bismuth (Bi), % 0 to 0.1
0
Cadmium (Cd), % 0 to 0.0020
0
Carbon (C), % 0
0.18 to 0.22
Chromium (Cr), % 0
0 to 0.5
Cobalt (Co), % 0
1.1 to 1.3
Copper (Cu), % 1.2 to 1.6
0 to 0.25
Gold (Au), % 0 to 0.050
0
Indium (In), % 0 to 0.1
0
Iron (Fe), % 0 to 0.020
92.1 to 94.2
Lead (Pb), % 37.3 to 39.3
0
Manganese (Mn), % 0
0.35 to 0.72
Nickel (Ni), % 0 to 0.010
3.9 to 4.3
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0
0.2 to 0.4
Silver (Ag), % 0 to 0.1
0
Sulfur (S), % 0
0 to 0.030
Tin (Sn), % 59.5 to 60.5
0
Vanadium (V), % 0
0.15 to 0.25
Zinc (Zn), % 0 to 0.0010
0