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Solder Alloy 151 vs. SAE-AISI 4161 Steel

Solder alloy 151 belongs to the otherwise unclassified metals classification, while SAE-AISI 4161 steel belongs to the iron alloys. There are 23 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is solder alloy 151 and the bottom bar is SAE-AISI 4161 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 39
190
Elongation at Break, % 37
20
Poisson's Ratio 0.37
0.29
Shear Modulus, GPa 14
73
Tensile Strength: Ultimate (UTS), MPa 46
680

Thermal Properties

Latent Heat of Fusion, J/g 47
250
Melting Completion (Liquidus), °C 150
1460
Melting Onset (Solidus), °C 150
1410
Specific Heat Capacity, J/kg-K 190
470
Thermal Conductivity, W/m-K 44
43
Thermal Expansion, µm/m-K 26
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 10
7.3
Electrical Conductivity: Equal Weight (Specific), % IACS 10
8.4

Otherwise Unclassified Properties

Density, g/cm3 8.8
7.8
Embodied Carbon, kg CO2/kg material 9.2
1.5
Embodied Energy, MJ/kg 160
20
Embodied Water, L/kg 920
50

Common Calculations

Stiffness to Weight: Axial, points 2.5
13
Stiffness to Weight: Bending, points 13
24
Strength to Weight: Axial, points 1.4
24
Strength to Weight: Bending, points 3.2
22
Thermal Diffusivity, mm2/s 26
12
Thermal Shock Resistance, points 3.2
22

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), % 17.5 to 18.5
0
Carbon (C), % 0
0.56 to 0.64
Chromium (Cr), % 0
0.7 to 0.9
Copper (Cu), % 0 to 0.080
0
Gold (Au), % 0 to 0.050
0
Indium (In), % 0 to 0.1
0
Iron (Fe), % 0 to 0.020
96.7 to 97.6
Lead (Pb), % 30.3 to 33
0
Manganese (Mn), % 0
0.75 to 1.0
Molybdenum (Mo), % 0
0.25 to 0.35
Nickel (Ni), % 0 to 0.010
0
Phosphorus (P), % 0
0 to 0.035
Silicon (Si), % 0
0.15 to 0.35
Silver (Ag), % 0 to 0.1
0
Sulfur (S), % 0
0 to 0.040
Tin (Sn), % 49.5 to 50.5
0
Zinc (Zn), % 0 to 0.0010
0