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Solder Alloy 131 vs. SAE-AISI 50B50 Steel

Solder alloy 131 belongs to the otherwise unclassified metals classification, while SAE-AISI 50B50 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 131 and the bottom bar is SAE-AISI 50B50 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 38
190
Elongation at Break, % 47
22
Poisson's Ratio 0.39
0.29
Shear Modulus, GPa 14
73
Tensile Strength: Ultimate (UTS), MPa 31
590

Thermal Properties

Latent Heat of Fusion, J/g 46
250
Melting Completion (Liquidus), °C 180
1460
Melting Onset (Solidus), °C 180
1410
Specific Heat Capacity, J/kg-K 190
470
Thermal Conductivity, W/m-K 55
45
Thermal Expansion, µm/m-K 25
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 11
7.2
Electrical Conductivity: Equal Weight (Specific), % IACS 12
8.3

Otherwise Unclassified Properties

Density, g/cm3 8.8
7.8
Embodied Carbon, kg CO2/kg material 11
1.4
Embodied Energy, MJ/kg 180
19
Embodied Water, L/kg 940
48

Common Calculations

Stiffness to Weight: Axial, points 2.4
13
Stiffness to Weight: Bending, points 13
24
Strength to Weight: Axial, points 1.0
21
Strength to Weight: Bending, points 2.5
20
Thermal Diffusivity, mm2/s 33
12
Thermal Shock Resistance, points 2.4
17

Alloy Composition

Aluminum (Al), % 0 to 0.0010
0
Antimony (Sb), % 0.2 to 0.5
0
Arsenic (As), % 0 to 0.030
0
Bismuth (Bi), % 0 to 0.1
0
Boron (B), % 0
0.00050 to 0.0030
Cadmium (Cd), % 0 to 0.0020
0
Carbon (C), % 0
0.48 to 0.53
Chromium (Cr), % 0
0.4 to 0.6
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
97.4 to 98.2
Lead (Pb), % 35.5 to 37.3
0
Manganese (Mn), % 0
0.75 to 1.0
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), % 62.5 to 63.5
0
Zinc (Zn), % 0 to 0.0010
0