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Solder Alloy 131 vs. SAE-AISI 5140 Steel

Solder alloy 131 belongs to the otherwise unclassified metals classification, while SAE-AISI 5140 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 5140 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 38
190
Elongation at Break, % 47
12 to 29
Poisson's Ratio 0.39
0.29
Shear Modulus, GPa 14
73
Tensile Strength: Ultimate (UTS), MPa 31
560 to 970

Thermal Properties

Latent Heat of Fusion, J/g 46
250
Melting Completion (Liquidus), °C 180
1460
Melting Onset (Solidus), °C 180
1420
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
49

Common Calculations

Stiffness to Weight: Axial, points 2.4
13
Stiffness to Weight: Bending, points 13
24
Strength to Weight: Axial, points 1.0
20 to 34
Strength to Weight: Bending, points 2.5
19 to 28
Thermal Diffusivity, mm2/s 33
12
Thermal Shock Resistance, points 2.4
16 to 29

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
Cadmium (Cd), % 0 to 0.0020
0
Carbon (C), % 0
0.38 to 0.43
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
97.3 to 98.1
Lead (Pb), % 35.5 to 37.3
0
Manganese (Mn), % 0
0.7 to 0.9
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