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Solder Alloy 137 vs. S35140 Stainless Steel

Solder alloy 137 belongs to the otherwise unclassified metals classification, while S35140 stainless steel belongs to the iron alloys. There are 24 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is solder alloy 137 and the bottom bar is S35140 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 24
200
Elongation at Break, % 19
34
Poisson's Ratio 0.42
0.28
Shear Modulus, GPa 8.3
78
Tensile Strength: Ultimate (UTS), MPa 34
690

Thermal Properties

Latent Heat of Fusion, J/g 33
300
Melting Completion (Liquidus), °C 270
1420
Melting Onset (Solidus), °C 190
1370
Specific Heat Capacity, J/kg-K 150
470
Thermal Conductivity, W/m-K 38
14
Thermal Expansion, µm/m-K 27
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 8.9
1.7
Electrical Conductivity: Equal Weight (Specific), % IACS 7.7
1.9

Otherwise Unclassified Properties

Base Metal Price, % relative 85
31
Density, g/cm3 10
8.0
Embodied Carbon, kg CO2/kg material 6.3
5.5
Embodied Energy, MJ/kg 100
78
Embodied Water, L/kg 660
190

Common Calculations

Stiffness to Weight: Axial, points 1.3
14
Stiffness to Weight: Bending, points 9.2
24
Strength to Weight: Axial, points 0.9
24
Strength to Weight: Bending, points 2.2
22
Thermal Diffusivity, mm2/s 25
3.7
Thermal Shock Resistance, points 3.7
16

Alloy Composition

Aluminum (Al), % 0 to 0.0010
0
Antimony (Sb), % 0.5 to 3.0
0
Arsenic (As), % 0 to 0.030
0
Bismuth (Bi), % 0 to 0.25
0
Cadmium (Cd), % 0 to 0.0050
0
Carbon (C), % 0
0 to 0.1
Chromium (Cr), % 0
20 to 22
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
44.1 to 52.7
Lead (Pb), % 75.9 to 80
0
Manganese (Mn), % 0
1.0 to 3.0
Molybdenum (Mo), % 0
1.0 to 2.0
Nickel (Ni), % 0 to 0.010
25 to 27
Niobium (Nb), % 0
0.25 to 0.75
Nitrogen (N), % 0
0.080 to 0.2
Phosphorus (P), % 0
0 to 0.045
Silicon (Si), % 0
0 to 0.75
Silver (Ag), % 0 to 0.1
0
Sulfur (S), % 0
0 to 0.030
Tin (Sn), % 19.5 to 20.5
0
Zinc (Zn), % 0 to 0.0010
0