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Solder Alloy 137 vs. S31277 Stainless Steel

Solder alloy 137 belongs to the otherwise unclassified metals classification, while S31277 stainless steel belongs to the iron alloys. There are 20 material properties with values for both materials. Properties with values for just one material (12, in this case) are not shown.

For each property being compared, the top bar is solder alloy 137 and the bottom bar is S31277 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 24
210
Elongation at Break, % 19
45
Poisson's Ratio 0.42
0.28
Shear Modulus, GPa 8.3
80
Tensile Strength: Ultimate (UTS), MPa 34
860

Thermal Properties

Latent Heat of Fusion, J/g 33
310
Melting Completion (Liquidus), °C 270
1460
Melting Onset (Solidus), °C 190
1410
Specific Heat Capacity, J/kg-K 150
460
Thermal Expansion, µm/m-K 27
16

Otherwise Unclassified Properties

Base Metal Price, % relative 85
36
Density, g/cm3 10
8.1
Embodied Carbon, kg CO2/kg material 6.3
6.7
Embodied Energy, MJ/kg 100
90
Embodied Water, L/kg 660
220

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
29
Strength to Weight: Bending, points 2.2
25
Thermal Shock Resistance, points 3.7
19

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 0.020
Chromium (Cr), % 0
20.5 to 23
Copper (Cu), % 0 to 0.080
0.5 to 1.5
Gold (Au), % 0 to 0.050
0
Indium (In), % 0 to 0.1
0
Iron (Fe), % 0 to 0.020
35.5 to 46.2
Lead (Pb), % 75.9 to 80
0
Manganese (Mn), % 0
0 to 3.0
Molybdenum (Mo), % 0
6.5 to 8.0
Nickel (Ni), % 0 to 0.010
26 to 28
Nitrogen (N), % 0
0.3 to 0.4
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0
0 to 0.5
Silver (Ag), % 0 to 0.1
0
Sulfur (S), % 0
0 to 0.010
Tin (Sn), % 19.5 to 20.5
0
Zinc (Zn), % 0 to 0.0010
0