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Solder Alloy 131 vs. S31266 Stainless Steel

Solder alloy 131 belongs to the otherwise unclassified metals classification, while S31266 stainless steel belongs to the iron alloys. There are 23 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 131 and the bottom bar is S31266 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 38
210
Elongation at Break, % 47
40
Poisson's Ratio 0.39
0.28
Shear Modulus, GPa 14
81
Tensile Strength: Ultimate (UTS), MPa 31
860

Thermal Properties

Latent Heat of Fusion, J/g 46
310
Melting Completion (Liquidus), °C 180
1470
Melting Onset (Solidus), °C 180
1420
Specific Heat Capacity, J/kg-K 190
460
Thermal Conductivity, W/m-K 55
12
Thermal Expansion, µm/m-K 25
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 11
1.8
Electrical Conductivity: Equal Weight (Specific), % IACS 12
2.0

Otherwise Unclassified Properties

Density, g/cm3 8.8
8.2
Embodied Carbon, kg CO2/kg material 11
6.5
Embodied Energy, MJ/kg 180
89
Embodied Water, L/kg 940
220

Common Calculations

Stiffness to Weight: Axial, points 2.4
14
Stiffness to Weight: Bending, points 13
24
Strength to Weight: Axial, points 1.0
29
Strength to Weight: Bending, points 2.5
24
Thermal Diffusivity, mm2/s 33
3.1
Thermal Shock Resistance, points 2.4
18

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 to 0.030
Chromium (Cr), % 0
23 to 25
Copper (Cu), % 0 to 0.080
1.0 to 2.5
Gold (Au), % 0 to 0.050
0
Indium (In), % 0 to 0.1
0
Iron (Fe), % 0 to 0.020
34.1 to 46
Lead (Pb), % 35.5 to 37.3
0
Manganese (Mn), % 0
2.0 to 4.0
Molybdenum (Mo), % 0
5.2 to 6.2
Nickel (Ni), % 0 to 0.010
21 to 24
Nitrogen (N), % 0
0.35 to 0.6
Phosphorus (P), % 0
0 to 0.035
Silicon (Si), % 0
0 to 1.0
Silver (Ag), % 0 to 0.1
0
Sulfur (S), % 0
0 to 0.020
Tin (Sn), % 62.5 to 63.5
0
Tungsten (W), % 0
1.5 to 2.5
Zinc (Zn), % 0 to 0.0010
0