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Solder Alloy 124 vs. S31266 Stainless Steel

Solder alloy 124 belongs to the otherwise unclassified metals classification, while S31266 stainless steel belongs to the iron alloys. There are 24 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

For each property being compared, the top bar is solder alloy 124 and the bottom bar is S31266 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 17
210
Elongation at Break, % 46
40
Poisson's Ratio 0.44
0.28
Shear Modulus, GPa 5.8
81
Tensile Strength: Ultimate (UTS), MPa 27
860

Thermal Properties

Latent Heat of Fusion, J/g 24
310
Melting Completion (Liquidus), °C 330
1470
Melting Onset (Solidus), °C 320
1420
Specific Heat Capacity, J/kg-K 130
460
Thermal Conductivity, W/m-K 22
12
Thermal Expansion, µm/m-K 29
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 9.6
1.8
Electrical Conductivity: Equal Weight (Specific), % IACS 7.7
2.0

Otherwise Unclassified Properties

Base Metal Price, % relative 70
37
Density, g/cm3 11
8.2
Embodied Carbon, kg CO2/kg material 4.1
6.5
Embodied Energy, MJ/kg 68
89
Embodied Water, L/kg 470
220

Common Calculations

Stiffness to Weight: Axial, points 0.83
14
Stiffness to Weight: Bending, points 7.6
24
Strength to Weight: Axial, points 0.65
29
Strength to Weight: Bending, points 1.8
24
Thermal Diffusivity, mm2/s 15
3.1
Thermal Shock Resistance, points 3.9
18

Alloy Composition

Aluminum (Al), % 0 to 0.0010
0
Antimony (Sb), % 0 to 0.12
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), % 97.2 to 98.2
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), % 1.8 to 2.2
0
Tungsten (W), % 0
1.5 to 2.5
Zinc (Zn), % 0 to 0.0010
0