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Solder Alloy 122 vs. S38100 Stainless Steel

Solder alloy 122 belongs to the otherwise unclassified metals classification, while S38100 stainless steel belongs to the iron alloys. There are 25 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 122 and the bottom bar is S38100 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 10
190
Elastic (Young's, Tensile) Modulus, GPa 20
200
Elongation at Break, % 30
45
Poisson's Ratio 0.43
0.28
Shear Modulus, GPa 6.9
76
Tensile Strength: Ultimate (UTS), MPa 30
580

Thermal Properties

Latent Heat of Fusion, J/g 27
320
Melting Completion (Liquidus), °C 300
1400
Melting Onset (Solidus), °C 270
1350
Specific Heat Capacity, J/kg-K 140
480
Thermal Conductivity, W/m-K 25
15
Thermal Expansion, µm/m-K 28
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 8.9
2.3
Electrical Conductivity: Equal Weight (Specific), % IACS 7.3
2.6

Otherwise Unclassified Properties

Base Metal Price, % relative 75
20
Density, g/cm3 11
7.8
Embodied Carbon, kg CO2/kg material 5.0
3.8
Embodied Energy, MJ/kg 84
54
Embodied Water, L/kg 540
160

Common Calculations

Stiffness to Weight: Axial, points 1.0
14
Stiffness to Weight: Bending, points 8.2
25
Strength to Weight: Axial, points 0.77
21
Strength to Weight: Bending, points 2.0
20
Thermal Diffusivity, mm2/s 17
4.0
Thermal Shock Resistance, points 3.9
13

Alloy Composition

Aluminum (Al), % 0 to 0.0010
0
Antimony (Sb), % 0 to 0.5
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 0.080
Chromium (Cr), % 0
17 to 19
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
57.9 to 64
Lead (Pb), % 88.4 to 90.5
0
Manganese (Mn), % 0
0 to 2.0
Nickel (Ni), % 0 to 0.010
17.5 to 18.5
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0
1.5 to 2.5
Silver (Ag), % 0 to 0.1
0
Sulfur (S), % 0
0 to 0.030
Tin (Sn), % 9.5 to 10.5
0
Zinc (Zn), % 0 to 0.0010
0