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Solder Alloy 122 vs. S44800 Stainless Steel

Solder alloy 122 belongs to the otherwise unclassified metals classification, while S44800 stainless steel belongs to the iron alloys. There are 25 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 122 and the bottom bar is S44800 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 10
190
Elastic (Young's, Tensile) Modulus, GPa 20
210
Elongation at Break, % 30
23
Poisson's Ratio 0.43
0.27
Shear Modulus, GPa 6.9
82
Tensile Strength: Ultimate (UTS), MPa 30
590

Thermal Properties

Latent Heat of Fusion, J/g 27
300
Melting Completion (Liquidus), °C 300
1460
Melting Onset (Solidus), °C 270
1410
Specific Heat Capacity, J/kg-K 140
480
Thermal Conductivity, W/m-K 25
17
Thermal Expansion, µm/m-K 28
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 8.9
2.6
Electrical Conductivity: Equal Weight (Specific), % IACS 7.3
3.0

Otherwise Unclassified Properties

Base Metal Price, % relative 75
19
Density, g/cm3 11
7.8
Embodied Carbon, kg CO2/kg material 5.0
3.8
Embodied Energy, MJ/kg 84
52
Embodied Water, L/kg 540
190

Common Calculations

Stiffness to Weight: Axial, points 1.0
15
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
4.6
Thermal Shock Resistance, points 3.9
19

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 0.010
Chromium (Cr), % 0
28 to 30
Copper (Cu), % 0 to 0.080
0 to 0.15
Gold (Au), % 0 to 0.050
0
Indium (In), % 0 to 0.1
0
Iron (Fe), % 0 to 0.020
62.6 to 66.5
Lead (Pb), % 88.4 to 90.5
0
Manganese (Mn), % 0
0 to 0.3
Molybdenum (Mo), % 0
3.5 to 4.2
Nickel (Ni), % 0 to 0.010
2.0 to 2.5
Nitrogen (N), % 0
0 to 0.020
Phosphorus (P), % 0
0 to 0.025
Silicon (Si), % 0
0 to 0.2
Silver (Ag), % 0 to 0.1
0
Sulfur (S), % 0
0 to 0.020
Tin (Sn), % 9.5 to 10.5
0
Zinc (Zn), % 0 to 0.0010
0