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Solder Alloy 123 vs. S35115 Stainless Steel

Solder alloy 123 belongs to the otherwise unclassified metals classification, while S35115 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 123 and the bottom bar is S35115 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 8.0
210
Elastic (Young's, Tensile) Modulus, GPa 18
200
Elongation at Break, % 45
46
Poisson's Ratio 0.44
0.28
Shear Modulus, GPa 6.2
79
Tensile Strength: Ultimate (UTS), MPa 28
670

Thermal Properties

Latent Heat of Fusion, J/g 26
310
Melting Completion (Liquidus), °C 310
1420
Melting Onset (Solidus), °C 300
1370
Specific Heat Capacity, J/kg-K 130
480
Thermal Conductivity, W/m-K 23
15
Thermal Expansion, µm/m-K 29
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 8.8
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 7.1
2.3

Otherwise Unclassified Properties

Base Metal Price, % relative 75
26
Density, g/cm3 11
7.9
Embodied Carbon, kg CO2/kg material 4.5
4.8
Embodied Energy, MJ/kg 74
67
Embodied Water, L/kg 500
190

Common Calculations

Stiffness to Weight: Axial, points 0.9
14
Stiffness to Weight: Bending, points 7.8
25
Strength to Weight: Axial, points 0.69
24
Strength to Weight: Bending, points 1.8
22
Thermal Diffusivity, mm2/s 16
3.9
Thermal Shock Resistance, points 3.8
15

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 0.1
0
Cadmium (Cd), % 0 to 0.0050
0
Carbon (C), % 0
0 to 0.030
Chromium (Cr), % 0
23 to 25
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
47.6 to 55.8
Lead (Pb), % 93.5 to 95.5
0
Manganese (Mn), % 0
0 to 1.0
Molybdenum (Mo), % 0
1.5 to 2.5
Nickel (Ni), % 0 to 0.010
19 to 22
Nitrogen (N), % 0
0.2 to 0.3
Phosphorus (P), % 0
0 to 0.045
Silicon (Si), % 0
0.5 to 1.5
Silver (Ag), % 0 to 0.1
0
Sulfur (S), % 0
0 to 0.015
Tin (Sn), % 4.5 to 5.5
0
Zinc (Zn), % 0 to 0.0010
0