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Solder Alloy 123 vs. S35315 Stainless Steel

Solder alloy 123 belongs to the otherwise unclassified metals classification, while S35315 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 S35315 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 8.0
190
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
78
Tensile Strength: Ultimate (UTS), MPa 28
740

Thermal Properties

Latent Heat of Fusion, J/g 26
330
Melting Completion (Liquidus), °C 310
1370
Melting Onset (Solidus), °C 300
1330
Specific Heat Capacity, J/kg-K 130
480
Thermal Conductivity, W/m-K 23
12
Thermal Expansion, µm/m-K 29
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 8.8
1.7
Electrical Conductivity: Equal Weight (Specific), % IACS 7.1
2.0

Otherwise Unclassified Properties

Base Metal Price, % relative 75
34
Density, g/cm3 11
7.9
Embodied Carbon, kg CO2/kg material 4.5
5.7
Embodied Energy, MJ/kg 74
81
Embodied Water, L/kg 500
220

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
26
Strength to Weight: Bending, points 1.8
23
Thermal Diffusivity, mm2/s 16
3.1
Thermal Shock Resistance, points 3.8
17

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
0.040 to 0.080
Cerium (Ce), % 0
0.030 to 0.1
Chromium (Cr), % 0
24 to 26
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
33.6 to 40.6
Lead (Pb), % 93.5 to 95.5
0
Manganese (Mn), % 0
0 to 2.0
Nickel (Ni), % 0 to 0.010
34 to 36
Nitrogen (N), % 0
0.12 to 0.18
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0
1.2 to 2.0
Silver (Ag), % 0 to 0.1
0
Sulfur (S), % 0
0 to 0.030
Tin (Sn), % 4.5 to 5.5
0
Zinc (Zn), % 0 to 0.0010
0