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Solder Alloy 123 vs. SAE-AISI 8625 Steel

Solder alloy 123 belongs to the otherwise unclassified metals classification, while SAE-AISI 8625 steel belongs to the iron alloys. There are 25 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is solder alloy 123 and the bottom bar is SAE-AISI 8625 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 8.0
150
Elastic (Young's, Tensile) Modulus, GPa 18
190
Elongation at Break, % 45
25
Poisson's Ratio 0.44
0.29
Shear Modulus, GPa 6.2
73
Tensile Strength: Ultimate (UTS), MPa 28
510

Thermal Properties

Latent Heat of Fusion, J/g 26
250
Melting Completion (Liquidus), °C 310
1460
Melting Onset (Solidus), °C 300
1420
Specific Heat Capacity, J/kg-K 130
470
Thermal Conductivity, W/m-K 23
39
Thermal Expansion, µm/m-K 29
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 8.8
7.3
Electrical Conductivity: Equal Weight (Specific), % IACS 7.1
8.3

Otherwise Unclassified Properties

Base Metal Price, % relative 75
2.6
Density, g/cm3 11
7.8
Embodied Carbon, kg CO2/kg material 4.5
1.5
Embodied Energy, MJ/kg 74
20
Embodied Water, L/kg 500
50

Common Calculations

Stiffness to Weight: Axial, points 0.9
13
Stiffness to Weight: Bending, points 7.8
24
Strength to Weight: Axial, points 0.69
18
Strength to Weight: Bending, points 1.8
18
Thermal Diffusivity, mm2/s 16
10
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
0.23 to 0.28
Chromium (Cr), % 0
0.4 to 0.6
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
96.8 to 98
Lead (Pb), % 93.5 to 95.5
0
Manganese (Mn), % 0
0.7 to 0.9
Molybdenum (Mo), % 0
0.15 to 0.25
Nickel (Ni), % 0 to 0.010
0.4 to 0.7
Phosphorus (P), % 0
0 to 0.035
Silicon (Si), % 0
0.15 to 0.35
Silver (Ag), % 0 to 0.1
0
Sulfur (S), % 0
0 to 0.040
Tin (Sn), % 4.5 to 5.5
0
Zinc (Zn), % 0 to 0.0010
0