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Solder Alloy 123 vs. SAE-AISI 1042 Steel

Solder alloy 123 belongs to the otherwise unclassified metals classification, while SAE-AISI 1042 steel belongs to the iron alloys. There are 25 material properties with values for both materials. Properties with values for just one material (7, 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 1042 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 8.0
180 to 200
Elastic (Young's, Tensile) Modulus, GPa 18
190
Elongation at Break, % 45
14 to 18
Poisson's Ratio 0.44
0.29
Shear Modulus, GPa 6.2
73
Tensile Strength: Ultimate (UTS), MPa 28
620 to 700

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
52
Thermal Expansion, µm/m-K 29
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 8.8
7.0
Electrical Conductivity: Equal Weight (Specific), % IACS 7.1
8.1

Otherwise Unclassified Properties

Base Metal Price, % relative 75
1.8
Density, g/cm3 11
7.8
Embodied Carbon, kg CO2/kg material 4.5
1.4
Embodied Energy, MJ/kg 74
18
Embodied Water, L/kg 500
46

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
22 to 25
Strength to Weight: Bending, points 1.8
21 to 22
Thermal Diffusivity, mm2/s 16
14
Thermal Shock Resistance, points 3.8
20 to 22

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
0.4 to 0.47
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
98.5 to 99
Lead (Pb), % 93.5 to 95.5
0
Manganese (Mn), % 0
0.6 to 0.9
Nickel (Ni), % 0 to 0.010
0
Phosphorus (P), % 0
0 to 0.040
Silver (Ag), % 0 to 0.1
0
Sulfur (S), % 0
0 to 0.050
Tin (Sn), % 4.5 to 5.5
0
Zinc (Zn), % 0 to 0.0010
0