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Solder Alloy 122 vs. SAE-AISI 4028 Steel

Solder alloy 122 belongs to the otherwise unclassified metals classification, while SAE-AISI 4028 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 122 and the bottom bar is SAE-AISI 4028 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 10
150 to 190
Elastic (Young's, Tensile) Modulus, GPa 20
190
Elongation at Break, % 30
14 to 23
Poisson's Ratio 0.43
0.29
Shear Modulus, GPa 6.9
73
Tensile Strength: Ultimate (UTS), MPa 30
490 to 630

Thermal Properties

Latent Heat of Fusion, J/g 27
250
Melting Completion (Liquidus), °C 300
1460
Melting Onset (Solidus), °C 270
1420
Specific Heat Capacity, J/kg-K 140
470
Thermal Conductivity, W/m-K 25
49
Thermal Expansion, µm/m-K 28
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 8.9
7.1
Electrical Conductivity: Equal Weight (Specific), % IACS 7.3
8.1

Otherwise Unclassified Properties

Base Metal Price, % relative 75
2.1
Density, g/cm3 11
7.8
Embodied Carbon, kg CO2/kg material 5.0
1.5
Embodied Energy, MJ/kg 84
19
Embodied Water, L/kg 540
47

Common Calculations

Stiffness to Weight: Axial, points 1.0
13
Stiffness to Weight: Bending, points 8.2
24
Strength to Weight: Axial, points 0.77
17 to 22
Strength to Weight: Bending, points 2.0
18 to 21
Thermal Diffusivity, mm2/s 17
13
Thermal Shock Resistance, points 3.9
16 to 20

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
0.25 to 0.3
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
98.1 to 98.7
Lead (Pb), % 88.4 to 90.5
0
Manganese (Mn), % 0
0.7 to 0.9
Molybdenum (Mo), % 0
0.2 to 0.3
Nickel (Ni), % 0 to 0.010
0
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
0.035 to 0.050
Tin (Sn), % 9.5 to 10.5
0
Zinc (Zn), % 0 to 0.0010
0