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SAE-AISI A3 Steel vs. Solder Alloy 123

SAE-AISI A3 steel belongs to the iron alloys classification, while solder alloy 123 belongs to the otherwise unclassified metals. There are 23 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI A3 steel and the bottom bar is solder alloy 123.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
18
Poisson's Ratio 0.29
0.44
Shear Modulus, GPa 73
6.2
Tensile Strength: Ultimate (UTS), MPa 700 to 2150
28

Thermal Properties

Latent Heat of Fusion, J/g 260
26
Melting Completion (Liquidus), °C 1450
310
Melting Onset (Solidus), °C 1410
300
Specific Heat Capacity, J/kg-K 470
130
Thermal Conductivity, W/m-K 37
23
Thermal Expansion, µm/m-K 12
29

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 8.3
8.8
Electrical Conductivity: Equal Weight (Specific), % IACS 9.7
7.1

Otherwise Unclassified Properties

Base Metal Price, % relative 6.0
75
Density, g/cm3 7.8
11
Embodied Carbon, kg CO2/kg material 4.4
4.5
Embodied Energy, MJ/kg 67
74
Embodied Water, L/kg 78
500

Common Calculations

Stiffness to Weight: Axial, points 14
0.9
Stiffness to Weight: Bending, points 25
7.8
Strength to Weight: Axial, points 25 to 77
0.69
Strength to Weight: Bending, points 23 to 48
1.8
Thermal Diffusivity, mm2/s 10
16
Thermal Shock Resistance, points 23 to 70
3.8

Alloy Composition

Aluminum (Al), % 0
0 to 0.0010
Antimony (Sb), % 0
0 to 0.5
Arsenic (As), % 0
0 to 0.030
Bismuth (Bi), % 0
0 to 0.1
Cadmium (Cd), % 0
0 to 0.0050
Carbon (C), % 1.2 to 1.3
0
Chromium (Cr), % 4.8 to 5.5
0
Copper (Cu), % 0 to 0.25
0 to 0.080
Gold (Au), % 0
0 to 0.050
Indium (In), % 0
0 to 0.1
Iron (Fe), % 88.7 to 92
0 to 0.020
Lead (Pb), % 0
93.5 to 95.5
Manganese (Mn), % 0.4 to 0.6
0
Molybdenum (Mo), % 0.9 to 1.4
0
Nickel (Ni), % 0 to 0.3
0 to 0.010
Phosphorus (P), % 0 to 0.030
0
Silicon (Si), % 0 to 0.5
0
Silver (Ag), % 0
0 to 0.1
Sulfur (S), % 0 to 0.030
0
Tin (Sn), % 0
4.5 to 5.5
Vanadium (V), % 0.8 to 1.4
0
Zinc (Zn), % 0
0 to 0.0010