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SAE-AISI 1021 Steel vs. Solder Alloy 123

SAE-AISI 1021 steel belongs to the iron alloys classification, while solder alloy 123 belongs to the otherwise unclassified metals. 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 SAE-AISI 1021 steel and the bottom bar is solder alloy 123.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 130 to 150
8.0
Elastic (Young's, Tensile) Modulus, GPa 190
18
Elongation at Break, % 17 to 27
45
Poisson's Ratio 0.29
0.44
Shear Modulus, GPa 73
6.2
Tensile Strength: Ultimate (UTS), MPa 480 to 530
28

Thermal Properties

Latent Heat of Fusion, J/g 250
26
Melting Completion (Liquidus), °C 1460
310
Melting Onset (Solidus), °C 1420
300
Specific Heat Capacity, J/kg-K 470
130
Thermal Conductivity, W/m-K 52
23
Thermal Expansion, µm/m-K 12
29

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.0
8.8
Electrical Conductivity: Equal Weight (Specific), % IACS 8.0
7.1

Otherwise Unclassified Properties

Base Metal Price, % relative 1.8
75
Density, g/cm3 7.9
11
Embodied Carbon, kg CO2/kg material 1.4
4.5
Embodied Energy, MJ/kg 18
74
Embodied Water, L/kg 46
500

Common Calculations

Stiffness to Weight: Axial, points 13
0.9
Stiffness to Weight: Bending, points 24
7.8
Strength to Weight: Axial, points 17 to 19
0.69
Strength to Weight: Bending, points 17 to 18
1.8
Thermal Diffusivity, mm2/s 14
16
Thermal Shock Resistance, points 15 to 17
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), % 0.18 to 0.23
0
Copper (Cu), % 0
0 to 0.080
Gold (Au), % 0
0 to 0.050
Indium (In), % 0
0 to 0.1
Iron (Fe), % 98.8 to 99.22
0 to 0.020
Lead (Pb), % 0
93.5 to 95.5
Manganese (Mn), % 0.6 to 0.9
0
Nickel (Ni), % 0
0 to 0.010
Phosphorus (P), % 0 to 0.040
0
Silver (Ag), % 0
0 to 0.1
Sulfur (S), % 0 to 0.050
0
Tin (Sn), % 0
4.5 to 5.5
Zinc (Zn), % 0
0 to 0.0010