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SAE-AISI 1021 Steel vs. Solder Alloy 124

SAE-AISI 1021 steel belongs to the iron alloys classification, while solder alloy 124 belongs to the otherwise unclassified metals. There are 24 material properties with values for both materials. Properties with values for just one material (8, 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 124.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
17
Elongation at Break, % 17 to 27
46
Poisson's Ratio 0.29
0.44
Shear Modulus, GPa 73
5.8
Tensile Strength: Ultimate (UTS), MPa 480 to 530
27

Thermal Properties

Latent Heat of Fusion, J/g 250
24
Melting Completion (Liquidus), °C 1460
330
Melting Onset (Solidus), °C 1420
320
Specific Heat Capacity, J/kg-K 470
130
Thermal Conductivity, W/m-K 52
22
Thermal Expansion, µm/m-K 12
29

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.0
9.6
Electrical Conductivity: Equal Weight (Specific), % IACS 8.0
7.7

Otherwise Unclassified Properties

Base Metal Price, % relative 1.8
70
Density, g/cm3 7.9
11
Embodied Carbon, kg CO2/kg material 1.4
4.1
Embodied Energy, MJ/kg 18
68
Embodied Water, L/kg 46
470

Common Calculations

Stiffness to Weight: Axial, points 13
0.83
Stiffness to Weight: Bending, points 24
7.6
Strength to Weight: Axial, points 17 to 19
0.65
Strength to Weight: Bending, points 17 to 18
1.8
Thermal Diffusivity, mm2/s 14
15
Thermal Shock Resistance, points 15 to 17
3.9

Alloy Composition

Aluminum (Al), % 0
0 to 0.0010
Antimony (Sb), % 0
0 to 0.12
Arsenic (As), % 0
0 to 0.030
Bismuth (Bi), % 0
0 to 0.1
Cadmium (Cd), % 0
0 to 0.0020
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
97.2 to 98.2
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
1.8 to 2.2
Zinc (Zn), % 0
0 to 0.0010