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EN 1.7323 Steel vs. 2018 Aluminum

EN 1.7323 steel belongs to the iron alloys classification, while 2018 aluminum belongs to the aluminum 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. Please note that the two materials have significantly dissimilar densities. This means that additional care is required when interpreting the data, because some material properties are based on units of mass, while others are based on units of area or volume.

For each property being compared, the top bar is EN 1.7323 steel and the bottom bar is 2018 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 150 to 180
120
Elastic (Young's, Tensile) Modulus, GPa 190
73
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 73
27
Tensile Strength: Ultimate (UTS), MPa 480 to 1460
420

Thermal Properties

Latent Heat of Fusion, J/g 250
390
Maximum Temperature: Mechanical, °C 410
220
Melting Completion (Liquidus), °C 1460
640
Melting Onset (Solidus), °C 1420
510
Specific Heat Capacity, J/kg-K 470
870
Thermal Conductivity, W/m-K 45
150
Thermal Expansion, µm/m-K 13
22

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.2
40
Electrical Conductivity: Equal Weight (Specific), % IACS 8.3
120

Otherwise Unclassified Properties

Base Metal Price, % relative 2.5
11
Density, g/cm3 7.9
3.1
Embodied Carbon, kg CO2/kg material 1.5
8.1
Embodied Energy, MJ/kg 20
150
Embodied Water, L/kg 50
1130

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
45
Strength to Weight: Axial, points 17 to 52
38
Strength to Weight: Bending, points 17 to 36
41
Thermal Diffusivity, mm2/s 12
57
Thermal Shock Resistance, points 14 to 43
19

Alloy Composition

Aluminum (Al), % 0
89.7 to 94.4
Carbon (C), % 0.17 to 0.23
0
Chromium (Cr), % 0.3 to 0.6
0 to 0.1
Copper (Cu), % 0 to 0.25
3.5 to 4.5
Iron (Fe), % 97.1 to 98.4
0 to 1.0
Magnesium (Mg), % 0
0.45 to 0.9
Manganese (Mn), % 0.7 to 1.0
0 to 0.2
Molybdenum (Mo), % 0.4 to 0.5
0
Nickel (Ni), % 0
1.7 to 2.3
Phosphorus (P), % 0 to 0.025
0
Silicon (Si), % 0 to 0.3
0 to 0.9
Sulfur (S), % 0.020 to 0.040
0
Zinc (Zn), % 0
0 to 0.25
Residuals, % 0
0 to 0.15