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EN 1.1233 Steel vs. 2218 Aluminum

EN 1.1233 steel belongs to the iron alloys classification, while 2218 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 1.1233 steel and the bottom bar is 2218 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200 to 220
95 to 110
Elastic (Young's, Tensile) Modulus, GPa 190
73
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 72
27
Tensile Strength: Ultimate (UTS), MPa 680 to 760
330 to 430

Thermal Properties

Latent Heat of Fusion, J/g 250
390
Maximum Temperature: Mechanical, °C 400
220
Melting Completion (Liquidus), °C 1450
640
Melting Onset (Solidus), °C 1410
510
Specific Heat Capacity, J/kg-K 470
870
Thermal Conductivity, W/m-K 51
140
Thermal Expansion, µm/m-K 12
22

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.1
37
Electrical Conductivity: Equal Weight (Specific), % IACS 8.2
110

Otherwise Unclassified Properties

Base Metal Price, % relative 1.9
11
Density, g/cm3 7.8
3.1
Embodied Carbon, kg CO2/kg material 1.4
8.2
Embodied Energy, MJ/kg 19
150
Embodied Water, L/kg 47
1130

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
45
Strength to Weight: Axial, points 24 to 27
30 to 39
Strength to Weight: Bending, points 22 to 24
34 to 41
Thermal Diffusivity, mm2/s 14
52
Thermal Shock Resistance, points 22 to 24
15 to 19

Alloy Composition

Aluminum (Al), % 0 to 0.050
88.8 to 93.6
Carbon (C), % 0.52 to 0.6
0
Chromium (Cr), % 0
0 to 0.1
Copper (Cu), % 0 to 0.3
3.5 to 4.5
Iron (Fe), % 98 to 99.1
0 to 1.0
Magnesium (Mg), % 0
1.2 to 1.8
Manganese (Mn), % 0.9 to 1.2
0 to 0.2
Nickel (Ni), % 0
1.7 to 2.3
Oxygen (O), % 0 to 0.0020
0
Phosphorus (P), % 0 to 0.025
0
Silicon (Si), % 0 to 0.4
0 to 0.9
Sulfur (S), % 0 to 0.030
0
Zinc (Zn), % 0
0 to 0.25
Residuals, % 0
0 to 0.15