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EN 1.8151 Steel vs. EN AC-42000 Aluminum

EN 1.8151 steel belongs to the iron alloys classification, while EN AC-42000 aluminum belongs to the aluminum alloys. There are 25 material properties with values for both materials. Properties with values for just one material (5, 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 1.8151 steel and the bottom bar is EN AC-42000 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200 to 540
59 to 91
Elastic (Young's, Tensile) Modulus, GPa 190
70
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 72
26
Tensile Strength: Ultimate (UTS), MPa 670 to 1940
170 to 270

Thermal Properties

Latent Heat of Fusion, J/g 270
500
Maximum Temperature: Mechanical, °C 410
170
Melting Completion (Liquidus), °C 1440
610
Melting Onset (Solidus), °C 1400
600
Specific Heat Capacity, J/kg-K 480
900
Thermal Conductivity, W/m-K 50
160
Thermal Expansion, µm/m-K 13
22

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.4
38
Electrical Conductivity: Equal Weight (Specific), % IACS 8.6
130

Otherwise Unclassified Properties

Base Metal Price, % relative 2.2
9.5
Density, g/cm3 7.7
2.6
Embodied Carbon, kg CO2/kg material 1.8
8.0
Embodied Energy, MJ/kg 25
150
Embodied Water, L/kg 49
1110

Common Calculations

Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 25
53
Strength to Weight: Axial, points 24 to 70
18 to 28
Strength to Weight: Bending, points 22 to 45
26 to 35
Thermal Diffusivity, mm2/s 14
66
Thermal Shock Resistance, points 20 to 58
7.9 to 12

Alloy Composition


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Aluminum (Al), % 0
89.9 to 93.3
Carbon (C), % 0.4 to 0.5
0
Chromium (Cr), % 0.4 to 0.8
0
Copper (Cu), % 0
0 to 0.2
Iron (Fe), % 95.9 to 97.2
0 to 0.55
Lead (Pb), % 0
0 to 0.15
Magnesium (Mg), % 0
0.2 to 0.65
Manganese (Mn), % 0.6 to 0.9
0 to 0.35
Nickel (Ni), % 0
0 to 0.15
Phosphorus (P), % 0 to 0.025
0
Silicon (Si), % 1.3 to 1.7
6.5 to 7.5
Sulfur (S), % 0 to 0.025
0
Tin (Sn), % 0
0 to 0.050
Titanium (Ti), % 0
0 to 0.25
Vanadium (V), % 0.1 to 0.2
0
Zinc (Zn), % 0
0 to 0.15
Residuals, % 0
0 to 0.15