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EN 1.5514 Steel vs. 8021 Aluminum

EN 1.5514 steel belongs to the iron alloys classification, while 8021 aluminum belongs to the aluminum alloys. There are 24 material properties with values for both materials. Properties with values for just one material (7, 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 1.5514 steel and the bottom bar is 8021 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
70
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 73
26
Tensile Strength: Ultimate (UTS), MPa 470 to 1680
160

Thermal Properties

Latent Heat of Fusion, J/g 250
400
Maximum Temperature: Mechanical, °C 400
170
Melting Completion (Liquidus), °C 1460
650
Melting Onset (Solidus), °C 1420
640
Specific Heat Capacity, J/kg-K 470
900
Thermal Conductivity, W/m-K 49
220
Thermal Expansion, µm/m-K 13
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.1
56
Electrical Conductivity: Equal Weight (Specific), % IACS 8.2
180

Otherwise Unclassified Properties

Base Metal Price, % relative 1.9
9.0
Density, g/cm3 7.8
2.8
Embodied Carbon, kg CO2/kg material 1.4
8.1
Embodied Energy, MJ/kg 19
150
Embodied Water, L/kg 47
1180

Common Calculations

Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
49
Strength to Weight: Axial, points 17 to 60
16
Strength to Weight: Bending, points 17 to 40
23
Thermal Diffusivity, mm2/s 13
88
Thermal Shock Resistance, points 14 to 50
7.0

Alloy Composition

Aluminum (Al), % 0
98 to 98.8
Boron (B), % 0.00080 to 0.0050
0
Carbon (C), % 0.3 to 0.35
0
Chromium (Cr), % 0 to 0.3
0
Copper (Cu), % 0 to 0.25
0 to 0.050
Iron (Fe), % 97.8 to 99.099
1.2 to 1.7
Manganese (Mn), % 0.6 to 0.9
0
Phosphorus (P), % 0 to 0.025
0
Silicon (Si), % 0 to 0.3
0 to 0.15
Sulfur (S), % 0 to 0.025
0
Residuals, % 0
0 to 0.15