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EN 1.3553 Steel vs. 8021 Aluminum

EN 1.3553 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 1.3553 steel and the bottom bar is 8021 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
70
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 77
26
Tensile Strength: Ultimate (UTS), MPa 720
160

Thermal Properties

Latent Heat of Fusion, J/g 260
400
Maximum Temperature: Mechanical, °C 540
170
Melting Completion (Liquidus), °C 1620
650
Melting Onset (Solidus), °C 1570
640
Specific Heat Capacity, J/kg-K 440
900
Thermal Conductivity, W/m-K 24
220
Thermal Expansion, µm/m-K 12
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 10
56
Electrical Conductivity: Equal Weight (Specific), % IACS 11
180

Otherwise Unclassified Properties

Base Metal Price, % relative 24
9.0
Density, g/cm3 8.4
2.8
Embodied Carbon, kg CO2/kg material 8.5
8.1
Embodied Energy, MJ/kg 130
150
Embodied Water, L/kg 96
1180

Common Calculations

Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 23
49
Strength to Weight: Axial, points 24
16
Strength to Weight: Bending, points 21
23
Thermal Diffusivity, mm2/s 6.4
88
Thermal Shock Resistance, points 21
7.0

Alloy Composition

Aluminum (Al), % 0
98 to 98.8
Carbon (C), % 0.78 to 0.86
0
Chromium (Cr), % 3.9 to 4.3
0
Copper (Cu), % 0 to 0.3
0 to 0.050
Iron (Fe), % 80.7 to 83.7
1.2 to 1.7
Manganese (Mn), % 0 to 0.4
0
Molybdenum (Mo), % 4.7 to 5.2
0
Phosphorus (P), % 0 to 0.025
0
Silicon (Si), % 0 to 0.4
0 to 0.15
Sulfur (S), % 0 to 0.015
0
Tungsten (W), % 6.0 to 6.7
0
Vanadium (V), % 1.7 to 2.0
0
Residuals, % 0
0 to 0.15