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5021 Aluminum vs. EN 1.6570 Steel

5021 aluminum belongs to the aluminum alloys classification, while EN 1.6570 steel belongs to the iron alloys. There are 29 material properties with values for both materials. Properties with values for just one material (4, 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 5021 aluminum and the bottom bar is EN 1.6570 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 68
190
Elongation at Break, % 1.1 to 3.4
11 to 17
Fatigue Strength, MPa 85 to 110
500 to 660
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 26
73
Tensile Strength: Ultimate (UTS), MPa 300 to 310
910 to 1130
Tensile Strength: Yield (Proof), MPa 240 to 270
760 to 1060

Thermal Properties

Latent Heat of Fusion, J/g 400
250
Maximum Temperature: Mechanical, °C 180
440
Melting Completion (Liquidus), °C 640
1460
Melting Onset (Solidus), °C 590
1420
Specific Heat Capacity, J/kg-K 900
470
Thermal Conductivity, W/m-K 140
40
Thermal Expansion, µm/m-K 23
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 35
7.7
Electrical Conductivity: Equal Weight (Specific), % IACS 120
8.8

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
3.9
Density, g/cm3 2.7
7.9
Embodied Carbon, kg CO2/kg material 8.6
1.7
Embodied Energy, MJ/kg 150
23
Embodied Water, L/kg 1180
56

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 3.1 to 10
120 to 140
Resilience: Unit (Modulus of Resilience), kJ/m3 440 to 550
1520 to 3010
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 50
24
Strength to Weight: Axial, points 30 to 32
32 to 40
Strength to Weight: Bending, points 37
27 to 31
Thermal Diffusivity, mm2/s 57
11
Thermal Shock Resistance, points 13 to 14
27 to 33

Alloy Composition

Aluminum (Al), % 95.2 to 97.7
0
Carbon (C), % 0
0.28 to 0.35
Chromium (Cr), % 0 to 0.15
1.0 to 1.4
Copper (Cu), % 0 to 0.15
0
Iron (Fe), % 0 to 0.5
94 to 96.2
Magnesium (Mg), % 2.2 to 2.8
0
Manganese (Mn), % 0.1 to 0.5
0.6 to 1.0
Molybdenum (Mo), % 0
0.3 to 0.5
Nickel (Ni), % 0
1.6 to 2.1
Phosphorus (P), % 0
0 to 0.020
Silicon (Si), % 0 to 0.4
0 to 0.6
Sulfur (S), % 0
0 to 0.015
Zinc (Zn), % 0 to 0.15
0
Residuals, % 0 to 0.15
0

Comparable Variants