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7020 Aluminum vs. EN 1.7366 Steel

7020 aluminum belongs to the aluminum alloys classification, while EN 1.7366 steel belongs to the iron alloys. There are 31 material properties with values for both materials. Properties with values for just one material (2, 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 7020 aluminum and the bottom bar is EN 1.7366 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 45 to 100
140 to 210
Elastic (Young's, Tensile) Modulus, GPa 70
190
Elongation at Break, % 8.4 to 14
17 to 19
Fatigue Strength, MPa 110 to 130
160 to 320
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 26
74
Shear Strength, MPa 110 to 230
290 to 440
Tensile Strength: Ultimate (UTS), MPa 190 to 390
460 to 710
Tensile Strength: Yield (Proof), MPa 120 to 310
230 to 480

Thermal Properties

Latent Heat of Fusion, J/g 380
260
Maximum Temperature: Mechanical, °C 210
510
Melting Completion (Liquidus), °C 650
1460
Melting Onset (Solidus), °C 610
1420
Specific Heat Capacity, J/kg-K 880
470
Thermal Conductivity, W/m-K 150
40
Thermal Expansion, µm/m-K 23
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 39
8.1
Electrical Conductivity: Equal Weight (Specific), % IACS 120
9.3

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
4.3
Density, g/cm3 2.9
7.8
Embodied Carbon, kg CO2/kg material 8.3
1.7
Embodied Energy, MJ/kg 150
23
Embodied Water, L/kg 1150
69

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 23 to 46
74 to 110
Resilience: Unit (Modulus of Resilience), kJ/m3 110 to 690
140 to 600
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 47
25
Strength to Weight: Axial, points 18 to 37
16 to 25
Strength to Weight: Bending, points 25 to 41
17 to 23
Thermal Diffusivity, mm2/s 59
11
Thermal Shock Resistance, points 8.3 to 17
13 to 20

Alloy Composition

Aluminum (Al), % 91.2 to 94.8
0
Carbon (C), % 0
0 to 0.18
Chromium (Cr), % 0.1 to 0.35
4.0 to 6.0
Copper (Cu), % 0 to 0.2
0
Iron (Fe), % 0 to 0.4
91.9 to 95.3
Magnesium (Mg), % 1.0 to 1.4
0
Manganese (Mn), % 0.050 to 0.5
0.3 to 0.8
Molybdenum (Mo), % 0
0.45 to 0.65
Phosphorus (P), % 0
0 to 0.025
Silicon (Si), % 0 to 0.35
0 to 0.4
Sulfur (S), % 0
0 to 0.015
Titanium (Ti), % 0 to 0.25
0
Zinc (Zn), % 4.0 to 5.0
0
Zirconium (Zr), % 0.080 to 0.25
0
Residuals, % 0 to 0.15
0

Comparable Variants