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6066 Aluminum vs. EN 1.7711 Steel

6066 aluminum belongs to the aluminum alloys classification, while EN 1.7711 steel belongs to the iron alloys. There are 30 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 6066 aluminum and the bottom bar is EN 1.7711 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
190
Elongation at Break, % 7.8 to 17
16 to 22
Fatigue Strength, MPa 94 to 130
290 to 520
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 26
73
Shear Strength, MPa 95 to 240
440 to 570
Tensile Strength: Ultimate (UTS), MPa 160 to 400
690 to 930
Tensile Strength: Yield (Proof), MPa 93 to 360
400 to 800

Thermal Properties

Latent Heat of Fusion, J/g 410
250
Maximum Temperature: Mechanical, °C 170
430
Melting Completion (Liquidus), °C 650
1460
Melting Onset (Solidus), °C 560
1420
Specific Heat Capacity, J/kg-K 890
470
Thermal Conductivity, W/m-K 150
33
Thermal Expansion, µm/m-K 23
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 40
7.4
Electrical Conductivity: Equal Weight (Specific), % IACS 130
8.5

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
3.0
Density, g/cm3 2.8
7.8
Embodied Carbon, kg CO2/kg material 8.3
2.3
Embodied Energy, MJ/kg 150
32
Embodied Water, L/kg 1160
54

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 23 to 52
130 to 140
Resilience: Unit (Modulus of Resilience), kJ/m3 61 to 920
430 to 1690
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 49
24
Strength to Weight: Axial, points 16 to 39
24 to 33
Strength to Weight: Bending, points 23 to 43
22 to 27
Thermal Diffusivity, mm2/s 61
8.9
Thermal Shock Resistance, points 6.9 to 17
24 to 32

Alloy Composition

Aluminum (Al), % 93 to 97
0 to 0.015
Carbon (C), % 0
0.36 to 0.44
Chromium (Cr), % 0 to 0.4
0.9 to 1.2
Copper (Cu), % 0.7 to 1.2
0
Iron (Fe), % 0 to 0.5
96 to 97.5
Magnesium (Mg), % 0.8 to 1.4
0
Manganese (Mn), % 0.6 to 1.1
0.45 to 0.85
Molybdenum (Mo), % 0
0.5 to 0.65
Phosphorus (P), % 0
0 to 0.025
Silicon (Si), % 0.9 to 1.8
0 to 0.4
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 0 to 0.2
0
Vanadium (V), % 0
0.25 to 0.35
Zinc (Zn), % 0 to 0.25
0
Residuals, % 0 to 0.15
0

Comparable Variants