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6081 Aluminum vs. EN 1.5662 Steel

6081 aluminum belongs to the aluminum alloys classification, while EN 1.5662 steel belongs to the iron alloys. There are 28 material properties with values for both materials. Properties with values for just one material (5, 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 6081 aluminum and the bottom bar is EN 1.5662 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
190
Elongation at Break, % 9.0
20
Fatigue Strength, MPa 110
380 to 450
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 26
73
Shear Strength, MPa 180
460 to 470
Tensile Strength: Ultimate (UTS), MPa 310
740 to 750
Tensile Strength: Yield (Proof), MPa 270
550 to 660

Thermal Properties

Latent Heat of Fusion, J/g 410
250
Maximum Temperature: Mechanical, °C 160
430
Melting Completion (Liquidus), °C 640
1460
Melting Onset (Solidus), °C 610
1410
Specific Heat Capacity, J/kg-K 900
470
Thermal Expansion, µm/m-K 23
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 47
8.7
Electrical Conductivity: Equal Weight (Specific), % IACS 160
9.8

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
7.5
Density, g/cm3 2.7
8.0
Embodied Carbon, kg CO2/kg material 8.3
2.3
Embodied Energy, MJ/kg 150
31
Embodied Water, L/kg 1180
63

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 27
140 to 150
Resilience: Unit (Modulus of Resilience), kJ/m3 540
810 to 1150
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 50
24
Strength to Weight: Axial, points 32
26
Strength to Weight: Bending, points 37
23
Thermal Shock Resistance, points 14
22

Alloy Composition

Aluminum (Al), % 96.3 to 98.6
0
Carbon (C), % 0
0 to 0.1
Chromium (Cr), % 0 to 0.1
0
Copper (Cu), % 0 to 0.1
0
Iron (Fe), % 0 to 0.5
88.6 to 91.2
Magnesium (Mg), % 0.6 to 1.0
0
Manganese (Mn), % 0.1 to 0.45
0.3 to 0.8
Molybdenum (Mo), % 0
0 to 0.1
Nickel (Ni), % 0
8.5 to 10
Phosphorus (P), % 0
0 to 0.020
Silicon (Si), % 0.7 to 1.1
0 to 0.35
Sulfur (S), % 0
0 to 0.0050
Titanium (Ti), % 0 to 0.15
0
Vanadium (V), % 0
0 to 0.050
Zinc (Zn), % 0 to 0.2
0
Residuals, % 0 to 0.15
0