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6065 Aluminum vs. EN 1.7709 Steel

6065 aluminum belongs to the aluminum alloys classification, while EN 1.7709 steel belongs to the iron alloys. There are 24 material properties with values for both materials. Properties with values for just one material (8, 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 6065 aluminum and the bottom bar is EN 1.7709 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 68
190
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 26
73
Tensile Strength: Ultimate (UTS), MPa 310 to 400
650 to 780

Thermal Properties

Latent Heat of Fusion, J/g 400
250
Maximum Temperature: Mechanical, °C 180
440
Melting Completion (Liquidus), °C 640
1470
Melting Onset (Solidus), °C 590
1420
Specific Heat Capacity, J/kg-K 890
470
Thermal Conductivity, W/m-K 170
33
Thermal Expansion, µm/m-K 23
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 43
7.5
Electrical Conductivity: Equal Weight (Specific), % IACS 140
8.6

Otherwise Unclassified Properties

Base Metal Price, % relative 11
3.4
Density, g/cm3 2.8
7.8
Embodied Carbon, kg CO2/kg material 8.4
2.3
Embodied Energy, MJ/kg 150
32
Embodied Water, L/kg 1200
56

Common Calculations

Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 49
24
Strength to Weight: Axial, points 31 to 40
23 to 27
Strength to Weight: Bending, points 36 to 43
21 to 24
Thermal Diffusivity, mm2/s 67
8.9
Thermal Shock Resistance, points 14 to 18
22 to 26

Alloy Composition

Aluminum (Al), % 94.4 to 98.2
0 to 0.030
Bismuth (Bi), % 0.5 to 1.5
0
Carbon (C), % 0
0.17 to 0.25
Chromium (Cr), % 0 to 0.15
1.2 to 1.5
Copper (Cu), % 0.15 to 0.4
0
Iron (Fe), % 0 to 0.7
95.2 to 97.5
Lead (Pb), % 0 to 0.050
0
Magnesium (Mg), % 0.8 to 1.2
0
Manganese (Mn), % 0 to 0.15
0.4 to 0.8
Molybdenum (Mo), % 0
0.55 to 0.8
Nickel (Ni), % 0
0 to 0.6
Phosphorus (P), % 0
0 to 0.025
Silicon (Si), % 0.4 to 0.8
0 to 0.4
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 0 to 0.1
0
Vanadium (V), % 0
0.2 to 0.35
Zinc (Zn), % 0 to 0.25
0
Zirconium (Zr), % 0 to 0.15
0
Residuals, % 0 to 0.15
0