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6065 Aluminum vs. SAE-AISI 1008 Steel

6065 aluminum belongs to the aluminum alloys classification, while SAE-AISI 1008 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 6065 aluminum and the bottom bar is SAE-AISI 1008 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 68
190
Elongation at Break, % 4.5 to 11
22 to 33
Fatigue Strength, MPa 96 to 110
150 to 220
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 26
73
Shear Strength, MPa 190 to 230
220 to 230
Tensile Strength: Ultimate (UTS), MPa 310 to 400
330 to 370
Tensile Strength: Yield (Proof), MPa 270 to 380
190 to 310

Thermal Properties

Latent Heat of Fusion, J/g 400
250
Maximum Temperature: Mechanical, °C 180
400
Melting Completion (Liquidus), °C 640
1470
Melting Onset (Solidus), °C 590
1430
Specific Heat Capacity, J/kg-K 890
470
Thermal Conductivity, W/m-K 170
62
Thermal Expansion, µm/m-K 23
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 43
6.9
Electrical Conductivity: Equal Weight (Specific), % IACS 140
7.9

Otherwise Unclassified Properties

Base Metal Price, % relative 11
1.8
Density, g/cm3 2.8
7.9
Embodied Carbon, kg CO2/kg material 8.4
1.4
Embodied Energy, MJ/kg 150
18
Embodied Water, L/kg 1200
45

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 17 to 34
78 to 91
Resilience: Unit (Modulus of Resilience), kJ/m3 540 to 1040
92 to 260
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 49
24
Strength to Weight: Axial, points 31 to 40
12 to 13
Strength to Weight: Bending, points 36 to 43
13 to 15
Thermal Diffusivity, mm2/s 67
17
Thermal Shock Resistance, points 14 to 18
10 to 12

Alloy Composition

Aluminum (Al), % 94.4 to 98.2
0
Bismuth (Bi), % 0.5 to 1.5
0
Carbon (C), % 0
0 to 0.1
Chromium (Cr), % 0 to 0.15
0
Copper (Cu), % 0.15 to 0.4
0
Iron (Fe), % 0 to 0.7
99.31 to 99.7
Lead (Pb), % 0 to 0.050
0
Magnesium (Mg), % 0.8 to 1.2
0
Manganese (Mn), % 0 to 0.15
0.3 to 0.5
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0.4 to 0.8
0
Sulfur (S), % 0
0 to 0.050
Titanium (Ti), % 0 to 0.1
0
Zinc (Zn), % 0 to 0.25
0
Zirconium (Zr), % 0 to 0.15
0
Residuals, % 0 to 0.15
0