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6008 Aluminum vs. SAE-AISI 1141 Steel

6008 aluminum belongs to the aluminum alloys classification, while SAE-AISI 1141 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 6008 aluminum and the bottom bar is SAE-AISI 1141 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
190
Elongation at Break, % 9.1 to 17
11 to 17
Fatigue Strength, MPa 55 to 88
270 to 430
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 26
72
Shear Strength, MPa 120 to 170
460 to 480
Tensile Strength: Ultimate (UTS), MPa 200 to 290
740 to 810
Tensile Strength: Yield (Proof), MPa 100 to 220
400 to 700

Thermal Properties

Latent Heat of Fusion, J/g 410
250
Maximum Temperature: Mechanical, °C 180
400
Melting Completion (Liquidus), °C 640
1460
Melting Onset (Solidus), °C 620
1420
Specific Heat Capacity, J/kg-K 900
470
Thermal Conductivity, W/m-K 190
51
Thermal Expansion, µm/m-K 23
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 49
10
Electrical Conductivity: Equal Weight (Specific), % IACS 160
12

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
1.9
Density, g/cm3 2.7
7.8
Embodied Carbon, kg CO2/kg material 8.5
1.4
Embodied Energy, MJ/kg 160
19
Embodied Water, L/kg 1180
47

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 24 to 28
86 to 110
Resilience: Unit (Modulus of Resilience), kJ/m3 76 to 360
430 to 1290
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 50
24
Strength to Weight: Axial, points 21 to 29
26 to 29
Strength to Weight: Bending, points 28 to 35
23 to 25
Thermal Diffusivity, mm2/s 77
14
Thermal Shock Resistance, points 9.0 to 13
24 to 26

Alloy Composition

Aluminum (Al), % 96.5 to 99.1
0
Carbon (C), % 0
0.37 to 0.45
Chromium (Cr), % 0 to 0.3
0
Copper (Cu), % 0 to 0.3
0
Iron (Fe), % 0 to 0.35
97.7 to 98.2
Magnesium (Mg), % 0.4 to 0.7
0
Manganese (Mn), % 0 to 0.3
1.4 to 1.7
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0.5 to 0.9
0
Sulfur (S), % 0
0.080 to 0.13
Titanium (Ti), % 0 to 0.1
0
Vanadium (V), % 0.050 to 0.2
0
Zinc (Zn), % 0 to 0.2
0
Residuals, % 0 to 0.15
0