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6008 Aluminum vs. SAE-AISI H12 Steel

6008 aluminum belongs to the aluminum alloys classification, while SAE-AISI H12 steel belongs to the iron alloys. There are 23 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 6008 aluminum and the bottom bar is SAE-AISI H12 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
190
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 26
75
Tensile Strength: Ultimate (UTS), MPa 200 to 290
690 to 1850

Thermal Properties

Latent Heat of Fusion, J/g 410
270
Melting Completion (Liquidus), °C 640
1480
Melting Onset (Solidus), °C 620
1440
Specific Heat Capacity, J/kg-K 900
470
Thermal Conductivity, W/m-K 190
36
Thermal Expansion, µm/m-K 23
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 49
8.3
Electrical Conductivity: Equal Weight (Specific), % IACS 160
9.5

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
9.0
Density, g/cm3 2.7
7.9
Embodied Carbon, kg CO2/kg material 8.5
2.9
Embodied Energy, MJ/kg 160
41
Embodied Water, L/kg 1180
76

Common Calculations

Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 50
24
Strength to Weight: Axial, points 21 to 29
24 to 65
Strength to Weight: Bending, points 28 to 35
22 to 42
Thermal Diffusivity, mm2/s 77
9.8
Thermal Shock Resistance, points 9.0 to 13
22 to 60

Alloy Composition

Aluminum (Al), % 96.5 to 99.1
0
Carbon (C), % 0
0.3 to 0.4
Chromium (Cr), % 0 to 0.3
4.8 to 5.5
Copper (Cu), % 0 to 0.3
0 to 0.25
Iron (Fe), % 0 to 0.35
87.8 to 91.7
Magnesium (Mg), % 0.4 to 0.7
0
Manganese (Mn), % 0 to 0.3
0.2 to 0.5
Molybdenum (Mo), % 0
1.3 to 1.8
Nickel (Ni), % 0
0 to 0.3
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0.5 to 0.9
0.8 to 1.2
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 0 to 0.1
0
Tungsten (W), % 0
1.0 to 1.7
Vanadium (V), % 0.050 to 0.2
0 to 0.5
Zinc (Zn), % 0 to 0.2
0
Residuals, % 0 to 0.15
0