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8079 Aluminum vs. ACI-ASTM CB6 Steel

8079 aluminum belongs to the aluminum alloys classification, while ACI-ASTM CB6 steel belongs to the iron alloys. There are 29 material properties with values for both materials. Properties with values for just one material (3, 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 8079 aluminum and the bottom bar is ACI-ASTM CB6 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
200
Elongation at Break, % 2.2
18
Fatigue Strength, MPa 56
410
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 26
77
Tensile Strength: Ultimate (UTS), MPa 150
880
Tensile Strength: Yield (Proof), MPa 120
660

Thermal Properties

Latent Heat of Fusion, J/g 400
280
Maximum Temperature: Mechanical, °C 170
870
Melting Completion (Liquidus), °C 650
1440
Melting Onset (Solidus), °C 640
1390
Specific Heat Capacity, J/kg-K 900
480
Thermal Conductivity, W/m-K 230
17
Thermal Expansion, µm/m-K 23
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 58
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 190
2.6

Otherwise Unclassified Properties

Base Metal Price, % relative 9.0
12
Density, g/cm3 2.8
7.8
Embodied Carbon, kg CO2/kg material 8.2
2.5
Embodied Energy, MJ/kg 150
36
Embodied Water, L/kg 1180
130

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 3.1
150
Resilience: Unit (Modulus of Resilience), kJ/m3 110
1110
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 50
25
Strength to Weight: Axial, points 15
32
Strength to Weight: Bending, points 22
26
Thermal Diffusivity, mm2/s 92
4.6
Thermal Shock Resistance, points 6.4
31

Alloy Composition

Aluminum (Al), % 98.1 to 99.3
0
Carbon (C), % 0
0 to 0.060
Chromium (Cr), % 0
15.5 to 17.5
Copper (Cu), % 0 to 0.050
0
Iron (Fe), % 0.7 to 1.3
74.4 to 81
Manganese (Mn), % 0
0 to 1.0
Molybdenum (Mo), % 0
0 to 0.5
Nickel (Ni), % 0
3.5 to 5.5
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0.050 to 0.3
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Zinc (Zn), % 0 to 0.1
0
Residuals, % 0 to 0.15
0