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6023 Aluminum vs. ACI-ASTM CF8M Steel

6023 aluminum belongs to the aluminum alloys classification, while ACI-ASTM CF8M steel belongs to the iron alloys. There are 29 material properties with values for both materials. Properties with values for just one material (4, 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 6023 aluminum and the bottom bar is ACI-ASTM CF8M steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
200
Elongation at Break, % 11
50
Fatigue Strength, MPa 120 to 130
280
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 26
78
Tensile Strength: Ultimate (UTS), MPa 360
540
Tensile Strength: Yield (Proof), MPa 300 to 310
290

Thermal Properties

Latent Heat of Fusion, J/g 400
300
Maximum Temperature: Mechanical, °C 160
1000
Melting Completion (Liquidus), °C 640
1440
Melting Onset (Solidus), °C 580
1400
Specific Heat Capacity, J/kg-K 890
480
Thermal Conductivity, W/m-K 170
16
Thermal Expansion, µm/m-K 23
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 45
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 140
2.3

Otherwise Unclassified Properties

Base Metal Price, % relative 11
19
Density, g/cm3 2.8
7.8
Embodied Carbon, kg CO2/kg material 8.3
3.8
Embodied Energy, MJ/kg 150
53
Embodied Water, L/kg 1180
160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 38 to 39
230
Resilience: Unit (Modulus of Resilience), kJ/m3 670 to 690
210
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 49
25
Strength to Weight: Axial, points 35 to 36
19
Strength to Weight: Bending, points 40
19
Thermal Diffusivity, mm2/s 67
4.3
Thermal Shock Resistance, points 16
12

Alloy Composition

Aluminum (Al), % 94 to 97.7
0
Bismuth (Bi), % 0.3 to 0.8
0
Carbon (C), % 0
0 to 0.080
Chromium (Cr), % 0
18 to 21
Copper (Cu), % 0.2 to 0.5
0
Iron (Fe), % 0 to 0.5
60.3 to 71
Magnesium (Mg), % 0.4 to 0.9
0
Manganese (Mn), % 0.2 to 0.6
0 to 1.5
Molybdenum (Mo), % 0
2.0 to 3.0
Nickel (Ni), % 0
9.0 to 12
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0.6 to 1.4
0 to 2.0
Sulfur (S), % 0
0 to 0.040
Tin (Sn), % 0.6 to 1.2
0
Residuals, % 0 to 0.15
0