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6023 Aluminum vs. ACI-ASTM CA6NM Steel

6023 aluminum belongs to the aluminum alloys classification, while ACI-ASTM CA6NM steel belongs to the iron alloys. There are 29 material properties with values for both materials. Properties with values for just one material (5, 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 CA6NM steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
200
Elongation at Break, % 11
17
Fatigue Strength, MPa 120 to 130
380
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 26
76
Tensile Strength: Ultimate (UTS), MPa 360
850
Tensile Strength: Yield (Proof), MPa 300 to 310
620

Thermal Properties

Latent Heat of Fusion, J/g 400
280
Maximum Temperature: Mechanical, °C 160
770
Melting Completion (Liquidus), °C 640
1450
Melting Onset (Solidus), °C 580
1400
Specific Heat Capacity, J/kg-K 890
480
Thermal Conductivity, W/m-K 170
25
Thermal Expansion, µm/m-K 23
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 45
2.8
Electrical Conductivity: Equal Weight (Specific), % IACS 140
3.2

Otherwise Unclassified Properties

Base Metal Price, % relative 11
10
Density, g/cm3 2.8
7.8
Embodied Carbon, kg CO2/kg material 8.3
2.5
Embodied Energy, MJ/kg 150
34
Embodied Water, L/kg 1180
110

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 38 to 39
130
Resilience: Unit (Modulus of Resilience), kJ/m3 670 to 690
1000
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 49
25
Strength to Weight: Axial, points 35 to 36
30
Strength to Weight: Bending, points 40
26
Thermal Diffusivity, mm2/s 67
6.7
Thermal Shock Resistance, points 16
31

Alloy Composition

Aluminum (Al), % 94 to 97.7
0
Bismuth (Bi), % 0.3 to 0.8
0
Carbon (C), % 0
0 to 0.060
Chromium (Cr), % 0
11.5 to 14
Copper (Cu), % 0.2 to 0.5
0
Iron (Fe), % 0 to 0.5
78.4 to 84.6
Magnesium (Mg), % 0.4 to 0.9
0
Manganese (Mn), % 0.2 to 0.6
0 to 1.0
Molybdenum (Mo), % 0
0.4 to 1.0
Nickel (Ni), % 0
3.5 to 4.5
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0.6 to 1.4
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Tin (Sn), % 0.6 to 1.2
0
Residuals, % 0 to 0.15
0